Electric Service Requirements - Chugach Electric Association

Transcription

Electric
Service
Requirements
CHUGACH PHONE DIRECTORY
Chugach Electric Main Number ------------------------------------------------------------------------ (907) 563-7494
Toll Free Number (Alaska only)--------------------------------------------------------------------------- (800) 478-7494
Fax ------------------------------------------------------------------------------------------------------------- (907) 562-0027
Street Address:
Mailing Address:
Telephone:
Hours:
5601 Electron Drive, Anchorage, AK 99518-5601
P.O. Box 196300, Anchorage, AK 99519-6300
(907) 563-7494
8:00 am. - 5:00 p.m., Monday through Friday
Member Services ------------------------------------------------------------------------------------------- (907) 563-7366
Residential and commercial connects, disconnects, new services, account information, billing and payment
options, capital credits, information, new applications and other member services.
Lobby Hours, 8:00 a.m. - 5:00 p.m., Monday – Friday
Business and Commercial Service Center---------------------------------------------------------------- (907) 762-7876
Member Services Fax --------------------------------------------------------------------------------------- (907) 762-4678
Credit and Collections:------------------------------------------------------------------------------------ (907) 563-5060
Engineering Services Division --------------------------------------------------------------------------- (907) 762-4625
Fax ------------------------------------------------------------------------------------------------------------- (907) 762-4693
Line Extension Coordination (for facilities requiring more than a service hook-up) -------- (907) 762-4631
Extension of new primary electric facilities to customer's property
Land Services ----------------------------------------------------------------------------------------------- (907) 762-4355
Easements, encroachments, plat review
Construction & Maintenance ---------------------------------------------------------------------------- (907) 762-7655
Electric facility clearance- information, meter base locations, repairs, relocates, removals or
upgrades,over-sized load moves, field disconnects, and damage done by Chugach crews.
Hours, 8:00 a.m. - 4:30 p.m., Monday - Friday
Outages ---------------------------------------------------------------------------During Working Hours (907) 762-7888
---------------------------------------------------------------------------------------- After Hours (800) 478-7494
Power Theft Hot Line ------------------------------------------------------------------------------------- (907) 762-4731
Danger Tree Hotline --------------------------------------------------------------------------------------- (907) 762-7227
24-Hour Voice Mail Message Box
Also see Chugach’s web site at “www.chugachelectric.com”
CALL FOR FREE UNDERGROUND LOCATION OF BURIED WIRES AND PIPES
Alaska Digline, Inc.
Anchorage Area ------------------------------------------------------------------------------------------------- 811
Statewide ---------------------------------------------------------------------------------------------------------- 811
The Alaska Digline will notify the following:
ACS Telecommunications
Alaska DOT/PF Anchorage St. Lights
Alaska Fiber Star
Alaska Native Medical Center
Alaska Railroad Corp.
Alyeska Cable Company
Anchorage School District
Anchorage Public Works Dept.
Anchorage Water & Wastewater
AT&T Alascom
Chugach Electric Association
City of Wasilla
ENSTAR Natural Gas
Eyecom, Inc.
GCI Communications
Homer Electric Association
Interior Telephone
Marathon Oil Company
Matanuska Electric Association
Matanuska Telephone Association
MFS Kanas (GCI)
Mukluk Telephone
Municipal Light & Power
Phillips Petroleum
Rogers Cable Systems
Signature Flight Support
Tesoro A.K. Pipeline
UNOCAL Oil & Gas
United Utilities, Inc.
Yukon Telephone, Inc.
Electric Service Standards &
Requirements
Effective 6/1/2011
Residential and Business
INFORMATION FOR USE BY
» CURRENT MEMBERS
» NEW MEMBERS
»ARCHITECTS
» ENGINEERS
» CONTRACTORS
»ELECTRICIANS
»SUPPLIERS
AND THOSE OTHERWISE ENGAGED IN THE PLANNING AND
CONSTRUCTION OF ELECTRIC SERVICE AND METER INSTALLATIONS
www.chugachelectric.com/customer/service_requirements.html
INTRODUCTION
The information in this Electric Service Requirements book is intended to
provide electrical contractors, architects, engineers, building contractors,
and other customers with the information needed to determine the
acceptable methods of receiving electrical service from Chugach Electric
Association Inc. (Chugach).
These requirements are based on Chugach’s operating Tariff, policies and
standards as well as National, State and Local Electrical Codes. Their use
is intended to promote a safe and efficient manner for receiving electrical
service and to ensure that all our customers are treated fairly and
consistently. It is the responsibility of the customer to conform to
Chugach’s requirements as well as applicable National, State and Local
Electrical Codes.
This edition of the Electric Service Requirements book supersedes all
previous editions and revisions. At Chugach, we will do our best to meet
your needs for electrical service in an economical and acceptable manner.
Please contact us if you have any questions regarding the requirements in
this book.
Electric Service Requirements
Page i
Table of Contents
TABLE OF CONTENTS
Chugach Phone Directory .......................................................................................... Inside Front Cover
Introduction...............................................................................................................................................i
SECTION 100 - GENERAL INFORMATION.....................................................................................1
101
Purpose .................................................................................................................................... 1
102
Change in Requirements........................................................................................................ 1
103
Chugach Service Area ............................................................................................................ 1
104
Codes and Ordinances ........................................................................................................... 1
105
Membership ............................................................................................................................ 2
106
Disconnection .......................................................................................................................... 2
107
Complaints .............................................................................................................................. 3
SECTION 200 - SERVICE .....................................................................................................................5
201
Character of Service............................................................................................................... 5
202
Types of Service ..................................................................................................................... 5
203
Application for Service........................................................................................................... 6
204
Application for a Line Extension .......................................................................................... 6
205
Electric Service Extensions to Permanent Facilities............................................................ 8
206
Electric Service Extensions to Temporary Facilities........................................................... 9
207
Easements.............................................................................................................................. 10
208
Customer Facilities............................................................................................................... 10
209
Service Conductor Connection............................................................................................ 12
210
Service Facilities on Customer's Premises ......................................................................... 12
211
Undesirable Service Characteristics ................................................................................... 13
212
Electrical Generators ........................................................................................................... 14
213
Customers Sub-Metering Resale of Electricity.................................................................. 15
214
Load Centers......................................................................................................................... 15
215
Work Requirements in Proximity to Chugach Facilities.................................................. 16
216
Modifications to Services and/or Facilities......................................................................... 16
217
Net Metering Generation ..................................................................................................... 17
SECTION 300 - METERING STANDARDS......................................................................................19
301
Scope ...................................................................................................................................... 19
302
Metering and Service Equipment Location ....................................................................... 19
303
Metering and Service Equipment General Requirements................................................ 22
304
Grounding and Bonding Requirements ............................................................................. 24
Electric Services Requirements
Page ii
Table of Contents
305
Sealing and Locking Requirements .................................................................................... 25
306
Service and Meter Disconnect Requirements .................................................................... 26
307
Self-Contained Metering Requirements............................................................................. 28
308
Multiple Metering Requirements........................................................................................ 30
309
CT Rated Metering Requirements...................................................................................... 33
310
Switchboard Service Equipment Requirements ................................................................ 36
311
High Voltage (Primary) Metering....................................................................................... 38
312
Load Control and Pulse Metering....................................................................................... 38
313
Meter Testing ........................................................................................................................ 39
314
Fire Pump and Fire Pump Equipment ............................................................................... 39
315
Unusual Conditions .............................................................................................................. 40
SECTION 400 - INSPECTIONS ..........................................................................................................41
401
General Information ............................................................................................................ 41
402
Electric Service Inspection Requirements.......................................................................... 41
403
How And When To Call For Inspection............................................................................. 43
SECTION 500 - SERVICE STANDARDS, EQUIPMENT SPECIFICATIONS AND GUIDES...45
SS-1
Self-Contained Meter Sockets, 100 to 200 Amps ............................................................... 47
SS-2
Current Transformer Meter Sockets Above 200 Amps.................................................... 48
Steps to Follow to Obtain Permanent Service -- 200 Amps or Less.............................................. 49
SS-3A Overhead Permanent Service 200 Amps or Less, Periscope Mount................................ 50
SS-3B Overhead Permanent Service 200 Amps or Less, Gable Mount ...................................... 52
SS-4
Overhead Service for Temporary Service and for Trailers, 200 Amps or Less ............. 54
SS-5
Temporary Underground Service....................................................................................... 56
SS-6
Permanent Underground Service, 200 Amps..................................................................... 58
SS-7
Underground Service Remote and Trailers, 200 Amps or Less ....................................... 60
SS-8
Underground Service (6 Units or Less) .............................................................................. 62
SS-8A Underground Service (6 Units or Less), Option for Non-Residential.............................. 64
SS-9
Underground Service (More Than 6 Units), up to 800 Amps (single-phase) .................. 67
SS-10 Single-Phase 201-800 Amps, Three-Phase 201-800 Amps ................................................ 68
SS-11 Three-Phase Underground Service 801 to 1200 Amps...................................................... 70
SS-12 Three-Phase Underground Service 1201 to 2000 Amps.................................................... 72
SS-13 Three-Phase Underground Service up to 4000 Amps ....................................................... 74
SS-13A Three Phase - Underground Service 2001 - 2500 Amps.................................................... 76
SS-14 Underground Service to Load Centers, 200 Amps or Less............................................... 78
SS-15 Overhead Service for Load Centers, 200 Amps or Less ................................................... 80
Page iii
Table of Contents
SE-1
Residential Multi-Metering - 6 Meter Maximum .............................................................. 82
SE-2
Wall-Mounted Pull Box With Terminal Bus ..................................................................... 84
SE-3
Combination Disconnect And Terminal Bus ..................................................................... 86
SE-4
Terminal Bus Details............................................................................................................ 88
SE-5
Service Equipment Switchboard Style 201-4000 Amps .................................................... 90
SE-6
Service Equipment Switchboard – Self-Contained ........................................................... 92
SE-7
Switchboard – CT Metered ................................................................................................. 94
SE-8
Commercial Load Center - Padmounted ........................................................................... 96
SG-1
Typical Arrangement for Standby Generators, Alternatives 1 and 2 ............................. 98
SG-2
Combination Service - CT and Self-Contained Metering............................................... 100
SG-3
Service Guide Padmount Transformer Clearance .......................................................... 102
SG-4
Metering And Service Entrance Equipment – Working Space And Clearance ........... 104
SG-5
Clearance For Residential Multiple Metering ................................................................. 106
SG-6
Clearance For Switchboard Metering – Interior Mount ................................................ 108
SG-7
Conduit Guide..................................................................................................................... 110
SG-8
Pulse Metering Installation................................................................................................ 112
Appendix...............................................................................................................................................113
Glossary ................................................................................................................................................115
Index......................................................................................................................................................121
Line Extension Application.................................................................................................................125
Page iv
Section 100 - General Information
SECTION 100 - GENERAL INFORMATION
101
Purpose
The purpose of this booklet is to inform consumers, consultants and contractors of the
requirements for obtaining service from Chugach. Before purchasing equipment for a proposed
installation or beginning construction, a customer and/or their representative should contact
Chugach to learn the general requirements for obtaining service in the most economical and
feasible way.
This booklet is not intended to ensure adequacy and safety of the customer's own wiring and
equipment. This responsibility remains with the customer. Also, Chugach does not perform the
function of inspecting the customer’s internal wiring for compliance with requirements of
electrical codes or regulations established by governing agencies. This function is within the
jurisdiction of municipal and other governmental authorities.
102
Changes in Requirements
Some of the information contained in this booklet is based on various codes and ordinances that
are subject to change. As a result, portions of this booklet may not always be current. Chugach
should be consulted in case of doubt on the applicability of any item.
103
Chugach Service Area
Chugach provides electric service to all residents within its service area in accordance with its
Operating Tariff (Tariff) which is approved by the Regulatory Commission of Alaska (RCA).
See the service territory map on the back pages of this booklet.
104
Codes and Ordinances
Construction of new or remodeled installations must conform to current and applicable
provisions of the National Electrical Code; the National Electrical Safety Code; federal and state
regulations; municipal codes, regulations and ordinances; the Chugach Tariff; and Chugach’s
Electric Service Standards and Requirements. Chugach personnel are not authorized at any time
to waive federal, state or municipal regulations.
Where there is a conflict between Chugach's Tariff and this booklet, the Tariff shall take
precedence. Codes, ordinances and regulations are available from several sources. Copies of
specific pages from Chugach's Tariff are available by contacting Chugach's General Counsel’s
Office at 762-4790. The Chugach Tariff is also available online at www.chugachelectric.com
Information and/or questions about the National Electrical Code should be directed to the
Municipality of Anchorage, Development Services, Building Safety Plan Review Engineer or to
the Lead Electrical Inspector.
Page 1
105
Membership
Chugach is an incorporated, non-profit electric cooperative, and membership therein is a
condition of receiving electric service. Membership is available upon application to individuals,
a husband and wife jointly, a partnership, an association, a public or private corporation, or a
governmental organization. A non-refundable $5.00 membership fee and $20.00 service
connection fee is payable at the time of application. Other fees may be required, such as meter
deposit fees, which may vary based on electric usage or credit worthiness. Membership in
Chugach is non-transferable.
106
Disconnection
Chugach may disconnect/discontinue service with the Member for the following reasons:

When requested by the Member in person, writing or by phone.
Without notice to the Member:

When an immediate hazard exists that threatens the safety or health of the Member,
general population, or Chugach's personnel or facilities.

When Chugach has evidence of meter tampering or fraud by the Member.

When a member has failed to comply with the curtailment procedures imposed by
Chugach during emergency supply shortages.
With notice to the Member:

Failure of the member to pay a delinquent account within 55 days after the initial
rendering of the bill unless the member has entered into a deferred payment
agreement.

Failure of the member to meet or maintain Chugach’s deposit requirements, unless
the member has entered into a deferred deposit payment agreement.

Knowing and continued failure of the member to provide Chugach with reasonable
access to its meter, equipment, or property.

Member breach of a special contract between Chugach and member for electric
service.

Necessity of Chugach to comply with an order of any governmental agency with
proper jurisdiction.

Where there is any installation which, in the opinion of Chugach, is injurious to the
operation of Chugach’s system or its service to other members.
Page 2
107

Continued use of temporary service for longer than 12 months, unless Chugach has
approved a time extension or an application has been made for permanent service.

The customer’s operation of utilizing equipment is used in a manner that is
detrimental to the service of Chugach or its other customers.
Service Complaints
Customers may file complaints with Chugach concerning the adequacy of electric service
provided or if they believe the utility has failed to comply with the rules and regulations of the
Tariff. Complaints should be directed to the attention of the Chief Executive Officer, Chugach
Electric Assoc., Inc., PO Box 196300, Anchorage, AK 99519. Upon receipt of a complaint,
Chugach will investigate and respond to the customer in writing within 10 working days.
Complaints that are not resolved to the satisfaction of the customer may be presented to the RCA
for review. RCA may be contacted at 701 W. 8th Avenue, Suite 300, Anchorage, AK 99501, or
by phone at 276-6222.
Page 3
Page 4
Section 200 - Service
SECTION 200 - SERVICE
201
Character of Service
Electric service is available at alternating current, 60-hertz, single-phase or three-phase, from an
overhead or underground distribution line at one of the nominal American National Standards
Institute (ANSI) standard voltages as given below. If three-phase service is required where
single-phase is available, the customer shall pay the cost of providing three-phase service. In
addition, the customer may be required to receive underground service as required by Title 21.90
of the Anchorage Municipal Code, "Underground Ordinance." Chugach can assist the customer
in making this determination. Within the Municipal underground surcharge area new residential
secondary services shall be installed underground.
202
Types of Service
Voltages available to Chugach customers are listed below.
Secondary Voltages
Single-phase, 120/240 volt, 3-wire
Single-phase, 240/480 volt, 3-wire
Three-phase, 120/208 volt, 4-wire, grounded-wye
Three-phase, 277/480 volt, 4-wire, grounded-wye
Three-phase, 2,400/4,160 volt, 4-wire, grounded-wye
Note: Network metering is only available with prior approval from Chugach.
Primary Voltages
Primary voltage is the highest voltage the Chugach distribution system has available for electric
service before transformation to a secondary delivery or utilization voltage. Delivery will be
made at standard available primary voltage that is available in the applicable service area.
Primary metered service normally will not be available unless the customer requires primary
voltage from the distribution system and obtains Chugach’s approval prior to facility
construction.
Note: All nominal voltages listed may not be available at all locations or for all loads. Contact
Chugach to determine voltage availability and service entrance limitations prior to purchasing
equipment. Single-phase 240/480 volt is available for non-residential installations only.
Page 5
203
Application for Service
To obtain electric service from Chugach, contact the Member Services Department at 563-7366
to establish a member account for service. If the customer is not already a Chugach member, an
application will need to be completed. Chugach-approved service equipment, inspected and
approved by the Municipality of Anchorage or the State of Alaska, as applicable, must be
provided by the customer. If Chugach does not have a power source immediately adjacent to the
customer’s property, a line extension may be required. In some cases, existing Chugach facilities
may not be adequate and an upgrade will be required.
204
Application for a Line Extension
A line extension is the extension of primary electric facilities to the customer's property,
subdivision or commercial building. For additional clarification, contact Chugach at 762-4631.
An application for a line extension should be made as far in advance as possible.
Customers should contact Chugach for information for the estimated cost of extending electrical
facilities. Chugach may ask for a site plan of the customer's property and a deposit to begin the
review and design process for extending the electrical facilities. Chugach's Tariff will be
discussed with the customer as to the amount that Chugach contributes and the cost the customer
pays for the line extension.
Application. Customer applications are available by fax by calling 762-4631 or by coming to the
Chugach office at 5601 Electron Drive. A sample copy can also be found at the end of this
booklet. Submittal of a completed application and deposit to Chugach initiates the process.
Deposits are $100 per residential meter and $300 per commercial meter. A designer will be
assigned to the customer's project. Both the line extension coordinator and the designer will be in
contact with the customer throughout the process. A work order number is also assigned for
tracking purposes. Any drawings, electric load requirements, or permits the customer has for the
project should be provided to Chugach at this time. Revised drawings should be provided to
Chugach as soon as they become available.
Preliminary Design. A preliminary design and cost estimate is prepared for the customer’s
review. Chugach will explain how the costs are apportioned between Chugach and the customer.
Chugach will deduct specific costs from the total cost and certain credits will be applied against
the cost of the project on behalf of the customer in accordance with Chugach's Line Extension
Tariff, Rule 8. The customer is required to sign both a preliminary cost estimate and an
acknowledgment that the preliminary design meets the customer’s requirements before the
project can proceed.
Easement/Permit Review. After the customer signs the preliminary design and cost estimate, the
project will be forwarded to Chugach's Land Services Department. Land Services will review the
project design and proposed route to determine if easements are available or will need to be
obtained, and what permits, if any, will be needed. Applicants are required to clear easements on
their property to the specifications for secondary service furnished by Chugach.
Page 6
Final Design. The designer will prepare a final design based on the report received from Land
Services. Easements and permits are obtained at this time. After the completion of the design,
engineering, right-of-way, and permit acquisition the applicant must provide written
authorization to Chugach to proceed. Chugach will schedule construction at its discretion by
independent contractors or by Chugach’s employees as set forth below.
Bid Process. Projects under $40,000 (based on the estimated contractor labor and contractor
supplied material cost) utilize a unit price task order contract and no bid is required. Projects
over $40,000 are normally sent to bid every Tuesday to Chugach's approved contractors. Bids
are generally received back the following Tuesday. The customer needs to have the property at
final grade and the easements free from obstructions (i.e., gravel, debris, old cars, etc.) prior to
the start of construction.
Agreement Process & Payment. After bids are received a Line Extension Agreement is
finalized for customer's signature. Payment plans are available for single lot, residential line
extensions only. The project will be released for construction when the Agreement has been
signed and the customer has paid any monies due.
Applying for Service. Before the project is complete the customer will need to contact
Chugach's Member Services Department at 563-7366 to establish a member account for service.
If the customer is not already a Chugach member, an application will need to be completed.
Chugach-approved service equipment, inspected and approved by the Municipality of Anchorage
or the State of Alaska, as applicable, must be provided by the customer. All service entrance
equipment shall conform to Chugach’s Electric Service Standards and Requirements.
Note 1. Line extensions involve construction of poles and overhead lines or installation of
trench and cables and other facilities to bring power to the customer's property, subdivision or
commercial building. A secondary service connection links the meter in the customer's new
house, apartment or business to the power line.
Note 2. The length of time it will take Chugach to design, bid and construct the customer's
project will depend on, but is not limited to, the following: type of the line extension (singlephase, three-phase, residential, commercial), size of the extension, availability of easements and
permits, time of year, changes to building design by the customer, execution of a Line Extension
Agreement (signed contract), and receipt by Chugach of any monies due from the customer.
Note 3. If the customer’s project plans change at any time, it may have an impact on Chugach's
design and subsequent construction schedule. The customer should notify Chugach immediately.
Redesign by Chugach may be required and the customer may incur a redesign fee. Changes to
design can impact the time it takes to complete the customer's line extension. If the customer
requires a project to be re-bid, an additional charge will be incurred.
Note 4. Certain parts of the Chugach service area have mandatory undergrounding
requirements. Applicants wishing to seek waivers of this requirement are responsible for
initiating the waiver process with the governing agency as well as any follow-up and
appearances before boards and commissions.
Page 7
Customer Construction: A customer may choose to hire an engineer to design and a contractor
to construct a new line extension under the conditions described in the Chugach Tariff, Section
8.9. A licensed Alaska-registered electrical engineer must perform the design. A licensed Alaska
electrical contractor must perform the construction. The contractor must employ a licensed
Alaska electrical administrator (unlimited line work category). Contractor installation personnel
must possess valid Alaska certificates of fitness. For specific requirements, please contact
Chugach.
205
Electric Service Extensions to Permanent Facilities
1.
Chugach will extend up to 100 feet (or to the nearest service point on the structure,
whichever is less) of secondary conductor to the customer’s service entrance location
provided that Chugach’s facilities are of proper capacity to serve the customer’s needs.
The customer shall pay all costs for pavement cutting, removal and repair related to the
service extension.
2.
If upgrades to the Chugach system become necessary, Chugach may require the customer
to pay for such upgrades based upon the line extension requirements (see Section 204).
3.
If an application for underground service is received after the first day of September and
before thaw the following year, frozen ground may necessitate that the underground
service must be installed either by steam thawing or temporarily placed above ground.
When underground service is installed temporarily above ground, it shall be installed in
corflo or electrical non-metallic tubing. Only secondary service conductors (not
exceeding 480-volt) may be temporarily installed above ground. Chugach will not install
corflo across roadways, driveways, or other locations including easements open to
vehicles or equipment where it may be subject to damage. The customer shall pay all
related costs.
4.
The customer will receive underground secondary service where Chugach facilities are
underground. Where Chugach facilities are overhead, the customer may receive either
overhead or underground service, subject to the Underground Ordinance, Title 21.90 of
the Anchorage Municipal Code. All new secondary residential service requires
underground service within the Municipality of Anchorage underground surcharge area.
5.
For customers requiring single-phase service up to 200 amps, Chugach will extend up to
100 feet (or the nearest point of service, whichever is shorter) of secondary service line,
either overhead or underground, to a building at no charge provided Chugach's facilities
are of proper capacity to serve the customer's needs and provided the installation is
consistent with the National Electrical Safety Code and Chugach’s requirements for the
shortest direct route from the meter base to the Chugach pedestal or pole. The customer
shall pay all costs for pavement cutting, removal, and repair related to the service
extension. The customer may only receive underground secondary service when an area
has underground facilities, or either overhead or underground secondary service from
overhead facilities (outside of the area subject to the Municipality of Anchorage
Underground Ordinance (Title 21.90)). All new secondary residential services require
underground service within the Municipality of Anchorage underground surcharge area.
Page 8
The customer will be responsible for the additional cost listed in Chugach's tariff for
secondary service in excess of 100 feet (or the nearest point of service, whichever is
shorter). All services greater than 300 feet require Engineering review and approval.
a. For customers requiring service above 200 amps, Chugach may require a primary line
extension and the installation of a transformer. The customer will be responsible prior
to construction for any additional costs.
b. Placement of the customer’s meter base at any location on the residential structure,
other than within 3 feet from the corner of the structure that is closest to the
appropriate power source designated by Chugach, requires prior approval by
Chugach.
c. For extension of secondary service to a building, Chugach will require the customer
to clear a 10-foot wide path on the property to be served from the power source to the
meter base following the most direct route. The route must be clear of all trees,
shrubs, brush, stumps, debris, building materials, etc. For underground services the
slope of the route must be no more than 3:1 for inline installations and no more than
4:1 where the trench traverses the slope. If these slope conditions cannot be met,
Chugach must either approve the route in advance (based on specific site conditions)
or an alternative meter and service entrance equipment location will be required. In
all cases where an exception is made to install a trench in a steeper slope, the
customer accepts responsibility for restoration and maintenance of the trench to
control possible erosion. Chugach will backfill the trench in accordance with standard
practices.
d. For customers requiring three-phase service, Chugach may require a primary line
extension and/or installation of a transformer. The customer will be responsible prior
to construction for any additional charges. Customers are advised to contact Chugach
to determine if facilities are of the proper type and capacity to provide service.
e. Residential customers who select a remote meter base service installation require
prior approval by Chugach of a location outside of the utility easement and on the
customer’s property close to the service alignment based on a typical structure
mounted meter location (refer to SS-6). A permanent sign (8” x 5” minimum) shall be
attached to the residence at the typical structure mounted meter location six feet
above final grade that provides the following information “REMOTE METER
DISCONNECT located 00 ft south/north and 00 ft east/west”. The installer shall
substitute the relevant distances and bearings (accurate to within five feet). The
background color for the sign shall provide sufficient contrast with the siding color to
be recognizable at a distance of ten feet in daylight and the lettering legible at three
feet. Refer to 307.15 and 307.16 for additional signage requirements.
206
1.
Electric Service Extensions to Temporary Facilities
Chugach will extend temporary service to the customer’s service entrance equipment at a
location designated by Chugach, provided that Chugach’s facilities are of the proper
Page 9
capacity to serve the customer’s needs. The customer shall make arrangements to pay
Chugach for the installation and removal cost, including material, labor, equipment and
indirect overhead, less the salvage value of materials that are returned to stock prior to
service construction by Chugach. Temporary service is allowed for a period of up to one
year for the purpose of construction and shall be converted to permanent service upon
completion of construction.
2.
If an application for temporary underground service is received after the first day of
September and before thaw the following year, frozen ground may necessitate that the
underground service must be installed either by steam thawing or temporarily placed
above ground. When underground service is installed temporarily above ground, it shall
be installed in corflo or electrical non-metallic tubing. Only secondary service conductors
(not exceeding 240-volt) may be temporarily installed above ground for temporary
facilities (480-volt requires thawing and trenching unless the temporary service is located
within a fenced, controlled access area). Chugach will not install corflo across roadways,
driveways, or other locations including easements open to vehicles or equipment where it
may be subject to damage. The customer shall pay all related costs.
3.
The customer will receive temporary underground secondary service where Chugach
facilities are underground. Where Chugach facilities are overhead, the customer may
receive either overhead or underground temporary service (see optional overhead
configuration in SS-4), subject to the Underground Ordinance, Title 21.90 of the
Anchorage Municipal Code. For service areas outside of the Municipality of Anchorage,
the customer will receive temporary overhead service where facilities are overhead.
207
Easements
Easement definition: An easement is an interest in land of another for a specific purpose. In the
case of an electric utility such as Chugach, it includes the right of access over the easement area,
the right to cut down or trim any part of trees within the easement, the right to remove any
obstructions within the easement area that interfere with construction or maintenance activities.
No permanent structure will be allowed within the easement. Pavement, fences, shrubbery and
gardens may occupy the easement area but only at the property owner's risk.
Chugach will construct, own, operate and maintain facilities only on public or private property
across which easements or rights-of-way, satisfactory to Chugach, may be obtained without cost
to Chugach or within the public streets, roads or highways in which it has legal rights to occupy
without future relocation liability. All applicants for service must provide Chugach with all
easements or rights-of- way required for any portion of the line extension that is on the premises
owned, leased or otherwise controlled by the applicant as may be necessary to provide services
to the applicant or as may be reasonably required to provide service to adjacent properties.
208
1.
Customer Facilities
Before any service entrance is installed on any building or substantial changes made in
any existing service, the customer, builder or authorized representative shall obtain
Page 10
approval from Chugach as to where the service entrance and meter shall be located. Refer
to Section 302 for specific requirements.
2.
Chugach shall require the customer to clear a 10-foot wide path on the property to be
served from the power source to the meter base following the most direct route. The route
must be clear of all trees, shrubs, brush, stumps and debris. For underground services the
slope of the route must be no more than 3:1 for inline installations and no more than 4:1
where the trench traverses the slope. Where these slope conditions are not met, Chugach
must either approve the route in advance (based on specific site conditions) or an
alternative meter and service entrance equipment location is required. In all cases where
an exception is made to install a trench in a steeper slope, the customer accepts
responsibility for restoration and maintenance of the trench to control possible erosion.
Chugach will backfill the trench in accordance with standard practices.
3.
The customer’s premises shall be at +/- 6 inches from final grade prior to Chugach’s
installation of underground cable, conduit, meter(s), or other related equipment.
4.
The customer shall install and maintain all wiring equipment beyond the point of delivery
including meter sockets, disconnect devices, circuit protection devices, CT cabinets, CT
mounting bases, wall-mounted pull boxes with terminating facilities, and any similar or
related electrical enclosures. Chugach shall provide all kilowatt-hour meters, CT’s,
transformer-rated test switches and associated wiring. The point of delivery, unless
otherwise specified, is that location on the exterior of the customer's building or structure
where Chugach's system and the customer's facilities are interconnected.
5.
The customer's wiring, meter base, and service entrance facilities shall be installed and
maintained by the customer in conformity with applicable municipal or state
requirements, current standards required by the National Electrical Safety Code, the
National Electrical Code, Chugach's Electric Service Standards and Requirements and
Tariff. Service entrance conduit sizing shall be coordinated with and approved by
Chugach prior to installation. Refer to Service Guide SG-7 for conduit details.
6.
An affidavit or certificate of inspection is required by Alaska statute and must be
furnished before service is connected. Chugach may disconnect, refuse to connect or
reconnect service when a customer's wiring of facilities is found to be non-compliant
with the applicable codes, ordinances and requirements. Refer to Section 400 for specific
details on inspections.
7.
Chugach shall not install meters in any unsafe location such as along stairways, above
window wells and under inclined roofs subject to sliding ice. Carport, porch or patio
areas shall be avoided due to possible future enclosure of such areas, resulting in
inconvenience to the customer when it becomes necessary to move the meter location to
enable Chugach to read, inspect or test the meter.
8.
The customer is responsible for providing suitable protective devices for the equipment
on the customer’s premises. Customers shall protect their equipment from potentially
Page 11
harmful conditions, including but not limited to, single-phase operation of equipment
requiring three-phase service or under and over-voltage conditions.
9.
209
The customer is responsible for providing locations of existing or proposed private (nonutility) subsurface facilities, including but not limited to, storm drain, septic, heated
driveway/sidewalk, lighting circuits etc. This information will be used to resolve conflicts
with Chugach facilities and equipment.
Service Conductor Connection
The customer’s electrical contractor on all commercial services shall make the secondary
connections on the “load side” of the switchgear or bus (meter socket lugs for self-contained
applications). Line side connection terminals are reserved for Chugach’s use. Chugach will
trench and install secondary service conductor between the service entrance and the transformer,
pole or pedestal, but the secondary service conductor will remain de-energized until the
customer's electrical contractor has completed the connections and has passed an electrical
inspection (MOA Building Safety within the Municipality of Anchorage or State of Alaska
(commercial only) or Chugach for all service area outside of the Municipality of Anchorage). All
other service connections will be made and/or terminated by Chugach and/or its representative. If
electrical service must be disconnected for any reason, the customer must contact Chugach.
210
Service Facilities on Customer's Premises
1.
All facilities furnished by Chugach on the customer's premises shall remain the property
of Chugach and may be removed, replaced or updated by Chugach at any time. The
customer shall provide space for and exercise care to protect Chugach's property located
on the customer's premises. In addition, the customer shall not break Chugach's
equipment seals. The customer shall be liable for loss or damage to Chugach’s property
arising from neglect, carelessness, vandalism, improper protection from ice, snow and
water, or misuse by the customer or any other person on the customer's property.
2.
Tampering with meters is prohibited by Chugach and is a civil offense under Alaska Law
(AS 42.20.030 and AS 42.20.032). Any tampering, breaking of meter seals, opening or
damaging of Chugach's locks, interference, or work performed upon meter installations
or other property of Chugach is prohibited. Chugach may, at any time and without notice,
discontinue supply of service to the customer and remove the meter(s) and equipment in
the event of such tampering or interference. The customer shall be responsible for
payment of all costs that result from such tampering or interference with Chugach's
property. Those costs may include, but are not limited to, disconnection and reconnection
charges, a tampering fee under Chugach’s current tariff, investigation-related costs, repair
costs associated with damage to Chugach's property, and payment for electricity
consumed but not metered. Service will not be restored to such customer until payment
has been made to Chugach for all costs and all repairs to customer’s equipment have been
completed.
3.
On underground service installations requiring padmounted equipment (or any other
above-grade equipment such as secondary pedestals), the customer is required to furnish
Page 12
an accessible and safe location for the padmounted equipment on the customer's property.
Chugach must approve all padmounted equipment site locations. Chugach will not install
padmounted equipment on property other than that of the customer's (i.e., in a street or
alley right-of-way, or on adjacent property) unless providing service to residential loads
or load centers). There should be a minimum clearance from trees, shrubs and building
walls of 10 feet in front of the padmounted equipment and 6 feet on each of the other
sides (The 6 foot dimension may be reduced to 3 feet for non-combustible structures,
fences and shrubs). Clearance above the padmounted equipment should be sufficient to
provide crane clearance for installation and replacement. Where required, the customer
shall install, at his expense, suitable protective or security devices designated by Chugach
on the customer’s premises.
4.
Refer to Service Guide SG-3 for non-residential padmounted transformer clearance
requirements, when located adjacent to non-utility structures and for the maximum length
of three-phase underground services.
5.
Properly identified employees of Chugach shall have access to customer premises at all
reasonable times for the purpose of reading meters, testing or inspecting the customer's
load and equipment, or installing, repairing, removing or exchanging equipment
belonging to Chugach. The customer shall not erect or have any device, building, fence,
shrubs, trees, etc., that would impede utility access to Chugach’s equipment.
211
1.
Undesirable Service Characteristics
Chugach may refuse or discontinue service to a customer’s installation if the customer’s
installation has load characteristics that may cause excessive voltage fluctuations,
impairment of service, or damage to facilities of Chugach or other customers.
Undesirable load characteristics include, but are not limited to, 20% unbalanced load
between phases, a power factor below 90%, or cyclical demand fluctuations produced by
the customer's equipment. If a customer with a measured demand of 50 kW or more has
an average power factor less than 90% lagging, the monthly demand factor shall be
increased by 1% for each 1% that the power factor is below 90% lagging. As a condition
of service, Chugach may require that customers install at their own expense equipment
that will eliminate the undesirable load characteristics.
Single-phase motors must be no larger than 10 hp; three-phase motors no larger than 25
hp. Chugach may allow the installation of larger motors after studying and determining
the effects of larger motors on the system at its proposed location. Chugach may require
the customer to use reduced-voltage starters or other types of control systems to mitigate
the effects of the equipment operation on other customers. The maximum horsepower of
all motors that a customer can have running at any one time on a single-phase line on one
service is 40 hp.
2.
Devices that can produce harmonic distortion (such as adjustable speed/frequency drives,
electronic ballasts for fluorescent lighting, and switching power supplies for computers
and electric vehicles) shall be filtered such that the harmonic distortion resulting from
these devices is kept within the limits specified in the most recent revision to IEEE 519,
Page 13
Section 10. Compliance with this requirement is by Chugach’s measurement at the point
of change of ownership between Chugach and the customer, otherwise known as “the
point of delivery.”
212
Electrical Generators
1.
Connections to other Systems: Chugach will deny service to or disconnect its service
from any premise or facility that is connected to another electrical system other than the
customer’s stand-by electrical system that is connected through a transfer switch that is
approved by Chugach. A “stand-by electrical system” is an electrical system that is used
to supply electricity to a customer’s premise when utility service is not available. The
transfer switch must be of a design that will ensure that backfeed into Chugach’s
electrical system will be prevented. Chugach shall make the sole determination as to
whether or not a stand-by electrical system installation meets Chugach’s requirements
and provides an appropriate level of protection against backfeed into its electrical system.
2.
Manual Transfer Switches (Open Transition): Manual transfer switches shall be of the
double-throw, open-transition type. Key type interlock systems employing key cylinders,
locking bolts, and ratcheting or pivoting plates that attempt to externally connect two
independent circuit breakers in a break-before-make scheme are not approved.
3.
Automatic Transfer Switches (Open Transition): Automatic transfer switches shall be the
open transition type except as noted below (212.5). Automatic transfer switches must
provide for manual transfer of customer load. Automatic transfer switches shall have both
mechanical and electrical interlocks to prevent parallel operation of the customer’s standby electrical system with Chugach’s electrical system.
4.
Modifying or Overriding Transfer Switches (Open Transition): Chugach will deny
service to or disconnect its service from any premise or facility with a stand-by electrical
system that is found to have any modifications to a transfer switch, unless Chugach has
approved such modifications in writing.
5.
Parallel Operation (Closed Transition) Transfer Switches: Stand-by electrical systems
intended for momentary (not exceeding 100 milliseconds) parallel operation (closed
transition) shall not be installed without prior written approval from Chugach. The
system shall not be connected until Chugach has inspected and signed off on testing of
the closed transition transfer switch and stand-by electrical system. Momentary parallel
operation shall be allowed only for maintenance and testing of stand-by emergency
electrical systems and must be scheduled with and approved in advance in writing by
Chugach.
6.
Transfer Switch Approval: Transfer switches, both open transition and closed transition,
for use with stand-by electrical systems shall be approved by Chugach prior to
installation. The applicant shall provide a one-line electrical diagram of the proposed
installation showing the normal source (utility power), the alternate source (stand-by
emergency power), and an accurate depiction of the transfer switch employed. Chugach
also requires the generator’s specific ratings and capacities, the transfer switch’s specific
ratings and capacities, and a detailed description of transfer switch operation. (If the
Page 14
transfer switch is intended for parallel operation (closed transition type), the applicant
shall also provide specifications of all interconnecting equipment including circuit
protection (protective relays), instrumentation, measurement, and control equipment.)
7.
Prohibited Transfer Equipment: Meter socket adapter transfer devices are prohibited for
use on Chugach’s system.
8.
Interconnected Generation: A customer may operate an electric generator in parallel
with Chugach, provided they have executed an “Interconnection Agreement” with
Chugach. Copies of the Chugach “Interconnection Guidelines for Non-Utility
Generation” including the application forms are available upon request from Chugach
Engineering or on-line under the Chugach Tariff. Refer to Section 217 for net-metering
generation requirements.
213
Customers Sub-Metering Resale of Electricity
1. A customer shall not sell any of the electric energy furnished by Chugach unless the
customer holds a valid certificate of public convenience and necessity issued by the
Regulatory Commission of Alaska for retail distribution of electric energy and the
customer has executed a contract with Chugach, or is accepting service under a schedule,
which specifically authorizes the sale of electricity.
2. Customer sub-metering for the purposes of apportioning costs between two or more units
in a master-metered premises is not the resale of electricity.
3. Chugach will consider accepting conversion of customer sub-metering equipment to a
utility point of delivery configuration only if the equipment meets all of the applicable
Chugach requirements and specifications for multiple metering.
214
Load Centers
Load centers are used to control signal lights, streetlights, thaw wires, pump stations, etc. Load
centers are generally placed in road rights-of-way or “agency” easements. Contact the State of
Alaska, Department of Transportation & Public Facilities, the Municipality of Anchorage Public
Works Department, or the appropriate agency for approval to utilize the right-of-way. Customer
owned facilities may not be installed within a telephone and/or electric easement without
permission from Chugach, ACS, GCI and the affected property owner.
Load centers are to be located no more than 15 feet from an approved power source and must be
pre-approved in writing by Chugach. Load centers with an enclosed meter socket require a
hinged cover (Municipality of Anchorage Type 3) or a safety socket (see SE-8). All 480-volt
load centers require a safety socket. Load centers are to be constructed in accordance with
Chugach’s Service Standard SS-14, Underground Service to Load Centers 200 Amps or less, or
SS-15, Overhead Service for Load Centers 200 Amps or less, located in Section 500 of this
booklet.
Page 15
215
Work Requirements In Proximity to Chugach Facilities
All work on or in the immediate vicinity of Chugach’s facilities, such as backfilling, temporary
support, shoring, and relocations are subject to prior approval and inspection by Chugach.
Each year, copies of the Chugach “Electrical Facility Clearance Requirements” policy are mailed
out to various companies and agencies whose activities may bring their personnel or equipment
in close proximity to electrical facilities. Chugach distributes copies of this policy in an effort to
help minimize and identify potential hazards for construction personnel and the general public.
In addition, Chugach is concerned with preventing possible damage to its electrical facilities and
disruption of electrical service to customers.
Any questions or approvals involving these facility clearance requirements should be addressed
to Chugach. For copies of Chugach’s current policy for construction or maintenance near
electrical facilities, please call 762-7655. Copies are available online at
www.chugachelectric.com (select Customer Service then For Your Home or For Your Business
and, finally, select Special Services).
216
Modifications to Services and/or Facilities
If it is necessary to retire or relocate services, distribution facilities (including Chugach-owned
transformers or pedestals located on or adjacent to customer's premises), yard lighting or street
lighting for the convenience of the customer, such relocations will be performed by Chugach at
the expense of the customer. The customer shall pay the cost (material, labor, equipment and
overhead) of constructing and installing the new facilities plus the cost of removing the replaced
facilities less the salvage value of the relocated facilities as determined by Chugach. A
modification of existing facilities will not be considered "operationally feasible" if the purpose is
to move the facilities, or any part thereof, to the premises of another customer unless that
customer agrees in writing to such modification.
Chugach provides the following services and/or modifications to facilities. The customer will be
advised of the cost involved and work will not begin until payment is received.
Upgrade of service
Relocating service
Overhead service - too low/too long/too close
Convert service from overhead to underground
Guy wire - move/shorten/install guard covers
Lower underground cables
Contact Chugach’s Construction & Maintenance Department at 762 7655
Page 16
217
Net Metering Generation
This is applicable to eligible on-site generation systems with a nameplate rating of 25 kW or less.
This service is available until the cumulative nameplate of all retail net metered systems equals
1.5 percent of Chugach’s average retail load.
The net metering installation shall include a direct-current electric generator, inverter and its
accompanying equipment package that is physically interconnected to the customer side of the
Chugach meter.
The installation shall generate electric energy from one or more of the following sources; solar
photovoltaic, solar thermal, wind, biomass (including landfill gas or biogas produced from
organic matter, wastewater, anaerobic digesters, or municipal waste), hydroelectric, geothermal,
hydrokinetic or ocean thermal energy and other sources as may be approved by the Regulatory
Commission of Alaska that generally have similar impacts.
The installation shall be operated and either leased or owned by the customer, located on the
customers premises and used primarily to offset all or part of the customer’s requirements for
electric energy.
Any customer applying for net metering service shall submit a completed application,
Interconnection Application for Non-Utility Generation: Class A and B Facilities contained in
Appendix C of the Chugach Tariff.
The installation shall meet all Chugach Electric Service Requirements, Chugach Interconnection
and Operating Guidelines for Non-Utility Generation Up to 5,000 kVA, the interconnection and
operating guidelines contained on Chugach Tariff Sheets 106 through 110, the current edition of
the National Electrical Safety Code, Municipality of Anchorage local amendments and IEEE
1547. The equipment shall be listed as conforming to UL 1741.
Page 17
Page 18
Section 300 - Metering Standards
SECTION 300 - METERING STANDARDS
301
Scope
1.
Chugach’s metering and service equipment requirements are based on practices that are
necessary in order to supply uniform satisfaction and safe service. Interpretations or
clarifications of intent of these requirements are subject to Chugach’s approval.
2.
The following general notes apply to all installation guides and service equipment
specifications in this publication, where applicable.
3.
All metering and service equipment installed in the Chugach service area must conform
to the latest state adopted revision of the NEC, to MOA local amendments to the NEC, to
the latest state adopted revision of the NESC and to Chugach’s requirements as stated in
this publication.
4.
Information on electrical inspection guidelines and instructions on how and when to
schedule an inspection are found in Section 400.
5.
Refer to the Service Standards in Section 500 for typical applications of service entrance
equipment and their installation requirements.
6.
The point of delivery, unless otherwise specified, is that location on the exterior of the
customer’s building or structure where Chugach’s circuit and the customer’s circuit are
interconnected. Chugach’s responsibility for maintenance of service ends at the first point
of contact; whether it is at the current transformer enclosure, panel bus bar, meter socket
for underground, or at the weatherhead for overhead.
302
Metering and Service Equipment Location
1.
Metering and service equipment location is subject to Chugach’s approval. Prior to
wiring a building or structure or performing any electrical construction for a new service
or a change in service, the customer shall request Chugach to designate the location of the
customer metering and service equipment. Chugach will not be obligated to provide
service to a structure at a point not designated by Chugach and a customer who proceeds
without the designation of location may be required to modify the wiring or other
construction to provide for service equipment at a location subsequently designated by
Chugach.
2.
Metering and service entrance equipment shall be on the side of the building nearest to a
Chugach overhead or underground power source facility suitable for providing service
(locations for remote and padmounted switchboard equipment shall be approved by
Chugach in advance of installation). Single-occupancy residential service installations
shall be within 3 feet of the corner of the structure nearest to the available power source.
Chugach Engineering shall approve all metering and service equipment locations larger
than 200A in advance. Where building occupancy requires more than 3 feet, the meters
shall be grouped at one readily accessible location. (Note: Chugach approval for other
Page 19
arrangements must be obtained when capacity requirements make multiple services
desirable and are required by the National Electrical Code.)
3.
Metering and service equipment including self-contained meter sockets, CT rated meter
sockets, CT cabinets, CT compartments of switchboards, meter and service disconnects
shall be located on the exterior of the building or structure.
4.
Metering and service entrance equipment shall be located level and plumb, outdoors on
the customer’s structure (building, post or pedestal). The metering and service equipment
may not be placed in a locked area. Metering and service entrance equipment must be
firmly supported and be in locations free from vibration, mechanical injury or falling ice
or snow and accessible at all times for reading, inspection, testing and replacement. The
term “accessible” is defined as a safe and sanitary (free of obstacles and unsanitary
debris) access to, from and at the service entrance equipment location work area (see
302.14).
5.
In multiple occupancy buildings, all meters shall be located at a common location or as
otherwise specified by Chugach. This same requirement applies when one or more meter
sockets are added to existing services for a multiple occupancy building.
6.
Metering and service equipment shall not be placed in any unsafe location as determined
by Chugach. These include locations under inclined roofs subject to sliding ice and snow.
Metering and service equipment shall be installed on the gable end of the structure when
it is available. When metering and service equipment must be installed on the eave side
of a metal roofed structure, roof-mounted snow anchors, snow gates or snow diverters are
required above the service equipment location.
7.
Metering and service equipment shall not be located directly above or below any
stairway, ramp, or steps.
8.
Metering and service equipment shall not be located in any underground vault or other
depressed location. Window wells are not permitted within the working surface area (see
302.13).
9.
Locating metering and service equipment in carport, porch or patio areas shall be avoided
due to possible future enclosure of such areas, resulting in inconvenience and expense to
the customer when it becomes necessary to move the meter location to maintain access
and exterior service equipment location requirements.
10.
Chugach does not permit the installation of the customer’s service equipment on Chugach
facilities, such as wood poles or padmounted equipment.
11.
Metering and service equipment are not allowed on mobile structures such as trailers,
houseboats, barges, cranes, skid-mounted facilities, storage sheds, dredges, draglines or
mobile pumping equipment.
12.
Metering and service entrance equipment, including meter sockets, CT cabinets, pull
boxes, switchboard service enclosures and gutters shall be located a minimum of 36
Page 20
inches horizontal from any part of the natural gas service entrance equipment and any
other gas or liquid fuel source (fuel oil, propane etc.). Meters will not be allowed above
or below the natural gas service entrance equipment.
13.
A level standing and working surface shall be provided and maintained in front of each
metering and service equipment installation. A clear and unobstructed working space
shall be provided above this surface. The width of the working space shall be sufficient to
permit ready access to the metering and service equipment, and in no case less than 36
inches or the width of the service equipment (whichever is greater). The height of the
working space shall be equal to the overall height of the service equipment or 78 inches
(whichever is greater).The working space shall extend 36 to 48 inches (defined by NEC
110-26) measured from the enclosure front surface and 10 inches from the centerline of
the meter socket opening to any side obstruction and 9 inches from the meter socket
centerline to any obstruction above or below. The minimum clearance between the
bottom of non-modular service entrance equipment (enclosures that require utility access)
and final grade is 24 inches. Modular service equipment installations require Chugach
approval when 24 inches cannot be met. Refer to Service Guide SG-4 for details. Refer to
Section 303.6.d for additional requirements.
14.
If at any time Chugach determines that a meter access problem exists or may exist (e.g.,
fences, building additions, shrubbery, dogs, unsanitary and/or hazardous materials, etc.)
the customer at their expense shall relocate the metering equipment to a new location
approved by Chugach Engineering (see 302.4).
15.
Chugach is not obligated to provide service to a location not approved by Chugach. A
customer who installs metering and service entrance equipment without prior Chugach
approval may be required, at the customer’s expense, to relocate the metering and service
equipment to an approved location.
16.
The meter socket(s), CT enclosure and other Chugach maintained equipment shall not be
located within a restricted area (e.g., controlled access areas within the International
Airport).
17.
The customer shall not place structures (sheds, decks, etc.) over the top of the Chugach
direct buried conductor that provides electrical service to the property. If Chugach
cannot access a failed conductor because of a conflicting structure, the owner will be
responsible for removing the structure before Chugach will make permanent repairs to
the conductor. The service conductor can be placed in conduit, or the service can be
relocated, prior to making property improvements that limit access.
18.
Metering and service equipment that becomes unsafe shall be repaired or replaced at the
customer’s expense.
Page 21
303
Metering and Service Equipment General Requirements
1.
The meter socket and enclosure shall be designed in accordance with the latest revision of
AEIC-EEI-NEMA Standards for Watt-Hour Meter Sockets, Publication ANSI C12.7 and
with UL Standard for Meter Sockets UL414.
2.
Meter Sequence: The metering arrangement approved as standard and required by
Chugach provides for the line current to first enter the meter and then the disconnecting
means and over-load protective devices (meter-switch-fuse sequence). The only
exception to this is for multiple metering installations with more than 6 (six) meter socket
positions.
7.
All meter sockets shall be ring type; ringless sockets are not approved under any
circumstance.
3.
All single position meter panels shall be surface mount configuration. All multiple
metering sockets and their enclosures shall be either wall mounted or switchboard type.
4.
Test by-pass provision shall be manual link. Automatic type, slide type and lever type
meter socket by-pass devices are not approved under any circumstance.
5.
Meter Socket Mounting Height Requirements:
b)
The mounting height for single position wall mounted meter panels shall be no
more than 72 inches and no less than 60 inches above the finished grade or standing
surface immediately in front of the meter. The mounting height is measured from
the centerline of the meter socket opening to the standing surface immediately in
front of the meter.
c)
The mounting height for post mounted meter panels and padmounted service
pedestals shall be no more than 64 inches and no less than 42 inches above the
finished grade or standing surface immediately in front of the meter. The mounting
height is measured from the centerline of the meter socket opening.
d)
The mounting height for multiple metering equipment shall be no more than 75
inches and no less than 33 inches above the finished grade or standing surface
immediately in front of the meter. The mounting height is measured from the
centerline of the meter socket openings.
e)
Steps or stools are not an acceptable alternative for meeting meter height
requirements.
f)
A platform is an acceptable means for meeting meter height requirements as long as
it is permanent in nature. Platforms shall be constructed from concrete, steel, or
structural lumber rated for ground contact. If a platform is more than 12 inches
above grade, it shall be equipped with stairs, with handrails, and side rails.
Platforms shall be constructed according to International Building Code standards.
Where platforms are used to meet meter height requirements the dimensions of the
Page 22
platform must provide an additional 12 inches of width and depth to the minimum
clearance and working space requirements as defined in Section 302. The maximum
height above grade for any platform used to meet meter height requirements shall
be 30 inches. Platforms with a standing surface more than 30 inches above grade
shall not be acceptable for meeting meter height requirements.
7.
Meter Access Requirements: Customer locking methods for meter enclosures and service
equipment shall provide for independent access by Chugach. Contact the Chugach Meter
Shop for assistance with double locking provision or lock box, if necessary.
8.
Meter Socket Clearance Requirements: Where an adjacent wall or other electrical
equipment extends beyond the face of the meter socket enclosure, a 10-inch minimum
side clearance dimension (measured to the centerline of the meter socket) is required. The
10-inch minimum side clearance requirement applies to all metering installations
(including self-contained, CT rated, commercial service pedestals and multiple metering).
Refer to Service Guide SG-4 and SG-5 for details.
9.
CT Rated Versus Self-Contained Metering Requirements: CT rated metering is required
if either the rated capacity of the service switch exceeds 200 amperes or the capacity of
the conductors supplying a breaker or a group of breakers exceeds 200 amperes. Selfcontained metering is required where the electric service rating is 200 amperes or less.
Chugach does not use class 320 or 400 metering.
10.
Service Capacity Rating: The capacity of a service entrance as related to the sizing of
utility service equipment and conductor shall be determined by the rating of the meter
main or service disconnect switch. In those cases where a main service disconnect switch
is not used, the nameplate rating of the service equipment (bus rating) shall be used.
11.
The customer shall furnish and install the service entrance conductor and service
equipment beyond the point of attachment to Chugach’s overhead or underground service
conductor. All conductor between the overhead service outlet or underground pull section
(utility compartment) shall be suitably enclosed and protected and shall not be concealed
except with the approval of Chugach.
12.
Four-Wire Delta Requirements: All three-phase, 4-wire service supplied from a deltaconnected secondary shall have the phase conductor having the higher voltage (V line –
ground) identified as different from the other two phase conductors. The phase conductor
having the higher voltage shall be located on the right hand position of each meter socket
or CT bus. This applies to existing services only; this type of service is not available for
new services.
13.
Service terminating space in enclosures rated greater than 200 amperes with multiple
meter sockets shall accommodate either compression type NEMA 2-hole lugs or
mechanical lugs (see Service Equipment Specification SE-4). The manufacturer or the
customer’s contractor shall provide all bussing or cable conductor beyond the terminating
lugs. Bus stubs or bussing in the service terminating enclosure used for terminating the
utility service conductor shall have mounting bolts spaced in accordance with NEMA
standards. Refer to the Service Equipment Specification SE-4 for details.
Page 23
304
Grounding and Bonding Requirements
1.
All electric services shall comply with all of the applicable grounding requirements of the
latest revision of the NEC and with any local amendments to the NEC.
2.
The customer is responsible for furnishing, installing and maintaining all components at
the point of connection between Chugach and the premises wiring necessary to comply
with the grounding requirements cited above.
3.
Within the Municipality of Anchorage inspection area, the use of concrete encased
ground electrodes are required where footers exist as part of the structure for new
installations and when available for remodeled structures that include new foundations.
Outside of the Municipality of Anchorage inspection area, two ground rods are required
(because of the quality of concrete encased ground electrodes, their use is recommended
outside the municipality in addition to the required two driven ground rods).
4.
For commercial installations where a concrete foundation does not exist (load centers,
remote meters, etc.) ground rods shall be required as per the NEC.
5.
Where ground rods are used as part of the grounding electrode system, they shall be
placed a minimum of 36 inches from any Chugach underground conductor/conduit,
padmounted equipment, or poles. Enstar requires 36 inches minimum separation between
the ground rod and the gas service line.
6.
Where multiple ground rods are installed as part of the grounding electrode system, they
shall be placed a minimum of 8 feet apart. Locate ground rods to one side of the service
entrance equipment. Do not straddle the riser conduit(s) for underground installations.
7.
A minimum of one ground rod shall be installed, when required, for temporary service
installations. The ground rod shall be placed no more than 72 inches from the service
disconnect.
8.
Ground rod connections must remain visible until inspections are completed. The top of
the ground rods shall be installed 12 inches below surface grade after covering.
9.
CT rated meter sockets are considered non-current-carrying metal parts of the service
equipment and shall be effectively bonded together with all other non-current-carrying
metal parts of the service equipment. CT rated meter sockets shall be bonded in
accordance with all the applicable articles of the latest revision of the NEC. Where a
bonding conductor is used, it shall be a minimum of 6 AWG copper.
10.
Customer system grounding connections may be made inside of CT cabinets, service
conductor terminating enclosures, the service termination compartment of combination
disconnect device and terminating enclosure, and termination compartment of
switchboard style service equipment, as long as the connections do not interfere with the
termination of the utility (supply side) service conductors. The common bonding point
may be located at the main disconnect (internal or external). When the common bonding
Page 24
point is located at an NEC permitted location other than the CT enclosure and the main
disconnect it shall be placarded. The common bonding point shall be located within the
CT enclosure for all installations where there is more than one disconnect. Customer
(load side) grounds shall not be terminated on the neutral bus within the CT
compartment.
11.
The grounding conductor to the grounding electrode (concrete encased and ground rods)
shall be at a minimum, #6 AWG copper unless required to be larger, as specified by NEC
250.66.
305
Sealing and Locking Requirements
1.
All removable access covers for compartments containing un-metered conductors shall be
sealable or lockable. No removable panel or cover requiring sealing or locking shall be
located behind other panels, covers, or doors (except rain-tight enclosure doors).
2.
All top cover panels, side cover panels and rear cover panels providing access to unmetered conductors shall be secured in place with devices that may not be loosened from
the outside. Screws or bolts requiring special tools for installation or removal are not
acceptable alternatives.
3.
Sealable latches, studs with wing nuts, sealing screws, or slot and tab devises shall be
provided as the means of sealing removable access covers.
4.
Hinged cover panels shall be lockable on the side opposite the hinges. Hinged panel
covers shall accept a padlock with a shackle diameter of not less than 5/16 inch.
5.
Removable cover panels shall be sealed with stud and wing nut assemblies on opposite
sides of the panel. Alternate sealing methods may be used if the removable covers are
self-supporting with the captive screws and sealing provisions removed.
6.
Stud and wing nut sealing assemblies shall consist of a ¼ inch x 2 inch minimum stud
and associated wing nut, each drilled 0.0635 inch (minimum) for sealing purposes. The
stud shall be securely attached so as not to loosen or back out when being fastened.
7.
Sealing screws shall be drilled 0.0635-inch (minimum) for sealing purposes.
8.
Latching devices shall be designed to permit positive locking and shall be made of a
durable corrosion resistant material.
9.
All securing screws for removable panel covers shall be captive.
10.
All sealing and locking provisions must be OEM, provided and installed by the
equipment manufacturer or be an OEM field retrofit kit provided by the manufacturer.
Sealing and locking provisions provided by a third party manufacturer are not acceptable.
Page 25
11.
All CT cabinets and compartments shall have hinged front cover access to the CT’s. The
hinged cover shall be lockable and shall accept a padlock with a shackle diameter of not
less than 5/16 inch. The hinged front cover requirement applies to all CT compartments,
single-phase and three-phase, in wall mount and switchboard style equipment.
12.
The term “lockable” is defined as accepting a padlock with a shackle diameter of not less
than 5/16 inch.
13.
Key lock handles where the locking mechanism is an integral part of the handle assembly
are not an acceptable means of locking or securing doors or panels covering any space,
compartment, or section with unmetered conductors or metering equipment or meter
disconnect devices or main service disconnect devices.
306
Service and Meter Disconnect Requirements
1.
General Requirements - Meter Disconnects
a)
For each and every meter the customer shall furnish a circuit breaker, fused switch,
or other approved disconnecting means with over-current protection referred to in
these requirements as a meter disconnect.
b) The meter disconnect shall control all of and only the energy registered by its related
meter.
c)
In certain types of CT rated metering applications, the meter disconnect may consist
of up to six separate devices.
d) For multiple disconnect panels (MDP) a single lockable breaker ahead of and
feeding all of the individual breakers is acceptable.
2.
Meter Disconnects – Locking Provisions
a)
Meter disconnects supplied from CT compartments shall be capable of being locked
in the open position.
b) Locking provisions may be:
1) A lockout device which is incorporated as an integral part of each meter
disconnect, or
2) A lockable cover for each meter disconnect where the lock prevents the
operation of the disconnect and prevents removal of the cover, or
3) A lockable cover for multiple meter disconnects where the lock prevents the
operation of the disconnect, prevents removal of the cover and all disconnects
are supplied from a single CT compartment.
Page 26
4) Items 1, 2 and 3 shall be permitted to be accomplished by a maximum of two
locking provisions per disconnect.
5) For fused disconnects, the fuse access cover shall be lockable when the
disconnect is locked in the off (open) position.
6) All locking provisions for disconnects shall accept a padlock with a shackle
diameter of not less than 5/16 inch.
c)
3.
Locking provisions shall be original equipment manufacturer (OEM) or a retrofit
designed and provided by the equipment manufacturer.
Main Service Disconnects – Self-Contained Metering
a)
A main service disconnect device is installed on the supply (utility) side of a group
of meter sockets and may be a circuit breaker, fused disconnect, or other approved
disconnecting means.
b) A service disconnect shall be installed on the supply (utility) side of more than six
meter sockets.
c)
4.
A service disconnect is not permitted on the supply (utility) side of six or fewer
meter sockets.
Remote Control Option (Shunt Trip):
Meter disconnects supplied from CT
compartments may be located indoors under the following specific conditions:
a)
Meter disconnects located indoors shall provide for remote operation of the
disconnect device or devices by means of a shunt trip device.
b) Meter disconnect devices placed indoors shall be located nearest the point of
entrance of the service conductors.
c)
The shunt trip device may be either the safety switch type or a two-position rotating
type switch inside an enclosure.
d) The safety switch must be suitable for the environment and be lockable in either the
“on” or “off” position. Interlock contacts may be used to provide correct handle
location. The “off” position must disconnect the power.
e)
The shunt trip switch must be placed within an enclosure rated for the environment
with a hinged access cover. The enclosure shall be large enough for the required sign
to be mounted on it. The enclosure must have a padlock hasp with the padlock
accessible for removal with bolt cutters by emergency responders. No padlocks with
hardened shackles are permitted. The maximum shackle diameter is limited to 5/16
inches. The shunt trip switch shall be a maintained contact (non-momentary) with
“off” and “on” clearly identified. The “off” position shall disconnect the power.
Page 27
f)
Push button switches, whether momentary contact or sustained contact, are not
acceptable; they are prohibited from use.
g) The shunt trip device enclosure shall be labeled with the following language:
“SERVICE SHUNT TRIP - UTILITY”.
h) The label for a shunt trip device shall be engraved laminated plastic with 1-inch high,
block type, open face white letters on a red background. The label shall be attached
by screws, rivets or a plastic to metal epoxy adhesive rated for exterior applications
with a temperature range of 120 to -40°F. The label shall meet the requirements of
the most recent revision to the Uniform Fire Code.
i)
Shunt trip devices shall meet the requirements of the Anchorage Fire Department
Information & Policy Bulletin 05-003, dated March 1, 2005. Refer to the MoA
Building Safety Division Policy E.04 - Electrical Disconnects.
j)
Meter and main service disconnects located indoors and operated by means of a
remote shunt trip device shall meet all locking requirements of those located
outdoors. Main distribution panels with key-lock handles or flush mount socket type
locks and/or latches are not acceptable for use as meter disconnect devices.
k) Contact Building Safety Electrical Inspections or Anchorage Fire Department Plan
Review for similar requirements concerning equipment supplied by on-site alternate
power sources.
l)
5.
307
Services with shunt trip disconnects may require a test to demonstrate complete
shunt trip function.
Except where otherwise specified in these requirements, no sealing and/or locking
provisions for securing unmetered conductors or bus and no locking provisions for
securing meter disconnects or main service disconnects may be placed behind any door
or panel or concealed from view in any manner.
Self-Contained Metering Requirements
1.
Self-contained meters are designed to carry rated current and to be energized at line
potential. They do not require auxiliary instrument transformers to step down line current
and/or voltage. Self-contained meter sockets are required on all electric services with a
rating of 200 amperes or less.
2.
Service equipment with a minimum rating of 200-ampere is required for all selfcontained services except for: 1) self-contained service equipment with a minimum 100ampere rating is acceptable for use on overhead services, and 2) 100-ampere rated service
equipment with test block by-pass may be used on non-residential remote meter bases
and load centers for overhead and underground services.
Page 28
3.
Self-contained meter sockets shall be furnished, installed and wired by the customer.
When self-contained meter sockets are installed in switchboards, the switchboard
manufacturer shall wire them.
4.
For each and every meter the customer shall furnish and install a circuit breaker, fused
switch, or other approved disconnecting means with over-current protection referred to in
this book as a meter disconnect. The meter disconnect shall control all of and only the
energy registered by its related meter.
5.
Self-contained meter sockets shall have a maximum ampere rating not less than the
ampere rating of the associated meter disconnect. The maximum ampere rating is 125%
of the continuous duty rating.
6.
Meter sockets used in residential applications shall meet the requirements of SS-1,
include a disconnect, and shall be located on the exterior of the building.
7.
Meter sockets used in commercial, industrial, or non-residential applications shall meet
the requirements of SS-1, shall include a disconnect test block with manual by-pass or
safety socket. The meter socket shall be located on the exterior of the building, as
applicable. The following non-residential applications do not require test block with bypass: decorative lighting, head bolt heater receptacles, Lake Hood/Spenard floatplane tie
downs, and thaw wires.
8.
Meter sockets used in commercial, industrial, or non-residential applications at 480-volt
require a safety socket. A safety socket is required for all commercial, industrial, or nonresidential applications installed without a manual by-pass provision.
9.
Automatic type, slide type, horn type, screw type and lever type meter socket by-pass
devices are not allowed under any circumstances or conditions.
10.
The service termination facilities of meter sockets used in underground service
applications shall be specifically designed to accept underground service risers.
Enclosures designed for either overhead or underground entry are acceptable provided
they meet the requirements for both types of cable entry.
11.
The service cable entry section and the meter socket shall be sealable and isolated from
other integral enclosure sections, which are accessible to the customer, in order to
effectively prevent the attachment of unauthorized connections to the supply side (unmetered) conductors and/or terminals.
12.
Meter sockets used in underground service applications shall have a separate cover plate
for the section of the socket that receives the meter and a separate cover plate for the
utility side termination compartment. Chugach prohibits the use of meter sockets with a
single common cover plate for the meter socket and utility side termination compartment,
except for overhead service installations. Note: All services within the MoA
underground surcharge area require underground feed.
Page 29
13.
Network service installations require a factory installed 5th jaw or a factory supplied 5th
jaw kit. The 5th jaw shall be located in the 9 o’clock position.
14.
The 5th jaw and associated wiring shall be removed from meter sockets equipped with a
5th jaw for network service when it is supplied with a single-phase, 3-wire 120/240service voltage.
15.
Load center installations require clear and permanent labeling attached to the outside of
the enclosure that identifies the owner and the type of service. The type of service shall
be designated with the code shown in Service Standard SS-14. The meter will not be
installed until after the labeling is complete. Remote meter locations shall identify the
address of the building that is served.
16.
Examples of acceptable permanent identification labeling are: 1) 3M Scotchcal 220 cut
vinyl decals or, 2) an embossed metal or engraved laminated plastic identification plate
attached by screws, rivets or a plastic to metal epoxy adhesive rated for exterior
applications with a temperature range of 120° to -40°F. All lettering and numbering for
the code designation shall be a minimum of ¾ inch in height, custom printed ownership
decals are acceptable.
308
Multiple Metering Requirements
1.
The customer shall furnish and install multiple metering service equipment with selfcontained meter sockets appropriate to the type of service and the number of metered
points requested. Multiple metering service equipment shall be located on the exterior of
the building. All meters shall be mounted at a common location approved in advance by
Chugach Engineering.
2.
Multiple metering service entrance equipment shall be located on the exterior of the
building or structure.
3.
The customer shall arrange the wiring of a multi-occupant building so that the wiring for
all stores, apartments, or other individual units will terminate at a common point or points
designated by Chugach. Multiple points of delivery or metering on the same premises
may not be utilized without the prior written consent of Chugach. All meters and related
service entrance equipment shall be mounted at a common location approved in advance
by Chugach Engineering.
4.
For each and every meter the customer shall furnish and install a circuit breaker, fused
switch, or other approved disconnecting means with over-current protection referred to in
this book as a meter disconnect. The meter disconnect shall control all of and only the
energy registered by its related meter.
5.
Each individual meter in a multiple metering installation shall serve only one dwelling
unit or commercial space. One meter shall not serve multiple dwelling units or
commercial spaces.
Page 30
6.
A main service disconnect device shall be installed on the supply side (utility) of a group
of more than six meter sockets. The main service disconnect may be a fused or non-fused
switch, a molded case circuit breaker, or a molded case switch.
7.
Multiple metering equipment with fewer than seven meter socket positions shall not have
a main service disconnect on the supply side (utility) of the meter sockets. These
installations shall follow the meter-switch-fuse sequence.
8.
All main service disconnects on the supply side (utility) of a multiple metering
installation, whether a residential or a commercial application shall have factory designed
and installed sealing and/or locking provisions for all areas of the enclosure except for
access for fuse replacement or switch operation.
9.
All combination disconnect device and terminating enclosures shall meet the
requirements of Service Equipment Specification SE-3.
10.
All combination disconnect device and terminating enclosures, whether for residential or
commercial application, shall have terminating provision for the supply (utility) service
conductor meeting the requirements of Service Equipment Specification SE-4, utility
service conductor shall not terminate on a molded case switch or breaker.
11.
The maximum ampere rating for combination disconnect devices and terminating
enclosures shall be 1200 amps for three-phase and 800 amps for single-phase sources.
12.
All services with multiple metering requirements having ampere ratings of 1201 amperes
and above shall use switchboard style service section type equipment for terminating
supply side service conductor.
13.
The minimum pull section compartment sizes for the supply side (utility) service
conductor termination in switchboard style service equipment shall meet the requirements
of Service Equipment Specification SE-2.
14.
Minimum pull section compartment sizes for supply side (utility) service conductor
terminations on combination terminating enclosures and multiple metering panels for
residential services having from two to six meter socket positions shall meet the
15.
Combination residential multi-meter panels, up to six maximum with ampere ratings
from 201 amps to 600 amps, shall have supply side terminals that meet the requirements
of Service Equipment Specification SE-4.
16.
Non-residential multiple metering installations, up to six meters maximum, using
modular wall mounted metering equipment requires a wall mounted pull/terminating
cabinet with supply side terminals that meet the requirements of Service Equipment
Specifications SE-2 and SE-4.
Page 31
17.
Combination residential multi-meter panels and wall mounted modular multi-meter
panels used in residential applications are limited to a maximum of four meter sockets
installed vertically in each panel.
18.
Non-residential multiple metering installations, including wall mounted and switchboard
style service equipment, are limited to a maximum of three meter sockets installed
vertically in each panel.
19.
Multiple metering service equipment without factory-installed bussing requires
permanent (non-removable) solid metal barriers to isolate the supply side (utility)
conductors from the load side (metered) conductors.
20.
Barriers used in multiple metering enclosures to separate customer and utility
compartments/sections (e.g., pull sections/metering compartments) shall be constructed
from 16-gauge steel (minimum). The barriers shall be secured within the interior of the
supply side (utility compartment or section) so that they may not be removed from the
customer section or the exterior of the enclosure.
21.
The service termination compartment, meter socket enclosure, test-block/by-pass
compartment and raceways with supply side (utility) conductors require separate,
removable and sealable access panels or covers. Two lifting handles are required for all
panels greater than 16 inches in width.
22.
All meter sockets used for non-residential multi-metering service equipment shall be
equipped with a safety socket feature and factory-installed test block/by-pass provision.
23.
Self-contained meters installed in switchboards require meter sockets that meet the
24.
Each meter socket position and each respective meter disconnect device shall be clearly
and permanently identified designating the specific location served (apartment/unit
number, street address, suite, etc.). Business names may be included, but shall be
supplemented by the specific location information. The relation of the socket, breaker and
portion of the structure shall be readily discernable. Meters will not be installed until after
the labeling is complete.
25.
Examples of acceptable permanent identification labeling are: 1) 3M Scotchcal 220
embossed style decals, and 2) an embossed metal or engraved laminated plastic
identification plate attached by screws, rivets or a plastic to metal epoxy adhesive rated
for exterior applications with a temperature range of 120° to -40°F. All lettering and
numbering shall be a minimum of ¾ inch in height; marking with permanent marker and
office style label markers are not acceptable.
Page 32
26.
When the layout of a multiple metering installation has been established for a building or
structure, any future meter sockets shall conform to that plan. When making additions to
the existing service equipment the new equipment shall be similar and shall be used as
intended by the service equipment manufacturer (e.g., individual wall mounted singleposition meter sockets shall not be added to existing wall mounted modular or wall
mounted multiple metering panels.
309
CT Rated Metering Requirements
1.
Current Transformer (CT) rated metering is required where the service entrance ampere
rating, as determined by Chugach, is greater than 200 amps. Chugach does not use 320 or
400 class metering.
2.
CT rated meter sockets, CT cabinets, and all associated service equipment (including
service disconnect devices) shall be located on the exterior of the building or structure.
Refer to Section 302 for details on metering and service equipment location.
3.
The CT enclosure/side gutter, CT mounting and bus, CT rated meter socket, rigid conduit
and related fittings between the CT cabinet and the meter socket shall be furnished and
installed by the customer.
4.
A CT rated meter socket meeting the requirements of Service Equipment Specification
SE-7 (non-panel mount) shall be installed for each CT rated service.
5.
All CT service equipment installations shall include a disconnect device or devices
meeting the requirements of Section 306.
6.
The service disconnect shall be located downstream from the CT cabinet. No customer
owned or customer controlled disconnect device shall be installed ahead of the CT
metering. Refer to Section 303 for details.
7.
CT rated meter sockets and related rigid steel conduit for meter wiring are considered
non-current carrying parts of the service equipment and shall be effectively bonded
together with all other non-current carrying metal parts of the service equipment. CT
rated meter sockets and associated rigid steel conduits shall be bonded in accordance with
all applicable articles of the latest revision of the NEC. Where a bonding conductor is
used, it shall be a minimum of #6 AWG copper.
8.
The conduit connecting the meter socket and the CT cabinet shall be a direct run without
access points (e.g., junction boxes, and condulets with access covers).. The maximum
conduit length is 25 feet with a 1-inch minimum diameter. The total of all bends is
limited to 270 degrees. Rigid steel conduit is required.
9.
The conduit connecting the meter socket and the CT cabinet shall enter the side of the
meter socket enclosure in one of the lowest factory supplied conduit entrances
(knockouts). The conduit entrance into the CT cabinet shall be even with or in front of
the CT bus.
Page 33
10.
The conduit connecting the CT rated meter socket enclosure and the CT cabinet shall
provide a minimum of three inches of unobstructed wiring space at the CT cabinet
entrance. Obstructions, including the CT mounting base support brackets or load side
(customer) conductors, shall be positioned to maintain the three-inch wiring space.
11.
CT rated meter installations shall meet the clearance and working space requirements of
Section 303 and Service Guide SG-4.
12.
A wall mounted CT cabinet meeting the requirements of Service Standards SS-10, SS-11
or SS-12, as applicable, shall be installed for each CT rated service. The minimum
dimensions for wall mounted CT cabinets/side gutters shall comply with the requirements
of Service Standard SS-11or SS-12, as applicable.
13.
The mounting height for wall mounted CT meter sockets shall be between 60 inches and
72 inches from socket centerline to final grade. For post mount (remote) installations the
mounting heights are between 64 inches and 42 inches. The preferred height for either
installation is 50 inches.
14.
Wall mounted CT cabinets shall be installed so that the top of the cabinet is no more than
90 inches above final grade. The bottom of the cabinet shall be no less than 16 inches
above final grade.
15.
CT cabinets and compartments require a hinged front cover. The cover shall be lockable,
accepting a padlock with a 5/16-inch shackle diameter. The requirement for a hinged
cover applies to all wall mounted CT cabinets (single-phase and three-phase). Screw
mounted covers are approved for side gutters containing supply side conductor. All wall
mounted service equipment requires a NEMA 3R rating.
16.
2000 amp and lower three-phase and 800 amp and lower single-phase CT service
installations require a bar type CT mounting provision. The ampere rating of the CT
mounting/bus assembly shall equal or exceed that of any conducting portion of the
service equipment. NEMA 4-hole CT bus terminals are required for applications that
exceed 1400 amps.
17.
All CT service installations between 2001 and 4000 amps requires a CT mounting base or
rack with removable bus links (5” maximum) and CT support brackets. The ampere
rating of the CT mounting/bus assembly shall equal or exceed that of any conducting
portion of the service equipment. The removable bus links and support brackets shall
meet the requirements of Service Standard SS-13.
18.
CT mounting bases, interiors, or racks shall meet or exceed the Ampacity rating of the
service disconnect(s).
19.
CT mounting bases, interiors, or racks shall have an ampacity rating equal to or greater
than the service capacity rating.
20.
For three-phase applications, CT mounting bases, interiors, or racks shall have a
minimum AIC rating of 50,000 amps.
Page 34
21.
CT meter wiring shall not be allowed in the same conduit as the supply conductor
(utility). The conduit connecting the meter socket and the CT cabinet is for utility
metering wiring only.
22.
CT cabinets or compartments shall not be used as a junction point to serve other metered
circuits.
23.
The CT cabinet is limited to the supply side (utility) and load side (customer) conductors
only. No other conductors or devices may be installed in or routed through the CT
compartment. The side gutter is limited to the supply side (utility) conductors only.
24.
The load side (customer) conductors shall not pass over the top of, in front of, or in any
way restrict access to the supply side (utility) conductors or CT’s. A larger CT cabinet
may be necessary to meet this requirement.
25.
Padmount enclosures with a CT compartment on one side and a service termination
compartment on the opposite side are permitted under certain circumstances and
conditions. Contact Chugach Engineering for specific details and approval.
26.
Wall mounted three-phase CT service installations from 201 – 800 amps where the load
side conductors exit through the bottom of the cabinet can install a cabinet with a
minimum width of 36 inches.
27.
All CT installations require grouping of the supply side conduit riser(s) to ensure that
they enter the bottom corner of the enclosure (bottom of the side gutter for SS-11, 12 and
13A) in an array that minimizes obstructions to training the conductor to reach the upper
bus terminals. Where more than two conduits are installed the conduit may require a
stacked configuration as opposed to horizontal.
28.
Services rated from 201 amps to 1200 amps are restricted to connectors with a maximum
width of 2-1/8 inches. Connectors (compression and mechanical) shall not be altered or
modified in any way.
29.
The supply side (utility) and load side (customer) connectors shall be 2-hole. One-hole
connectors are not approved. Compression and mechanical connectors shall not be
modified.
30.
Where more than one CT metered (or a combination of self-contained meters and CT
rated meters) point is required, the customer shall furnish a wall mounted
termination/pull box that complies with the requirements of Service Equipment
Specification SE-2. The termination/pull box shall have an ampere rating not less than the
total of the ampere ratings of all of the metered circuits that are fed directly from it. The
customer shall supply and install the conductors from the load side of the termination/pull
box to the supply side of each metered component (refer to Service Guide SG-2).
a)
Chugach limits these installations to a maximum of three CT rated points to be
served. The total combined service ampere rating is limited to 1200 amps. Where
more than three CT rated metering points are required, or when the total combined
Page 35
service ampere rating exceeds 1200 amps, switchboard service equipment is
required.
b) Where a combination of CT metered points and self-contained metering points are
required, the total service Ampacity shall not exceed 1200 amps. This type of
installation is limited to a total of six main disconnect points (e.g., one CT metered
disconnect and up to five self-contained meters with individual disconnect breakers
or one CT metered disconnect and a fused disconnect with ganged self-contained
meters up to the Ampacity limit of the termination/pull box or 1200 amps
maximum).
c)
310
The wall mounted terminating/pull box shall meet the requirements of Service
Equipment Specification SE-2. The CT rated and/or self-contained metering points
shall meet the requirements as specified by the applicable sections of this
publication.
Switchboard Service Equipment Requirements
1.
Switchboard service equipment, meter sockets and all associated service equipment shall
be provided by the customer and installed on the exterior of the building or structure in
accordance with Section 302.
2.
All switchboards shall meet the requirements of NEMA PB-2, UL 891 and the latest
revision of the NEC. All sections and devices shall be listed and labeled accordingly.
3.
All switchboards shall be housed in a NEMA 3R rated enclosure meeting the
4.
Switchboard service equipment must be designed and manufactured specifically for
terminating the supply side (utility) conductor and for housing the CT’s. Additional
sections may include the customer’s service disconnect and fire pump terminal.
5.
All switchboards shall be hot sequenced with the line current first entering the CT’s and
then the disconnecting device and over-current protective devices (meter-switch-fuse
sequence). The only exceptions to this rule are for multiple metering installations with
more than six meter socket/disconnect provisions and fire pumps.
6.
For each CT rated meter in a switchboard service section installations, the customer shall
install a circuit breaker, fused switch or other approved disconnect with over-current
protection. Refer to Section 306 for details.
7.
Customer owned or controlled disconnects are not permitted on the unmetered side
(upstream) of the CT compartment. Refer to Section 303 for details.
8.
Switchboard service equipment shall be “front only accessible” such that all supply side
connections can be made from the front of the equipment.
Page 36
9.
Switchboard service equipment cover panels (top, front, rear and side) that can be
removed from outside any of the supply side (utility) compartments shall be sealable or
lockable. Sealing or locking provisions shall not be concealed or placed behind a door or
panel. The switchboard section manufacturer shall supply the sealing or locking
provisions as part of the original equipment or as an OEM retrofit kit, non-factory
modifications are not acceptable.
10.
Unmetered (utility side) conductors or bus and metered (customer side) conductors or bus
shall not occupy the same conduit, raceway or compartment when installed in a
switchboard service section.
11.
Barriers used in switchboard equipment to separate the supply side (utility) and the load
side (customer) sections/compartments shall be constructed from 16-gauge (minimum)
steel and secured with devises that prevent removal from either the customer side or the
exterior of the switchboard equipment. The switchboard section manufacturer shall
supply the barriers as part of the original equipment or as an OEM retrofit kit, nonfactory modifications are not acceptable.
12.
CT compartments in switchboard service equipment shall have hinged access doors
meeting the requirements of Service Equipment Specification SE-7. The hinged access
doors shall be lockable and accept a padlock with a 5/16-inch shackle diameter. The
switchboard section manufacturer shall supply the locking provisions as part of the
original equipment or as an OEM retrofit kit, non-factory modifications are not
acceptable.
13.
CT compartment size for switchboards rated from 201 amps to 1000 amps shall have
minimum dimensions meeting the requirements of Service Standard SS-10.
14.
15.
16.
CT mounting provisions for switchboards rated from 201 amps to 2000 amps shall be
designed with a bar CT mounting provision. NEMA 4-hole CT bus terminals are required
for applications between 1401 amps and 2000 amps.
17.
CT mounting provisions for switchboards rated from 2001 amps to 4000 amps shall be
designed with removable bus links and CT brackets meeting the requirements of Service
Standard SS-13.
18.
Switchboard service equipment shall be configured so that the centerline of the CT’s
when mounted shall be between 48 inches and 72 inches above the standing surface
directly in front of the CT compartment.
19.
Conductors shall not be rerouted through a CT compartment. Supply side conduit,
raceway and wiring gutters are limited to un-metered supply side (utility) conductor only.
Page 37
20.
The switchboard service equipment for single metered applications may be equipped with
either a wall mounted meter socket, a meter socket attached to the outside exterior wall of
the CT compartment, or a 15-inch hinged meter panel meeting the requirements of
Service Specification SE-7. The conduit entrance into the CT cabinet shall be even with
or in front of the CT bus for all external meter socket configurations.
21.
The switchboard service equipment for multiple metered applications shall be equipped
with 15-inch hinged meter panels meeting the requirements of Service Equipment
Specification SE-7. For multiple self-contained metered applications the equipment shall
meet the requirements of Service Equipment SE-6.
22.
When two or more switchboard service sections are supplied from one set of supply
conductors, the supply conductors serving these switchboards shall be terminated ahead
of and outside of the CT compartments in a separate sealable enclosure. The supply side
conductors are to be arranged so they are readily accessible without disturbing the CT’s
and associated secondary wiring.
23.
Switchboard service equipment requires underground termination provisions that meet
the requirements of Service Equipment Specification SE-2 and SE-4.
24.
Switchboard services shall be placed on a concrete pad that is configured to provide
separation of the unmetered (utility) and metered (customer) conductors. Vault or box
pads require a concrete barrier wall to provide this separation.
311
High Voltage (Primary) Metering
1.
High voltage instrument transformers (current and potential) and transformer-type meters
may be required for customers taking service at primary voltage under provisions of the
Chugach Tariff. Chugach Engineering shall be consulted before construction begins to
establish a mutually satisfactory location for the point of delivery and to clarify meter
details.
2.
Chugach shall furnish and install high voltage metering cabinet(s), current and voltage
transformers, meter sockets, and all related secondary wiring.
3.
Chugach shall require the customer to provide a switch cabinet (to Chugach’s
specification) immediately after the primary metering enclosure. Contact Chugach
Engineering for details.
312
1.
Load Control and Pulse Metering
Chugach encourages the use of load leveling control equipment by the customer since it
can relieve distribution and transmission facilities of unnecessary peak loadings.
Additionally, as power costs increase, controlled loads may become desirable in the long
term, both for the customer and Chugach.
Page 38
2.
Chugach will install a meter with a pulse initiator in order to provide pulses for customer
use. The customer shall pay the cost of this installation in excess of the cost of a standard
meter installation.
3.
The customer shall bring control wiring to the Chugach terminal block and Chugach
personnel will make the final connections (refer to SG-8). The customer shall not tamper
with Chugach’s metering installation and shall be liable for disconnection of service
pursuant to cases of tampering. The customer shall notify Chugach whenever a
malfunction in the metering installation appears to exist.
4.
Chugach will proceed with the installation of the metering equipment subject to parts
availability. The customer will be notified should the installation be delayed. Chugach
will provide a standard metering installation until the necessary parts are available (for
new installations and maintenance).
313
Meter Testing
Upon request by a customer, Chugach will test an electric meter. If the test results demonstrate
that the meter varies more than 2 percent from 100 percent accuracy standard as determined by
the State of Alaska, the test will be performed at the expense of Chugach. If the meter does not
vary from the standard tolerance, a charge will be made to the customer requesting the test in
accordance with the Schedule of Fees and Charges contained in the Chugach tariff. The meter
test will be conducted during normal business hours and, if requested, in the presence of the
customer.
314
Fire Pump and Fire Pump Equipment
1.
Chugach acknowledges NEC requirements, permissions, and exceptions with regard to
fire alarms, fire pump equipment and fire sprinkler systems. The NEC does allow
attachment of such equipment to the supply side of the service disconnecting means.
Chugach shall not allow or permit any customer equipment to be attached to the supply
side of the utility metering equipment.
2.
Chugach views all fire alarms, fire pump equipment and fire sprinkler systems as nonutility equipment and will not allow circuits serving this equipment to be placed in the
CT compartment, service termination compartment or the service termination section of a
switchboard service enclosure. All requirements with regard to separation and barriers
stated in Section 310 are in effect with respect to fire alarm and fire pump equipment.
3.
If the electric service entrance for a building or structure utilizes switchboard service
style equipment, then a separate area outside of the sealable sections for the attachment of
the fire alarm and fire pump equipment conductors must be a integral part of the
electrical service entrance equipment design.
Page 39
4.
315
Circuits for fire alarm and fire pump equipment may be installed along with other
customer circuits inside of wall mounted CT cabinets as long as such attachment remains
on the load side of the CT’s where other customer load (metered) conductors are typically
terminated. A separate service will not be provided to feed the fire alarm and/or fire
pump loads.
Unusual Conditions
The above requirements and specifications are a statement of minimum requirements for most
customer metering installations. Standards are necessarily subject to additions and changes as
new developments and progress dictates. In doubtful or unusual instances, special consideration
will be necessary. Chugach shall be consulted as to any conditions that may not be set forth
herein.
Page 40
Section 400 - Inspections
SECTION 400 - INSPECTIONS
401
General Information
Prior to connection of Chugach service, the member/applicant is required to first obtain an
electrical inspection from the governing authority for their service area and then obtain an
inspection and approval by Chugach verifying compliance with these Service Standards and
Requirements. All follow-up inspections will be billed at the current tariff rate. The following
types of work will require an inspection tag:
402
1.
All service installations not previously served by Chugach.
2.
Service entrance equipment or meter base assembly that has been replaced, upgraded,
or relocated.
3.
The service line has been disconnected at Chugach’s facilities for repairs or rewiring
at the customer’s building or service location.
4.
When service to an existing installation has been discontinued for more than one year.
5.
All services disconnected for reasons of safety, hazards, or non-compliance with
codes.
Electric Service Inspection Requirements
The following authorities govern electrical inspections within Chugach’s service area:
Within the Municipality of Anchorage service area:
RESIDENTIAL & COMMERCIAL BUILDINGS
Municipality of Anchorage Building Safety Division
4700 Elmore Road
Anchorage, AK 99507
www.muni.org/building
Information, Permits............................................................................ 343-8211
Inspection Request Line, 24-Hour Recording ..................................... 343-8300
See Page 41 for Municipality of Anchorage Electrrical Service Inspection Requirements and
Procedures.
Note: The Municipality of Anchorage will not perform an inspection unless the inspected facility
has been permitted.
Page 41
Indian, Bird Creek, Girdwood, Portage, Whittier,
Moose Pass, Cooper Landing, Hope, Tyonek, Three-Mile Creek
and locations outside the Municipality of Anchorage inspection area.
RESIDENTIAL OR DUPLEX SERVICE ENTRANCE EQUIPMENT ONLY
Chugach Electric Association, Inc.
563-7494 or, Toll Free (800) 478-7494
Note: Service entrance equipment inspection will be scheduled after service has been
requested through Member Services.
Outside the Municipality of Anchorage inspection area, Girdwood and all points
south. Includes Alyeska, Portage, Whittier, Moose Pass, Cooper Landing, Hope,
Tyonek, Three-Mile Creek.
TRI-PLEXES OR GREATER AND COMMERCIAL BUILDINGS ONLY
State of Alaska
Dept. of Labor, Mechanical Inspections
P.O. Box 107020
Anchorage, AK 99510
(907) 269-4925
MUNICIPALITY OF ANCHORAGE
ELECTRICAL SERVICE INSPECTION REQUIREMENTS & PROCEDURES
All new electrical work on the customer’s side of the meter requires a permit and may be done
by either the homeowner or a contractor licensed by the Municipality of Anchorage. Electrical
work done by the homeowner on their personal residence does not require a licensed
contractor, but does require a permit. Electrical service equipment must be inspected and
approved before connection by the power company. Any inspection performed by Building
Safety requires either a permit for new installations or code compliance agreement for existing
installations.
Electrical permits or code compliance agreements and/or information about permits, fees, or
payment methods may be obtained at the Building Safety permit counter located at 4700 Elmore
Road, by calling the permit counter at 343-8211, or by visiting the web site at
www.muni.org/building. Information about electrical codes should be directed to electrical plan
review at 343-8333 or electrical inspections at 343-8316.
Page 42
403
How And When To Call For Inspection
MUNICIPALITY OF ANCHORAGE: Electrical inspections for services or structures under
permit may be requested by telephone or by fax. Fax inspection request forms are available at the
Building Safety Permit Counter. The fax telephone number is 249-7777. Copy the original form
and fill in the copy for faxing. Your fax will be sent directly to the inspector and then added to
the permit file. The information must be legible and complete.
The 24-hour inspection request line is 343-8300. This is a recording. Please speak clearly and
give the information in the order requested: 1) permit number, 2) contact phone number, 3) type
of inspection, 4) lot, block, subdivision, 5) street address, 6) your name, and 7) any additional
information, e.g., directions, time, etc. To avoid re-inspection fees, cancel your inspection by
phoning Building Safety at 343-7962.
The inspection request line cut off time is 6:00 a.m. Inspection requests made after that time will
not be available to the inspector until the following day. It is the responsibility of the permit
holder to arrange for access to the structure, service equipment, branch circuit panel boards and
the grounding connection at the water supply.
COMMERCIAL SERVICE INSPECTIONS are performed when the installation work for the
line side of the service, up to and including the main disconnect or switchgear, has been
completed.
RESIDENTIAL SERVICE INSPECTIONS are performed during the “wiring rough-in”
inspection of the house. The building wiring, as well as the service, must be complete and pass
inspection. Building Safety Handout E.03 describes the inspection process and is available at the
Public Works Permit Counter, or at Building Safety’s web site, www.muni.org/building. The
specific link to the handout is: (http://www.muni.org/iceimages/bsd/handoute03.pdf ) .
SERVICE INSPECTIONS OF OCCUPIED STRUCTURES. Occupied structures undergoing
repair or replacement of service equipment will receive inspection priority and the inspector will
attempt to schedule inspection times as requested. All electrical work is to be completed and the
existing service disconnected by Chugach before the inspector will approve the service. The
suggested procedure is to schedule a disconnect from Chugach, add the estimated length of time
needed to complete the work, and request the inspection for that time from Building Safety.
INSPECTION OF EXISTING BUILDINGS BEFORE RECONNECTING. The Municipality
shall inspect existing buildings that were disconnected from power before they can be
reconnected. The customer may elect to have the service inspected for code compliance prior to
hiring an electrical contractor. The structure wiring will be inspected for property/life safety
violations. A service tag will be issued upon completion of the inspection if passed by the
inspector. If the service or structure fails the inspection, a list of required changes will be
provided. An electrical permit may be needed and an electrical contractor may be needed
depending on the changes to be made. The inspector will provide directions as to the
requirements. Arrangements for inspections will be scheduled by the permit counter staff and
confirmed by the inspector.
Page 43
PLEASE NOTE: It is not the intention of Building Safety to go through your house or business
looking for electrical violations; however, Building Safety and Chugach have to inspect the panel
and grounding connections to the gas and water piping wherever they may be. If the inspector
observes an electrical situation that he considers an immediate fire and life safety hazard, he may
refuse to issue approval for the service to be energized until the situation is corrected.
STATE OF ALASKA INSPECTIONS: For residential multiple metering triplex residential
buildings and all commercial installations outside of the Municipality of Anchorage inspection
area, contact the State of Alaska Dept. of Labor, Mechanical Inspections (907) 269-4925, P.O.
Box 107020, Anchorage, Alaska 99510.
CHUGACH INSPECTIONS: For all single and duplex residential buildings, load centers and
remote meter bases outside of the Municipality of Anchorage inspection area, phone Chugach at
563-7494 or toll free (800) 478-7494. The service entrance equipment inspection will be
scheduled after service has been requested through Member Services.
Page 44
Section 500 – Service Standards
SECTION 500 - SERVICE STANDARDS, EQUIPMENT SPECIFICATIONS AND GUIDES
SERVICE STANDARDS
SS-1
SS-2
SS-3A
SS-3B
SS-4
SS-5
SS-6
SS-7
SS-8
SS-8A
SS-9
SS-10
SS-11
SS-12
SS-13
SS-13A
SS-14
SS-15
Self-Contained Meter Sockets, 100 to 200 Amps
Current Transformer Meter Sockets Above 200 Amps
Steps to Follow to Obtain Permanent Service
Overhead Permanent Service, 200 Amps or Less, Periscope Mount
Overhead Permanent Service, 200 Amps or Less, Gable Mount
Overhead Service for Temporary Service & Trailers, 200 Amps or Less
Temporary Underground Service
Underground Service, 200 Amps or Less
Underground Service Remote & Trailers, 200 Amps or Less
Underground Service (6 units or less)
Underground Services (6 units or less), Option for Non-Residential
Underground Service (More than 6 units) up to 1200 Amps (800 Amps Single-Phase)
Single-Phase, 201 to 800 Amps; Three-Phase 201 to 800 Amps
Underground Service, Three-Phase, 801 to 1200 Amps
Underground Service, Three-Phase, 1201 to 2,000 Amps
Three-Phase Underground Service up to 4000 Amps
Three-Phase Underground Service, 2001 to 2500 Amps
Underground Service to Load Centers, 200 Amps or Less
Overhead Service for Load Centers, 200 Amps or Less
SERVICE EQUIPMENT SPECIFICATIONS
SE-1
SE-2
SE-3
SE-4
SE-5
SE-6
SE-7
SE-8
Residential Multiple Self-Contained Metering, 6 Units or Less
Wall Mounted Pull Box with Terminal Bus
Wall Mounted Combination Disconnect and Terminal Bus
Terminal Bus Details
Switchboard Style 201-4000 Amps
Switchboard - Self-Contained Meter Detail
Switchboard - CT Meter Detail
Commercial Load Center - Padmounted
SERVICE GUIDES
SG-1
SG-2
SG-3
SG-4
SG-5
SG-6
SG-7
Stand-by Generator Hookup Guide
Combination Service - CT and Self-Contained
Padmount Transformer Clearance
Metering and Service Entrance Equipment - Working Space and Clearance
Clearance for Residential Multiple Metering
Clearance for Switchboard Metering - Interior Mount
Conduit - Service Riser
Page 45
Section 500 – Service Standards
These service standards, equipment specifications and guides are not engineering drawings.
They are reference drawings intended to assist the customer or the customer’s engineer and to
articulate Chugach’s requirements. Any resulting customer installation requires compliance with
Municipal, State or Federal regulations, ordinances and further requires compliance with the
National Electrical Safety Code and the National Electrical Code as adopted by regional
authorities. Chugach personnel are not authorized at any time to waive compliance
requirements.
It is possible that local electrical supply houses may carry certain service entrance equipment that
is acceptable on other electric utility systems but not the Chugach electric system. While
Chugach makes every effort to work with these supply houses in an effort to ensure their
equipment can satisfy Chugach’s requirements, occasionally conflicts arise. Chugach personnel
are not authorized to approve the use of service entrance equipment that does not meet or exceed
Chugach's requirements provided herein.
Page 46
Page 47
Page 48
CHUGACH ELECTRIC ASSOCIATION, INC.
Steps to Follow to Obtain
Permanent Service -- 200 Amps or Less
Please note: Overhead or underground service is available in areas served by overhead lines. In areas served by
underground facilities, you may only receive underground service. Underground service is required in the
MoA Underground Surcharge area.
1
Before any service entrance is installed, the customer, builder or his authorized representative shall obtain agreement
from Chugach as to where the service entrance and meter(s) shall be located. Chugach meters shall be located on the
outside of the building.
2.
Acquire an electrical permit from the Municipal Building Safety Department located at 4700 Elmore Road. This is
for construction within areas of Municipal jurisdiction. Phone: 343-8211.
3.
After your meter base has been installed on your building, call the Municipal Building Safety Department to request
an inspection. See Section 4. This applies only if you are building within the Municipal inspection area.
4.
Building Safety will come out and inspect your meter base. When approved, Building Safety will leave a green
inspection tag on your meter base. This inspection tag has a five-digit number on it. You will need this number when
calling Chugach for a hookup request.
5
If you are a Chugach member, you can phone in your request for permanent power at 762-4729.
6.
If you are not a Chugach member, you will be required to pay a $20.00 non-refundable membership fee. A
membership application will be mailed to you for signature. If the signed application is not returned within 15 days,
you will be scheduled for disconnect. Commercial customers who are not members of Chugach must come in to
apply for service at Chugach’s Member Service Center located at 5601 Electron Drive.
7.
Member Service will ask you for the inspection tag number (five-digit number on the tag), the subdivision, lot, block,
street name, whether you want 100 or 200 amp service, and your account name. A 200A rated meter main is the
minimum size for an underground feed service; overhead services are available to a minimum of 100A. There is a
$15.00 connect fee. Other fees may be required such as meter deposit fees, which may vary, based on electric usage
or credit worthiness.
8.
For extensions of secondary service to a building, Chugach will require the customer to clear a 10-foot wide path from
the Chugach power source to the meter base. The route must be clear of all trees, shrubs, brush, stumps and debris.
9.
Chugach will send out its own inspector to look at your meter base. If it does not pass inspection, Chugach will leave
a form attached to your meter base with the problems listed. Once the meter base passes Chugach’s inspection, your
request will be turned over to one of Chugach’s crew for hook-up. All follow-up inspections will be charged at the
current tariff rate.
10. If your building requires a service larger than 200 amps, you will be required to pay the additional cost above a 200amp service entrance. Current transformers will be installed by Chugach’s Meter Department.
11. 240/480-volt service is available for non-residential installations only.
Page 49
Page 50
Permanent Overhead Service, 200 Amps or Less, Periscope Style
Please note: Overhead or underground service is available in areas served by overhead lines. In areas served by underground facilities, you may
only receive underground service.
1.
The use of this specification is discouraged for all sloped roofs and is not acceptable for use in Girdwood, Whittier and other heavy
snow load areas (exception for flat roof structures). SS-3B or SS-6 required in these areas.
Before any service entrance is installed on any building the customer, builder or his authorized representative shall obtain agreement from
Chugach as to where the service entrance and meter shall be located. Chugach meters shall be located on the outside of the building. The
service entrance must be installed as close as possible to existing Chugach facilities.
2.
The customer's service equipment shall conform to the latest revision of the National Electrical Code, Municipal local amendments to the
NEC, and State and Municipal Codes. Underwriter’s Laboratory (UL) listing is required where applicable.
3.
The customer shall provide a self-contained meter socket appropriate to the type of service requested (100 – 200A). The self-contained
meter socket shall include terminal lugs, meter jaws, and sealing mechanism. All non-residential installations shall include meter sockets
with manual bypass or a safety socket.
4.
Periscope mount riser masts are required for all installations except for flat roof and the gable wall or side of the building. This
requirement is necessary to protect the service equipment and workers from falling ice.
5.
Periscope mount risers require guying if the height of the service deadened clamp exceeds 36" above the roof. Refer to the periscope
mount detail for 2" x 4" blocking requirements.
6.
Minimum overhead service wire clearances are:
a.
11' crossing over the roof of an unattached structure
b.
10' above grade at the service weatherhead (drip loop)
c.
18' above driveways and parking areas.
Note: Where clearances are not met, a Chugach service pole will be required.
7.
The customer's neutral wire shall be identified at the weatherhead with either a white or yellow jacket.
8.
The customer's neutral wire shall be grounded within the service entrance enclosure at the neutral terminal bus. It may not be grounded in
the unmetered service section of the meter base.
9.
Network services require a factory installed 5th jaw or a factory supplied 5th jaw kit to be installed in the 9 o'clock position.
10.
For 3-phase, 4-wire services supplied from a Delta connected secondary, the phase conductor having the higher voltage to ground (power
leg) shall be identified as different (with red tape) from the other two-phase conductors and shall be located on the right hand lug of the
meter socket. This service configuration is not available for new services.
11.
The service entrance shall be securely fastened to the structure using wood screws (for 2" x 4" studs, log walls or other solid lumber),
toggle bolts for wood siding, or concrete anchors (for masonry walls). All screws or bolts shall be 1/4" diameter (minimum), stainless
steel required for masonry walls. A minimum of four fasteners is required to mount the service entrance.
12.
Conduit riser mast clamps must be made of heavy gauge galvanized steel or malleable iron. These may be either 2-hole pipe clamps or
single-hole pipe clamps (two required at each location) spaced 18" on center and one within 12" of meter base. The clamps shall be
securely attached with either lag screws into the solid wood framework or toggle bolts into siding (concrete anchors are required for
masonry).
13.
Where the length of the conduit riser exceeds 10' feet the coupling shall be located on the end closest to the meter base.
14.
Outside of Girdwood, Whittier and heavy snow load areas, periscope mount riser masts are required for all installations except for flat roof
and the gable wall or side of the building. This requirement is necessary to protect the service equipment and workers from falling ice.
15.
All service entrances require an external (located outside the building) lockable service disconnect switch.
16.
Concrete encased ground electrodes are required for all new buildings in the area where the MOA DPW Building Safety performs
inspections. Multiple rod ground electrodes are required outside of the Building Safety inspection area (refer to Section 304).
SERVICE STANDARD
PERMANENT OVERHEAD SERVICE
200 AMPS OR LESS
DRAWING NUMBER
SS-3A
Sheet 2 of 2
Page 51
Page 52
Permanent Overhead Service, 200 Amps or Less, Gable Mount
Please note:
1.
Overhead or underground service is available in areas served by overhead lines. In areas served by underground
facilities, you may only receive underground service.
This specification is required for overhead services in Girdwood, Whittier and other heavy snow load areas. (Periscope style is
permitted with a flat roof structure). Refer to SS-6 for underground service.
Before any service entrance is installed on any building, the customer, builder or authorized representative shall obtain agreement
from Chugach as to where the service entrance and meter shall be located. Chugach meters shall be located on the outside of the
building. The service entrance must be installed as close as possible to existing Chugach facilities.
2.
The customer's service equipment shall conform to the latest revision to of the National Electrical Code, Municipal local amendments
to the NEC, and State and Municipal Codes. UL listing is required where applicable.
3.
The customer shall provide a self-contained meter socket appropriate to the type of service requested (100 – 200A). The selfcontained meter socket shall include terminal lugs, meter jaws, and sealing mechanism. All non-residential installations shall include
meter sockets with manual bypass or a safety socket. All 480-volt installations require safety sockets.
4.
Minimum overhead service wire clearances are:
a. 11' crossing over the roof of an unattached structure
b. 10' above grade at the service weatherhead (drip loop)
c. 18' above driveways and parking areas.
Note: Where clearances are not met, a Chugach service pole will be required.
5.
The customer's neutral wire shall be identified at the weatherhead with either a white or yellow jacket
6.
The customer's neutral wire shall be grounded within the service entrance enclosure at the neutral terminal bus. It may not be
grounded in the unmetered service section of the meter base.
7.
Network services require a factory installed 5th jaw or a factory supplied 5th jaw kit to be installed in the 9 o'clock position.
8.
For 3-phase, 4-wire services supplied from a Delta connected secondary, the phase conductor having the higher voltage to ground
(power leg) shall be identified as different (with red tape) from the other two-phase conductors and shall be located on the right hand
lug of the meter socket. This service configuration is not available for new services.
9.
The service entrance shall be securely fastened to the structure using wood screws (for 2" x 4" studs, log walls or other solid lumber),
toggle bolts for wood siding, or concrete anchors (for masonry walls). All screws or bolts shall be 1/4" diameter (minimum),
stainless steel required for masonry walls. A minimum of four fasteners is required to mount the service entrance.
10. Conduit riser mast clamps must be made of heavy gauge galvanized steel or malleable iron. These may be either 2-hole pipe clamps
or single-hole pipe clamps (two required at each location) spaced 18" on center and one within 12" of each end (at the weatherhead
and the meter base). The clamps shall be securely attached with either lag screws into the solid wood framework or toggle bolts into
siding (concrete anchors are required for masonry).
11. For gable mount weatherheads: a 5/8" galvanized steel eyebolt, mounted with 2" square galvanized steel washers, shall be installed
into suitably braced framework. The point of attachment shall be a minimum of 15' above grade and shall not extend more than two
feet above the weatherhead.
12. Where the length of the conduit riser exceeds 10' feet the coupling shall be located on the end closest to the meter base.
13. All service entrances require an external (located outside the building) lockable service disconnect switch.
14. Concrete encased ground electrodes are required for all new buildings in the area where the MOA DPW Building Safety performs
inspections. Multiple rod ground electrodes are required outside of the Building Safety inspection area (refer to Section 304).
SERVICE STANDARD
PERMANENT OVERHEAD SERVICE
200 AMPS OR LESS
DRAWING NUMBER
SS-3B
Sheet 2 of 2
Page 53
Page 54
Temporary Service in a Neighborhood With Overhead Power
(Reference SS-4, Overhead Service for Temporary Service & Trailers, 200 Amps or Less)
Please note: The only type of temporary service extended to consumers from existing overhead will be overhead to a
pole as shown on Chugach Service Standard SS-4.
1.
Acquire an electrical permit from the Municipal Building Safety Department located at 4700 Elmore Road. This is
for construction within areas of Municipal jurisdiction. Phone: 343-8211.
2.
The meter base for your temporary overhead service may be set no less than 10 feet from Chugach’s facilities and a
maximum distance of 100 feet from Chugach’s facilities. A minimum 10-foot radius must be maintained from
overhead power lines. Do not place the post in the 10-foot wide path between the transformer pole and permanent
service location. An Encroachment Permit is required in advance to locate a temporary meter base within the
Chugach easement.
3.
After your temporary meter base has been set up, call the Municipal Building Safety Department at 563-3464 to
request an inspection. This applies only if you are building within the Municipal inspection area.
4.
inspection tag on your meter base. This inspection tag has a five-digit number on it. You will need this number
when calling Chugach for a hookup request.
5.
If you are a Chugach member, you can phone in your request for temporary power at 762-4729.
6.
you will be scheduled for disconnect. Commercial customers who are not members of Chugach must come in to
apply for service at Chugach’s Member Service Center located at 5601 Electron Drive.
7.
Member Services will ask you for the inspection tag number (five-digit number on the tag), the subdivision, lot,
block, street name, whether you want 100 or 200 amp service, and your account name. There is a $15.00 connect
fee. Other fees may be required such as meter deposit fees, which may vary, based on electric usage or credit
worthiness.
8.
Chugach will send out its own inspector to look at your meter base. If it does not pass inspection, Chugach will
leave a form attached to your meter base with the problems listed. Once the meter base passes Chugach’s
inspection, your request will be turned over to one of Chugach’s crew for hook-up. All follow-up inspections will
be charged at the current tariff rate.
9.
Consumers may have temporary service for up to one year as a courtesy to assist in construction of their building.
It is not intended to be permanent service for your structure. If you require service for longer than one year, a
written explanation will need to be submitted to Chugach for approval.
10.
Temporary services that require three-phase power, or are greater than 200 amps must meet the same equipment
requirements as permanent services.
Page 55
Page 56
Temporary Service in a Neighborhood with Underground Power
(Reference SS-5, Temporary Underground Service)
Please note: The only type of temporary service available to consumers is for connection to a meter base set up on a platform
as shown on Chugach Service Standard SS-5.
1.
Acquire an electrical permit from the Municipal Building Safety Department located at 4700 Elmore Road. This is for
construction within areas of Municipal jurisdiction. Phone: 343-8211.
2.
The temporary meter base for underground service must be set up within 8 to 10 feet of Chugach’s facilities.
3.
After the temporary meter base is set up, call the Municipal Building Safety Department at 563-3464 to request an
inspection. This applies only if you are building within the Municipal inspection area.
4.
inspection tag on your meter base. This inspection tag has a five-digit number on it. You will need this number when
calling Chugach for a hookup request.
5.
If you are a Chugach member, you can phone in your request for temporary power at 762-4729.
6.
you will be scheduled for disconnect. Commercial customers who are not members of Chugach must come in to apply
for service at Chugach’s Member Service Center located at 5601 Electron Drive.
7.
Member Services will ask you for the inspection tag number (five-digit number on the tag), the subdivision, lot, block,
street name, whether you want 100 or 200 amp service, and your account name. There is a $15.00 connect fee. Other
fees may be required such as meter deposit fees, which may vary, based on electric usage or credit worthiness.
8.
Chugach will send out its own inspector to look at your meter base. If it does not pass inspection, Chugach will leave a
form attached to your meter base with the problems listed. Once the meter base passes Chugach’s inspection, your
request will be turned over to one of Chugach’s crew for hook-up. All follow-up inspections will be charged at the
current tariff rate.
9.
Consumers may have temporary service for up to one year as a courtesy to assist them in the construction of their
building. It is not intended to be permanent service for your structure. If you require the service for longer than one
year, a written explanation will need to be submitted to Chugach for approval.
10.
Temporary services that require three-phase power or are greater than 200 amps must meet the same equipment
requirements as permanent services.
Page 57
UNDERGROUND SERVICE
200 AMPS
Page 58
Permanent Underground Service, 200 Amps
Please note:
Overhead or underground service is available in areas served by overhead lines. In areas served by
underground facilities, you may only receive underground service. Underground service is required in
the MoA Underground Surcharge area.
1.
Before any service entrance is installed on any building, the customer, builder or authorized representative shall
obtain agreement from Chugach as to where the service entrance and meter shall be located. Chugach meters
shall be located on the outside of the building. The service entrance must be installed as close as possible to
existing Chugach facilities (see typical location detail) and protected from falling snow and ice.
2.
The customer's service equipment shall conform to the latest revision of the National Electrical Code,
Municipal local amendments to the NEC, and State and Municipal Codes. UL listing is required where
applicable.
3.
The customer shall provide a self-contained ring style meter socket appropriate to the type of service requested.
The self-contained meter socket shall include terminal lugs, meter jaws, and sealing mechanism. All nonresidential installations shall include meter sockets with manual bypass or a safety socket. All 480-volt
installations require safety sockets.
4.
The source side conduit shall be flexible metal conduit (liquid tight) with an insulated busing or ferrule on the
buried end. The conduit must be installed with an offset bend to allow for conduit movement. All conduit
clamps below the offset bend must be oversized to facilitate vertical movement. Non-residential installations
require a rigid steel conduit with a 90 elbow, and shall meet all requirements for non-residential services.
5.
A die-cast metal insulated grounding bushing must be fully threaded onto the liquid tight connector; a liquid
tight connector with an insulated throat may be substituted for the insulated bushing.
6.
The customer's neutral wire shall be grounded within the service entrance enclosure at the neutral terminal bus.
It may not be grounded in the utility conductor entrance compartment of the metered base.
7.
Network services require a factory installed 5th jaw or a factory supplied 5th jaw kit to be installed in the 9
o'clock position.
8.
For 3-phase, 4-wire services supplied from a Delta connected secondary, the phase conductor having the higher
voltage to ground (power leg) shall be identified as different (with red tape) from the other two-phase
conductors and shall be located on the right hand lug of the meter socket. This service configuration is not
available for new services.
9.
All service entrances require an external (located outside the building) lockable service disconnect switch
10.
Concrete encased ground electrodes are required for all new buildings in the area where the MOA DPW
Building Safety performs inspections. Multiple rod ground electrodes are required outside of the Building
Safety inspection area (refer to Section 304).
SERVICE STANDARD
PERMANENT UNDERGROUND SERVICE
200 AMPS
DRAWING NUMBER
SS-6
Sheet 2 of 2
Page 59
Page 60
SS-7, Underground Service Remote & Trailers, 200 Amps or Less
Please
note:
Overhead or underground service is available in areas served by overhead lines. In areas served
by underground facilities, you may only receive underground service.
1.
Acquire an electrical permit from the Municipal Building Safety Department located at 4700
South Bragaw. This is for construction within areas of Municipal jurisdiction. Phone: 343-8347
2.
All remote meter locations require approval from Chugach Engineering in advance of
installation. After your meter base has been installed on the post, call the Municipal Building
Safety Department at 563-3464 to request an inspection. This applies only if you are building
within the Municipal inspection area.
3.
Building Safety will come out and inspect your meter base. When approved, Building Safety will
leave a green inspection tag on your meter base. This inspection tag has a five-digit number on it.
You will need this number when calling Chugach for a hookup request.
4.
If you are a Chugach member, you can phone in your request for permanent power at 762-4729.
5.
If you are not a Chugach member, you will be required to pay a $5.00 non-refundable
membership fee. A membership application will be mailed to you for signature. If the signed
application is not returned within 15 days, you will be scheduled for disconnect. Commercial
customers who are not members of Chugach must come in to apply for service at Chugach’s
Member Service Center located at 5601 Electron Drive.
6.
Member Services will ask you for the inspection tag number (five-digit number on the tag), the
subdivision, lot, block, street name, whether you want 100 amp (non-residential only) or 200 amp
service, and your account name. There is a $15.00 connect fee. Other fees may be required such
as meter deposit fees, which may vary, based on electric usage or credit worthiness.
7.
For extensions of secondary service, Chugach will require the customer to clear a 10-foot wide
path from the Chugach power source to the meter base following the most direct route. The route
must be clear of all trees, shrubs, brush, stumps and debris.
8.
The customer shall provide a self-contained ring style meter socket appropriate to the type of
service requested. The self-contained meter socket shall include terminal lugs, meter jaws, and
sealing mechanism. All non-residential shall include meter sockets with manual bypass or a
safety socket (refer to 307.7 for exceptions). All 480-volt installations require safety sockets.
9.
Chugach will send out its own inspector to look at your meter base. If it does not pass inspection,
Chugach will leave a form attached to your meter base with the problems listed. Once the meter
base passes Chugach’s inspection, your request will be turned over to a Chugach crew for hookup. Follow-up inspections will be charged at the current tariff rate.
10.
Temporary services that require three-phase power, or are greater than 200 amps shall meet the
same equipment requirements as permanent service and use a multiple post support.
11.
For remote services to permanent structures, a permanent sign shall be maintained on the exterior
in a location between five and six feet above grade and within three feet of the corner nearest the
remote meter location. The engraved laminated plastic sign at the building shall be blue or black
letters on white background reading “NOTICE REMOTE SERVICE EQUIPMENT Located 000
ft north/south and 000 ft east/west from this location” (the triangulated distances and bearings for
the actual location inserted). The service equipment shall be labeled with the street address of the
structure. All labeling and signage shall comply with the language in Section 307.16.
Page 61
Page 62
Underground Service Residential (6 Units or Less)
1.
Before any service entrance is installed on any building the customer, builder or authorized representative
shall obtain agreement from Chugach as to where the service entrance and multi-metered equipment shall be
located. Chugach meters shall be located on the outside of the building and accessible by Chugach personnel.
The service entrance must be installed as close as possible to existing Chugach facilities.
2.
applicable.
3.
The customer shall provide a NEMA Type 3R multi-metered enclosure with self-contained meter sockets
appropriate to the type of service requested.
4.
The multi-metered enclosure shall have no more than four-meter sockets per vertical column. Removable
panel covers shall not exceed 6 square feet in area.
5.
The service termination section of the multi-metered enclosure shall conform to Service Equipment
Specification SE-1. A cover independent of any other service equipment shall be removable without disturbing
adjacent panels. Terminal lugs shall be provided. The enclosure cover must be securely fastened to the box
and equipped with tabs or plates for seals and locks.
6.
Ring style sockets and removable panel covers must be compatible with and not interfere with the tamper
proof meter sealing rings. Ringless sockets are unacceptable.
7.
Network services requires a factory installed 5th jaw or a factory supplied 5th jaw kit to be installed in the 9
o'clock position.
8.
The source side conduit shall be galvanized rigid steel conduit for all installations larger than 2” conduit where
flexible metallic conduit is accepted; Chugach Engineering shall specify size, quantity and elbow
requirements. The customer shall install the conduit and elbow(s).
9.
Bonding-type locknuts may be substituted for the service conduit grounding busing and jumpers, where all
concentric knockouts are removed. If bonding-type locknuts are used, an insulating bushing is required. Fiber
bushings are acceptable for conduit larger than 2” diameter, if fully threaded onto conduit (see SG-7).
10.
(Section 306).
11.
SERVICE STANDARD
UNDERGROUND SERVICE
RESIDENTIAL
(6 Units or Less)
DRAWING NUMBER
SS-8
Sheet 2 of 2
Page 63
Page 64
Underground Service Non-Residential (6 Units or Less)
1.
Before any service entrance is installed on any building the customer, builder or authorized representative
shall obtain agreement from Chugach as to where the service entrance and multi-metered equipment shall
be located. Chugach meters shall be located on the outside of the building and accessible by Chugach
personnel. The service entrance must be installed as close as possible to existing Chugach facilities.
2.
applicable.
3.
The customer shall provide a NEMA Type 3R, wall mounted pull box with terminals (SE-2), a sealable and
lockable bussed gutter specifically designed for ganging individual meter sockets under a common feed.
4.
The bussed gutter shall have an ampere rating equal to or greater than the total ampere rating of all of the
meter sockets, which are installed and served from the bus.
5.
Meter main safety sockets with test block by-pass are required. Each meter socket shall have its own circuit
breaker or switch.
6.
Ring style sockets and removable panel covers must be compatible with and not interfere with the tamper
proof meter sealing rings.
7.
Network services requires a factory installed 5th jaw or a factory supplied 5th jaw kit to be installed in the
9 o'clock position.
8.
For 3-phase, 4-wire services supplied from a Delta connected secondary, the phase conductor having the
higher voltage to ground (power leg) shall be identified as different (with red tape) from the other twophase conductors and shall be located on the right hand lug of the meter socket. This service configuration
is not available for new services.
9.
The source side conduit shall be galvanized rigid steel conduit; Chugach Engineering shall specify size,
quantity and elbow requirements. The customer shall install the specified riser(s) and elbow(s).
10.
Bonding-type locknuts may be substituted for the service conduit grounding busing and jumpers, where all
concentric knockouts are removed. If bonding-type locknuts are used, an insulating bushing is required.
Fiber bushings are acceptable for conduit larger than 2” diameter, if fully threaded onto conduit.
11.
12.
SERVICE STANDARD
UNDERGROUND SERVICE
NON-RESIDENTIAL
(6 Units or Less)
DRAWING NUMBER
SS-8A
Sheet 2 of 2
Page 65
Page 66
Underground Service (More than 6 Units)
1.
Before any service entrance is installed on any building the customer, builder or authorized representative shall obtain
agreement from Chugach as to where the service entrance and multi-metered equipment shall be located. Chugach
meters shall be located on the outside of the building and accessible to Chugach personnel. The service entrance must
be installed as close as possible to existing Chugach facilities.
2.
The customer's service equipment shall conform to the latest revision of the National Electrical Code, Municipal local
amendments to the NEC, and State and Municipal Codes. UL listing is required where applicable.
3.
The customer shall provide a NEMA Type 3R multi-metered enclosure with self contained meter sockets appropriate
to the type of service requested. All non-residential installations shall include meter sockets with a safety socket and
test block. The “house” meter on residential applications does not require manual bypass or a safety socket when
installed in the multi-metered panel.
4.
A main disconnect shall be installed on the source side (line/utility side) of a group of seven or more meter sockets.
The main disconnect may be a fused disconnect switch, or a circuit breaker.
5.
All main service disconnects on the source side (line/utility side) require factory designed and installed sealing and/or
locking provisions for all areas of the enclosure, except access for fuse replacement or switch operation.
6.
The multi-metered enclosure shall have no more than four meter sockets per vertical column for residential
applications and three meter sockets for non-residential applications.
7.
The service termination section of the multi-metered enclosure shall conform to Service Equipment specification
SE-2 or SE-3. A cover independent of any other service equipment shall be removable without disturbing adjacent
panels. Terminal lugs shall be provided. The enclosure cover must be securely fastened to the box and equipped with
tabs or plates for seals and locks. The bottom terminals are reserved for connecting supply side (Chugach) conductors.
8.
Ring style sockets and removable panel covers must be compatible with and not interfere with the tamper proof meter
sealing rings. Ringless sockets are unacceptable.
9.
Network services requires a factory installed 5th jaw or a factory supplied 5th jaw kit to be installed in the 9 o'clock
position.
10.
For 3-phase, 4-wire services supplied from a Delta connected secondary, the phase conductor having the higher voltage
to ground (power leg) shall be identified as different (with red tape) from the other two-phase conductors and shall be
located on the right hand lug of the meter socket. This service configuration is not available for new services.
11.
The source side conduit shall be galvanized rigid steel conduit; Chugach Engineering shall specify size, quantity and
elbow requirements (see SG-7). The customer shall install the riser(s) and elbow(s). The minimum conduit size is 4".
12.
Bonding-type locknuts may be substituted for the service conduit grounding bushing and jumpers, where all concentric
knockouts are removed. If bonding-type locknuts are used, an insulating bushing is required.
13.
All residential and commercial service entrances require an external (located outside the building) lockable service
disconnect switch (see Section 306).
14.
Concrete encased ground electrodes are required for all new buildings in the area where the MOA DPW Building
Safety performs inspections. Multiple rod ground electrodes are required outside of the Building Safety inspection area
(refer to Section 304).
15.
All multiple metering services larger than 1200 amperes require switchboard style service equipment. For all singlephase the maximum service is 800 amperes.
SERVICE STANDARD
UNDERGROUND SERVICE
(More than 6 Units)
DRAWING NUMBER
SS-9
Sheet 2 of 2
Page 67
Page 68
Single-Phase And Three-Phase 201-800 Amps
1.
obtain agreement from Chugach as to where the service entrance and multi-metered equipment shall be located.
All CT enclosures and meter bases shall be located on the outside of the building. The service entrance must be
installed as close as possible to existing Chugach facilities.
2.
The customer's service equipment shall conform to the latest revision of the National Electrical Code, Municipal
local amendments to the NEC, and State and Municipal Codes. UL listing is required where applicable.
3.
The customer shall provide a 6 (single-phase) or 13 terminal transformer rated meter socket with test switch
mounting provisions. The meter socket enclosure shall be a minimum of 12" W x 20" H.
4.
The customer shall provide a NEMA Type 3R current transformer (CT) cabinet with a minimum enclosure size as
shown. For 3-phase installations where the load side (customer) conductors exit from the bottom of the CT cabinet
the width may be reduced to 36 inches. The cabinet must have a three-position (two for single-phase) CT
mounting base (including the neutral termination bar) with a minimum ampere rating of 400 amps. Three-phase
installations rated higher than 400 amps require a minimum CT base rating of 800 amps. The enclosure cover
must be securely fastened to the box and equipped with tabs or plates for seals and locks (5/16 inch shank
padlock). The cover shall be side-hinged, and open and close easily.
5.
Customer shall install rigid steel conduit (1" minimum) between the meter base and the CT cabinet. The conduit
shall be a direct run with no junction boxes. The conduit length shall not exceed 25 feet.
6.
The source side conduit shall be galvanized rigid steel conduit. The size and quantity and elbow requirements
shall be specified by Chugach Engineering and installed by the customer (see SG-7). Install on the opposite side
of the enclosure from the load side (customer) conductor exit.
7.
Chugach will supply and install the current transformers, test switches, meter, meter wiring, and service
conductor.
8.
Bonding-type locknuts may be substituted for the service conduit grounding bushing and jumpers, where all
bushings are acceptable for conduit larger than 2" diameter, if fully threaded onto conduit.
9.
All service entrances require an external (located outside the building) lockable service disconnect switch (a
lockable shunt trip disconnect is acceptable, per Section 306).
10.
Safety performs inspections. Multiple rod ground electrodes are required outside of the Building Safety inspection
area (refer to Section 304).
SERVICE STANDARD
SINGLE-PHASE 201-800 AMPS,
THREE-PHASE 201-800 AMPS
DRAWING NUMBER
SS-10
Sheet 2 of 2
Page 69
Page 70
Three-Phase 801 To 1200 Amps
Before any service entrance is installed on any building, the customer, builder or authorized representative shall obtain
agreement from Chugach as to where the service entrance and multi-metered equipment shall be located. All CT
enclosures and meter bases shall be located on the outside of the building. The service entrance must be installed as close
as possible to existing Chugach facilities.
The customer's service equipment shall conform to the latest revision of the National Electrical Code, Municipal local
amendments to the NEC, and State and Municipal Codes. UL listing is required where applicable.
The customer shall provide a 13 terminal transformer rated meter socket with test switch mounting provisions. The meter
socket enclosure shall be a minimum of 12" W x 20" H.
The customer shall provide a NEMA Type 3R current transformer (CT) cabinet with a minimum enclosure size of 50" W
x 60" H x 14" D. The main compartment minimum dimensions are 36" W x 60" H x 14" D and the side gutter
compartment dimensions are 14" W x 50" H x 14" D with a bushed cable opening to the main compartment. The cabinet
must provide for termination of the line side and load side conductors independent of the CT mounting. The cabinet shall
also include insulated CT support brackets with bus bar drilling to mount CTs that comply with NEMA E1-21. A neutral
termination bar is also required.
The side hinged enclosure cover must be securely fastened to the box and equipped with tabs or plates for seals and locks
(5/16 inch shank padlock), and the door should open and close easily.
Customer shall install rigid steel conduit (1" minimum) between the meter base and the CT cabinet. The conduit shall be
a direct run with no junction boxes. The conduit length shall not exceed 25 feet.
The source side conduit shall be galvanized rigid steel conduit. The size, quantity and elbow requirements shall be
specified by Chugach Engineering Services Division and installed by the customer (see SG-7). Install on the opposite
side of the enclosure from the load side (customer) conductor exit.
Chugach will supply and install the current transformers, test switches, meter, meter wiring and service conductor.
Bonding-type locknuts may be substituted for the service conduit grounding bushing and jumpers, where all concentric
knockouts are removed. If bonding-type locknuts are used, an insulating bushing is required. Fiber bushings are
acceptable if fully threaded onto conduit.
All service entrances require an external (located outside the building) lockable service disconnect switch (a lockable
shunt trip disconnect switch is acceptable, per Section 306).
Concrete encased ground electrodes are required for all new buildings in the area where the MOA DPW Building Safety
performs inspections. Multiple rod ground electrodes are required outside of the Building Safety inspection area (refer to
Section 304).
SERVICE STANDARD
THREE-PHASE
801 AMPS TO 1200 AMPS
DRAWING NUMBER
SS-11
Sheet 2 of 2
Page 71
Page 72
Three-Phase 1201 To 2000 Amps
1.
obtain agreement from Chugach as to where the service entrance and multi-metered equipment shall be located.
All CT enclosures and meter bases shall be located on the outside of the building. The service entrance must be
installed as close as possible to existing Chugach facilities.
2.
3.
The customer shall provide a 13 terminal transformer rated meter socket with test switch mounting provisions.
The meter socket enclosure shall be a minimum of 12" W x 20" H.
4.
The customer shall provide a NEMA Type 3R current transformer (CT) cabinet with a minimum enclosure size
of 64" W x 64" H x 14" D. The main compartment minimum dimensions are 40" W x 64" H x 14" D and the
side gutter compartment dimensions are 24" W x 50" H x 14" D with a bushed cable opening to the main
compartment. The cabinet must provide for termination of the line side and load side conductors independent of
the CT mounting. The bus shall be designed to accept solid bus bar type CTs (multi-leaf CTs are not used) with
NEMA four-hole mounting; a neutral termination bar is also required.
5.
The side hinged enclosure cover must be securely fastened to the box and equipped with tabs or plates for seals
and locks (5/16 inch shank padlock), and the door should open and close easily.
6.
7.
shall be specified by Chugach Engineering and installed by the customer (see SG-7). Install on the opposite side
of the enclosure from the load side (customer) conductor exit.
8.
Chugach will supply and install the current transformers, test switches, meter, meter wiring and service
conductor.
9.
bushings are acceptable if fully threaded onto conduit.
10.
All service entrances require an external (located outside the building) lockable service disconnect switch (a
lockable shunt trip disconnect is acceptable, per Section 306).
11.
Building Safety performs inspections. Multiple rod ground electrodes are required outside of the Building Safety
inspection area (refer to Section 304).
SERVICE STANDARD
THREE-PHASE
1201 - 2000 AMPS
DRAWING NUMBER
SS-12
Sheet 2 of 2
Page 73
Page 74
Three-Phase up to 4000 Amps
1.
Before any service entrance is installed, the customer, builder or authorized representative shall obtain agreement
from Chugach as to where the service entrance and multi-metered equipment shall be located. All switchboard CT
enclosures and meter bases shall be located on the outside of the building. The service entrance must be installed
as close as possible to existing Chugach facilities.
2.
3.
The switchboard configuration is available for lower amperage and multiple metered installations. Refer to
Section 310, SE-5 and the respective service standard for the metering and service equipment requirements.
4.
The customer shall provide a 13 terminal transformer rated meter socket with test switch mounting provisions
(interior panel mount or an exterior meter enclosure – see SE-7). The 12" W x 20" H x 4-5/8” D (minimum)
NEMA 3R meter socket enclosure shall be attached to the outside of the switchboard enclosure or wall mounted
(Note 6).
5.
The customer shall provide a NEMA Type 3R switchboard current transformer (CT) enclosure with a minimum
side pull section (see SE-5). The assembly shall include a removable bus bar link assembly and insulated CT
support brackets to accommodate standard window type current transformers (Section 310). Refer to drawing
(SS-13) for the tabulated minimum dimensions for spacing, clearances and the maximum bus configurations. The
spacing between the phase and neutral bus is in any direction.
6.
If the switchboard is mounted against the building the customer may install rigid steel conduit (1" minimum)
between the optional exterior mount meter socket and the CT compartment. The conduit shall be a direct run with
no junction boxes. The conduit entrance shall be even with or in front of the CT bus. The conduit length shall not
exceed 25 feet.
7.
The conduit type, size, quantity and elbow requirements shall be specified by Chugach Engineering Services
Division and installed by the customer (see SG-7).
8.
conductor.
9.
Conduit grounding bushings and jumpers are required for all rigid steel service conduits.
10.
All commercial service entrances require an external (located outside the building) lockable service disconnect
switch (a lockable shunt trip disconnect is acceptable, per Section 308).
11.
SERVICE STANDARD
UNDERGROUND SERVICE UP TO
4000 AMPS
DRAWING NUMBER
SS-13
Sheet 2 of 2
Page 75
ESR
Page 76
SS-13A, Three-Phase 2001 - 2500 Amps
1.
Before any service entrance is installed, the customer, builder or authorized representative shall obtain agreement
from Chugach as to where the service entrance and multi-metered equipment shall be located. All switchboard CT
enclosures and meter bases shall be located on the outside of the building. The service entrance must be installed
as close as possible to existing Chugach facilities.
2.
3.
The customer shall provide a 13 terminal transformer rated meter socket with test switch mounting provisions
(interior panel mount or an exterior meter enclosure – see SE-7). The 12" W x 20" H x 4-5/8” D (minimum)
NEMA 3R meter socket enclosure shall be attached to the outside of the switchboard enclosure.
4.
The customer shall provide a NEMA Type 3R current transformer (CT) cabinet with a minimum enclosure size of
64" W x 64" H x 14" D. The main compartment minimum dimensions are 40" W x 64" H x 14" D and the side
gutter compartment dimensions are 24" W x 50" H x 14" D with a bushed cable opening to the main
compartment. The cabinet must provide for termination of the line side and load side conductors independent of
the CT mounting. The assembly shall include a removable bus bar link assembly and insulated CT support
brackets to accommodate standard window type current transformers (Section 310).
5.
The side hinged enclosure cover must be securely fastened to the box and equipped with tabs or plates for seals
and locks (5/16 inch shank padlock), and the door should open and close easily.
6.
shall be specified by Chugach Engineering and installed by the customer (see SG-7).
7.
8.
conductor.
9.
bushings are acceptable if fully threaded onto conduit.
10.
All commercial service entrances require an external (located outside the building) lockable service disconnect
switch (a lockable shunt trip disconnect is acceptable, per Section 308).
11.
SERVICE STANDARD
REV. NO.:
0
DATE:
12/08
THREE-PHASE
2001 TO 2500 AMPS
DRAWING NUMBER
SS-13A
Sheet 2 of 2
Page 77
Page 78
Load Center Electrical Service
(Reference SS-14, Underground Service to Load Centers, 200 Amps or Less)
Load centers are defined as metering pedestals for service to Municipal, State and other requesting parties such as ACS,
GCI, and are generally used for the purpose of serving lighting, signal, thaw cable and small specialized single-phase
loads. All requests regarding load center service must be directed to:
5601 Electron Drive
Anchorage, AK 99518-5601
Attn: Line Extension
Phone: (907) 762-4631
1.
To Initiate a Request. A letter is submitted (preferably by the ultimate owning party) requesting approval of the
specific location(s) of a load center. It is noted that a desired location has to be specified and shown on a plan
drawing in addition to the service requirements (voltage and load). Chugach will field check and confirm the
location, or suggest an alternate location. Chugach will send a letter of location approval along with a marked-up
detail map. Locations are only valid for 60 days. After 60 days, the customer will have to resubmit the plans for
re-approval.
2.
General Requirements of Installation
a.
3.
Load centers must be installed within 15 feet of a power source, but no closer than 10 feet. Exceptions
to the 10 to 15 foot distance are only on a case-by-case basis, with additional costs to be paid by
the consumer. Load centers served from an overhead power source must have a minimum 10-foot
radius clearance from overhead power lines.
b.
Location must account for need of accessibility for maintenance or reading by our meter reading
department. The load center shall be located outside of the utility easement. Exception: load centers for
telecommunication utilities that have a joint use agreement with Chugach.
c.
All load centers shall have an engraved laminated plastic sign or a decal identifying the load served
(e.g., street lights, signalization, thaw wire, etc.) and ownership (except privately owned).
d.
All service entrances and meter bases must have a certificate of electrical inspection attached by a State
of Alaska Certified Electrical Inspector or the Municipality’s Building Safety Inspector, and meet
Chugach service standards prior to electrical hookup by Chugach.
Request for Service Connection. After installation of the load center at the approved location, a written request
to Chugach is to be submitted (allowing three to four weeks for energizing) with the following information:
a.
b.
c.
d.
e.
Identification of the load to be served (e.g., street lights, signalization, thaw wire, etc.).
Lot, block, subdivision name.
Voltage and amperage.
Inspection tag number.
The requesting agency confirming who will accept the monthly billing and an authorized signature of
an employee of the firm.
A field check will be made by Chugach to confirm that all conditions for service are met. Assuming there are no
problems with location, etc., a service order will be issued to run a service and set the meter. No other request is
necessary.
Page 79
Page 80
Load Center Electrical Service
(Reference SS-15, Overhead Service to Load Centers, 200 Amps or Less)
Load centers are defined as metering pedestals for service to Municipal, State and other requesting parties such as ACS,
GCI and are generally used for the purpose of serving lighting, signal, thaw cable and small specialized single-phase
loads. All requests regarding load center service must be directed to:
5601 Electron Drive
Anchorage, AK 99518-5601
Attn: Line Extension
Phone: (907) 762-4631
1.
To Initiate a Request. A letter is submitted (preferably by the ultimate owning party) requesting approval of
the specific location(s) of a load center. It is noted that a desired location has to be specified and shown on a
plan drawing in addition to the service requirements (voltage and load). Chugach will field check and confirm
the location, or suggest an alternate location. Chugach will send a letter of location approval along with a
marked-up detail map. Locations are only valid for 60 days. After 60 days, the customer will have to resubmit
the plans for re-approval.
2.
General Requirements of Installation
3.
a.
Load centers must be installed within 15 feet of a power source, but no closer than 10 feet. Exceptions
to the 10 to 15 foot distance are only on a case-by-case basis, with additional costs to be paid by
the consumer. Load centers served from an overhead power source must have a minimum 10-foot
radius clearance from overhead power lines.
b.
Location must account for need of accessibility for maintenance or reading by our meter reading
department. The load center shall be located outside of the utility easement. Exception: load centers
for telecommunication utilities that have a joint use agreement with Chugach).
c.
All load centers shall have an engraved laminated plastic sign or a decal identifying the load served
(e.g., street lights, signalization, thaw wire, etc.).
d.
All service entrances and meter bases must have a certificate of electrical inspection attached by a
State of Alaska Certified Electrical Inspector or the Municipality’s Building Safety Inspector, and meet
Chugach service standards prior to electrical hookup by Chugach.
Request for Service Connection. After installation of the load center at the approved location, a written
request to Chugach is to be submitted (allowing three to four weeks for energizing) with the following
information:
a)
b)
c)
d)
e)
Identification of the load to be served (e.g., street lights, signalization, thaw wire, etc.).
Lot, block, subdivision name.
Voltage and amperage.
Inspection tag number.
The requesting agency confirming who will accept the monthly billing and an authorized signature of
an employee of the firm.
Page 81
Page 82
RESIDENTIAL MULTI-METERING - 6 METER MAXIMUM
1.
Terminals for supply conductors for equipment rated 200 amps or less may be mechanical connector blocks
that accept 2 – 4/0 AWG.
2.
Two ½ inch steel bolts shall be provided for connecting all supply side conductors on equipment rated 201
amps and above. One set is required for equipment rated up to 400 amps, two sets for equipment rated 401 to
600 amps. See service equipment specification SE-4.
3.
Line side terminals shall be secured to prevent rotation or misalignment when the cables are installed.
4.
A sealable terminal compartment cover with two lifting handles is required. Refer to Section 305 for sealing
requirements. The maximum area of the cover is nine square feet. The cover shall be independent of other
equipment and removable without disturbing adjacent panels.
5.
The minimum terminal compartment width is measured between the right and left side return flanges.
6.
The minimum terminal height is measured from the lowest terminal bolt to the floor of the enclosure.
7.
The neutral terminating position shall be identified. A bonding screw or jumper shall be provided if the
neutral terminal is insulated from the enclosure. For equipment rated up to 200A the neutral termination
height may be reduced to 8-1/2 inches.
8.
Load side (customer) grounding connections are permitted within the pull box if they do not interfere with the
termination of the supply side service conductors or do not reduce the specified clearances.
9.
Where supply side conductors cross over horizontal bus, the bus shall be fully insulated or a rigid barrier shall
be installed between.
SERVICE EQUIPMENT
RESIDENTIAL MULTI-METER
6 METER MAXIMUM
DRAWING NUMBER
SE-1
Sheet 2 of 2
Page 83
Page 84
WALL-MOUNTED PULL BOX WITH TERMINAL BUS
1.
Terminals for supply conductors for equipment rated 200 amps or less may be mechanical connector blocks that
accept 2 – 4/0 AWG.
2.
Two ½ inch steel bolts shall be provided for connecting all supply side conductors on equipment rated 201 amps
and above. One set is required for equipment rated up to 400 amps, two sets for equipment rated 401 to 800 amps
and three sets for equipment rated 801 to 1200 amps. See service equipment specification SE-4.
3.
Line and load side terminals shall be secured to prevent rotation or misalignment when the cables are installed.
4.
Sealable or lockable removable pull box covers with two lifting handles are required. The maximum area of the
cover is nine square feet. Refer to Section 305 for sealing requirements.
5.
The minimum pull box access width is measured between the right and left side return flanges.
6.
7.
The bottom terminals and the portion of the pull box below these terminals are reserved for supply side
conductors only.
8.
Load side (customer) grounding connections are permitted within the pull box if they do not interfere with the
termination of the supply side service conductors or do not reduce the specified clearances.
SERVICE EQUIPMENT
WALL-MOUNTED PULL BOX
WITH TERMINAL BUS
DRAWING NUMBER
SE-2
Sheet 2 of 2
Page 85
Page 86
COMBINATION DISCONNECT AND TERMINAL BUS
1.
A minimum vertical clearance of 3 inches is required between the centerline of the top terminal bolt to any
obstruction.
2.
Two ½ inch steel bolts shall be provided for connecting all supply side conductors. Two sets for equipment
rated up to 800 amps and three sets for equipment rated 801 to 1200 amps. See service equipment specification
SE-4.
3.
Line and load side terminals shall be secured to prevent rotation or misalignment when the cables are installed.
4.
Sealable or lockable removable supply side compartment cover with two lifting handles is required. The
maximum area of the cover is nine square feet. Refer to Section 305 for sealing requirements. The cover shall
be independent of other equipment and removable without disturbing adjacent panels.
5.
The main disconnect cover shall be sealable; the fuse access doors shall not be sealable.
6.
7.
The bottom terminals and the supply side compartment are reserved for supply side conductors only.
8.
An insulated rigid barrier is required to separate the supply side and main disconnect compartments.
9.
The minimum enclosure width is measured between the right and left side return flanges.
10.
The grounding electrode conductor may be installed in a fully enclosed, factory installed wireway located in
either back corner of the supply side compartment. The raceway shall not interfere with the termination of the
supply side service conductors or reduce the specified clearances.
11.
The maximum ampere rating for the combination disconnect and terminal bus is 1200 amps. The maximum
rating for single-phase applications is 800 amps. (New language.)
SERVICE EQUIPMENT
COMBINATION DISCONNECT
AND TERMINAL BUS
DRAWING NUMBER
SE-3
Sheet 2 of 2
Page 87
Page 88
TERMINAL BUS DETAILS
1.
Terminals for supply conductors for equipment rated 200 amps or less may be mechanical connector blocks
that accept 2-4/0 AWG.
2.
Two ½ inch steel bolts shall be provided for connecting all supply side conductors on equipment rated 201
amps and above. One set is required for equipment rated up to 400 amps, two sets for equipment rated 401 to
800 amps and three sets for equipment rated 801 to 1200 amps (see Figure 1).
3.
As an exception, edgewise-oriented terminal bus mounting may consist of 9/16 inch holes having the same
spacing as specified for the ½ inch bolts, as stated in Note 2. The unobstructed working space shall be provided
on both sides of the terminal bus (see Figure 3)
4.
Each terminal bolt shall include a spring washer, flat washer and a nut. The spring washer may be either a
Bellville or a split ring type. All parts shall be plated to prevent corrosion. Where Bellville washers are
supplied, the manufacturer shall provide a label with the required torque.
5.
Terminal bolts must be secured in place (the stud will not turn, back out, or loosen when applying full torque to
install or remove the connector lugs to the terminals). Terminating bolts shall not be used to secure the terminal
bus in place.
6.
The terminal mounting area (see Figure 4) may be reduced from 1-1/2 inches to 1 inch when measured to the
back wall of the terminal compartment and to any fully insulated horizontal bus behind the terminal bus.
7.
The neutral terminal clearances may be reduced to 1-inch from any grounded surface and to fully insulated bus.
8.
Each terminal shall have an unobstructed workspace, accessible from the front of the access compartment
opening, as shown in Figure 4. For terminals with bolts facing the access opening as shown in Figure 2, the
required 1-1/2 inch side clearance (bus to access opening return flange) may be reduced to ¾ inch.
9.
The neutral terminal shall be permanently labeled in clearly visible block lettering reading either “NEUTRAL”
or “N”.
10.
Uninsulated bus of different potential is not permitted below or behind any terminal position as viewed from
the front of the access compartment. If cross-bus is installed below or behind any terminal positions, the crossbus shall be fully insulated or an insulated barrier shall be provided.
11.
For switchboard pull sections, the minimum clearance from any energized part to a removable access cover
shall be 4 inches. This clearance may be reduced to 1-1/2 inches when the manufacturer provides a safety
barrier. The safety barrier shall be constructed of a rigid insulating material, resistant to damage by impact,
with a minimum thickness of 1/8 inch.
SERVICE EQUIPMENT
TERMINAL BUS DETAILS
DRAWING NUMBER
SE-4
Sheet 2 of 2
Page 89
Page 90
SWITCHBOARD STYLE 201-4000 AMPS
1.
This is a standard configuration for all services 2001 – 4000 amperes. It is an optional configuration for CT
metered installations and multiple self-contained metered installations 201-2000 amperes.
2.
The customer shall furnish and install a standard switchboard service section with CT compartment(s) or
multiple self-contained metering (see SE-6 and SE-7).
3.
Bus bars or conductors may extend from the pull section into switchboard service sections rated up to 800
amps. Bus bars are required when the switchboard rating exceeds 800 amps or for multiple metering
installations.
4.
When the switchboard is supplied from side gutter pull section, the bus or cable shall enter through the side or
back of the sealable section above the CT compartment, or by horizontal cross-bussing in the rear of the CT
compartment.
5.
When horizontal cross-bussing exits the switchboard pull section below the terminating facilities the lowest
cross-bus unit and the transition supplying the cross-bus units shall not be less than two feet above the bottom
of the enclosure or more than eight inches from the back of the enclosure.
6.
The minimum opening dimension (W) is measured between the left and right side return flanges.
7.
All switchboard installations shall be accessible from the front only. All line connections are to be made from
the front of the switchboard.
8.
Terminating compartments shall have cover panels that are removable, sealable, provided with two lift
handles, and limited to a maximum area of nine square feet. Sealing provisions shall be a minimum of two
drilled stud and wing nut assemblies on opposite sides of each cover panel.
9.
CT compartments shall have hinged front cover panels that are lockable (accept a 5/16 inch shank padlock).
10.
The ground bus shall be located at the rear of the terminating enclosure (see SE-2 for separate terminating
enclosure configurations).
SERVICE EQUIPMENT
SWITCHBOARD STYLE
201-4000 AMPS
DRAWING NUMBER
SE-5
Sheet 2 of 2
Page 91
Page 92
SWITCHBOARD - SELF-CONTAINED METER
1. The following requirements for this application are in addition to those outlined in Sections 300.
2. All multiple metering switchboard applications require that the meter socket panels be mounted within the
interior of the switchboard cabinet (see SG-6 Fig 2). Multiple Meter panels shall be removed with a maximum of
two meters per panel. Meter panels shall be provided with a sealing ring for each meter socket and each meter
socket shall be rigidly mounted on a support and attached to the meter panel.
3. Meter conductors shall not pass through adjacent metering compartments except in enclosed wireways. To ensure
proper identification of wires in factory wired equipment, metered wires (except in the by-pass compartment)
shall be bundled or a barrier used to separate them from unmetered wiring. Barriers are not required where the
unmetered bus is installed.
4. Test block by-pass with rigid insulating barriers shall be furnished, installed and wired or bussed to the each
meter socket by the manufacturer. Connection sequence is line-load from left to right.
5. The test block by-pass cover shall be sealable and fitted with a lifting handle. All panels exceeding 16 inches in
width require two lifting handles.
6. When a neutral is required for metering or testing, an insulated neutral terminal shall be provided behind each test
block by-pass cover panel. The terminal shall be readily accessible when the cover panel is removed and shall be
individually connected to the neutral bus with a No 8 AWG (minimum) copper wire.
7. A full width factory installed insulating barrier shall be located at the bottom of each test block by-pass
compartment. A full width and depth barrier shall be located below the bottom of the test block by-pass
compartment and above the load terminals of the meter disconnect devices. If a factory installed rear load side
wireway is provided the barrier shall extend to the wireway. Ventilation openings shall not exceed a maximum
diameter of 3/8 inches. A slot in the barrier provided for the load side conductors supplied from the test block bypass compartment shall be 1-1/2 inch in depth (maximum) and may extend to the width of the meter disconnect
device. The slot may not be located in the front 6 inches of the test block by-pass compartment barrier.
8. For three-phase 4-wire connect the 7th jaw of the meter socket to the body of the neutral lug with a white No. 12
AWG copper wire.
9. For three-phase 3-wire install bus to connect the line and load poles together at the top of the center test block bypass and connect the 5th jaw of the meter socket to this bus with No 12 AWG copper wire. The color used to
identify the wire shall not be white, grey, green, or orange.
10. For single-phase 3-wire omit the center test by-pass block. For 120/208 V connect the 5th jaw of the meter socket
to the body of the neutral lug with a white No 12 AWG copper wire.
SERVICE EQUIPMENT
SWITCHBOARD
SELF-CONTAINED METER
DRAWING NUMBER
SE-6
Sheet 2 of 2
Page 93
Page 94
SWITCHBOARD – CT METERED
1. The following requirements for this application are in addition to those outlined in Section 300.
2. All multiple CT metered applications require that the meter sockets be hinged panel mounted within the interior
of the switchboard cabinet (see SG-6 Fig 1). Single CT applications may be interior hinged panel mount or a CT
rated meter socket may be mounted on the outside of the switchboard enclosure or wall mounted adjacent to the
cabinet (when location permits).
3. Hinged meter panels require stops to prevent the panel to swing past the front surface and into the CT
compartment. Hinges are to be field interchangeable, left or right. For clevis or removable type hinges the pin
shall be removable from the top. An interchangeable handle is required for the unhinged end.
4. All removable or hinged panels enclosing unmetered bus or cable shall be sealable. Hinged meter panels shall be
lockable and accept a 5/16-inch shackle.
5. The attached drawing with the hinged panel filler panel configuration is for illustration purposes (filler panels are
not a requirement of this specification). Refer to SE-5 for switchboard configuration limits and dimensions.
6. The hinged meter panel shall be constructed of 12-gauge (minimum) steel and shall be hinged at the test switch
side. The panel shall be furnished with a meter socket, sealing ring and slotted opening and removable plate for
the installation of a secondary test switch. The slotted opening and removable plate edges shall be smooth to
prevent damage to the meter wiring (attachment screws shall not protrude through the face of the panel). The
meter socket shall be designed for connections to the back.
7. Where filler panels are used they shall be hinged and sealable. Stops are required to prevent inward swinging.
8. The CT rated meter socket shall accommodate a covered test switch with sealing or locking provision. The test
switch mounting provisions shall accept a test switch with a depth of (from rear edge of test switch base to top of
sealing stud) no less than 3-3/8”. The meter socket shall accept a 10-pole test switch with a base that is 9-1/2”
wide.
9. For CT compartment requirements refer to the respective service standard for the application (SS-10, 11, 12 or
13). The compartment dimensions may be reduced if the service section is supplied from horizontal crossbussing or bus duct (CT minimum clearance dimensions shall be maintained).
10. Refer to SG-6 for clearance and access compartment requirements.
SERVICE EQUIPMENT
SWITCHBOARD
CT METERED
DRAWING NUMBER
SE-7
Sheet 2 of 2
Page 95
Page 96
COMMERCIAL LOAD CENTER - PADMOUNTED
1. The following requirements for this application are in addition to those outlined in Sections 300 and SS-14.
2. When the meter socket is enclosed the cover shall be hinged to allow the top and front to be rotated as one unit
to expose face of the meter panel. The cover shall be equipped with a lifting handle, a latch to secure in an open
position, be sealable and lockable (with a 5/16 inch shackle padlock). The cover shall include a viewing window
and a demand reset cover. The reset cover shall be sealable and lockable (with a 5/16 inch shackle padlock).
Ringless sockets are not accepted.
3. When the metering compartment side panels are fixed in place a safety socket is required and the “A” dimension
applies to the minimum compartment width. All 480V installations require a safety socket.
4. Test by-pass blocks with rigid barriers shall be furnished, installed and wired or bussed to the meter socket by
the manufacturer. The connection sequence shall be LINE-LOAD from the left to the right and clearly identified
by ¾” high (minimum) labeling.
5. Test by-pass compartment covers shall be sealable and provided with a lifting handle. Two handles are required
when the covers are more than sixteen inches in width.
6. Test by-pass compartments shall provide three inches vertical clearance measured form the upper test connector
stud to the upper compartment access opening and three inches from the center of the cable terminal screw to
the lower compartment access opening. 1-1/1 inches of side clearance is required from the rigid insulating
barriers to the compartment and 1 inch to the compartment access opening.
7. When a neutral is required for metering or testing, an insulated neutral terminal shall be provided behind the test
by-pass access cover. The terminal shall be readily available when the cover is removed and shall be connected
to the neutral terminal in the pull section by a No 8 AWG (minimum) copper wire.
8. The supply side (utility) terminal compartment shall have a protective barrier (16-gauge minimum) to provide
separation to the customer access compartment(s). The terminal compartment cover shall include a lifting
handle and be sealable and lockable (with a 5/16 inch shackle padlock).
9. Supply side terminals shall accept No 2 AWG through 350-kcmil service conductor (see SE-4). Insulated
conductor or bus is required between the supply side service terminals and the test by-pass terminals.
SERVICE EQUIPMENT
COMMERCIAL
LOAD CENTER PADMOUNTED
DRAWING NUMBER
SE-8
Sheet 2 of 2
Page 97
Page 98
Switch Requirements For Standby Generators
(Reference SG-1, Typical Arrangement for Standby Generators, Alternatives 1 and 2)
When incorporating a standby electric generator into your electrical system, installation must
conform to the provisions of Article 702, Optional Standby Systems, of the National Electric Code.
A double-pole, double-throw transfer switch must be installed.
It is Chugach's recommendation that a licensed electrician, for safety reasons as well as proper
application, install the transfer switch. These installations require permit and inspection by the
Municipality of Anchorage.
Chugach Service Standard SG-1 shows two alternative diagrams showing arrangements for wiring in
your transfer switch.
Alternative 1 requires that the transfer switch be the same size as the main disconnect switch or
breaker located adjacent to the meter. This transfer switch arrangement is capable of carrying all
existing loads under normal conditions. This means that the only limiting factor on the amount of
electrical equipment to run simultaneously under emergency conditions is the size of the generator
installed. Under emergency conditions the homeowner must turn off all circuit breakers in the
distribution panel except for those circuits that feed the emergency load.
Alternative 2 allows selected electrical loads to be separated from the main distribution panel in the
house and wired into a sub-distribution panel. This reduces the size of the required transfer switch
and may reduce total costs. The limitation is that the total building cannot be incorporated into the
standby generator circuit.
Refer to Emergency Electric Generators Advice and Installation UAF Cooperative Extension
Service.
By consulting with your electrician, an electrical plan can be made which will determine what
equipment may be operated at the same time. This information will be used to select the proper size
of generator (rate in wattage).
A double-pole, double-throw transfer switch may be obtained from electrical supply houses.
Generator transfer switches without a visible break require prior approval from Chugach. Contact
the Standards Engineer at 762-4611.
See Chugach Service Guide SG-1, Typical Arrangement for Standby Generators, Alternatives 1 and
2.
Page 99
Page 100
Combination Service - CT and Self-Contained Metering
1. The following guidelines are supplemental to the requirements outlined in the respective self-contained and CT
metered service standards that are combined under this assembly.
2. For the self-contained metered portion of the installation, refer to SS-8A and 9. For the CT metered portion refer
to SS-10 and 11. These installations are limited to a total rating of 800 amps for single-phase and 1200 amps for
three-phase.
3. The customer shall furnish and install a terminal enclosure that is rated for the total installation (see SE-2). The
supply side (utility) terminals provided shall be configured for the total installation in conformance with SE-4.
4. A service disconnect is required for the multiple metering where the total number of disconnects of the total
installation are more than six.
SERVICE GUIDE
COMBINATION SERVICE
CT and SELF-CONTAINED METERING
DRAWING NUMBER
SG-2
Sheet 2 of 2
Page 101
SERVICE GUIDE PADMOUNT TRANSFORMER CLEARANCE
Ten feet of clearance in front of the transformer is required for safe worker access.
Six feet of clearance on the remaining sides of the transformer is required for maintenance. The clearance to noncombustible structures may be decreased to three-feet with approval from Chugach Engineering.
The transformer location must be equipment accessible (to allow a 37 foot boom truck access to lift the transformer).
If the transformer is in a location where it may be exposed to damage, Chugach will place protective bollards 1-foot
diagonally from the corners of the transformer pad foundation.
Structure/Object
Gas meter
Door
Window
Horizontal
Vertical
Fire Escape/Stairs
Fire Hydrant
Fuel Tank
Distance
3 ft
6 ft
5
10
6
6
15
ft
ft
ft
ft
ft
The maximum distance from the transformer to the service entrance equipment is 60 feet for service entrances larger
than 800A.
Disclaimer: The above information is for guidance only. Clearances must meet municipal, state and federal
requirements, where applicable.
SERVICE GUIDE
PADMOUNT TRANSFORMER
CLEARANCE
DRAWING NUMBER
SG-3
Sheet 1 of 1
Page 102
Page 103
Page 104
METERING AND SERVICE ENTRANCE EQUIPMENT – WORKING SPACE AND
CLEARANCE
1. This guide supplements the requirements outlined in Sections 300.
2. A level standing and working surface shall be provided and maintained in front of each metering installation. A
clear and unobstructed working space shall be provided above this surface
3. The working space around the meter socket shall include a minimum of 10 inches from the centerline of the
meter socket opening to the nearest sidewall or other obstruction. This minimum 10-inch side clearance
requirement applies to both sides of the meter socket.
4. The working space above the meter socket shall include a minimum of 9 inches from the centerline of the meter
socket opening to any obstruction above the meter.
5. The 36-inch width is the minimum requirement; for CT and multi-metered metered applications the required
workspace includes the full width of each utility side access compartment (terminal and CT compartments).
6. The working space shall extend at least 36 inches out from the front panel of the meter socket (s).
7. The minimum height of the working space shall be equal to the height of the service equipment but no less than
78 inches
SERVICE GUIDE
SERVICE EQUIPMENT
WORKING SPACE
AND CLEARANCE
DRAWING NUMBER
SG-4
Sheet 2 of 2
Page 105
Page 106
CLEARANCE FOR RESIDENTIAL MULTIPLE METERING
1. This guide supplements the requirements outlined in Sections 300
2. The working space around the meter socket shall include a minimum of 10 inches from the centerline of the
meter socket opening to the nearest sidewall or other obstruction. The minimum side clearance requirement
applies to either side of the meter socket. For obstructions extending 11” or less from the surface of the meter
panel refer to side clearance dimension ‘B’ in the table (these reduced minimum side clearances only apply to one
side the meter socket(s) per installation). Dimension ‘B’ shall be increased by the amount that the service
disconnect door (including the operating handle) reduces the clearance, when opened 90 degrees
3. The mounting height for multiple metering (installations of more than six) shall be between 33 and 75 inches
above the finished grade or standing surface immediately in front of the meters. The mounting height reference is
the centerline of the meter socket.
SERVICE GUIDE
CLEARANCE - RESIDENTIAL
MULTIPLE METERING
DRAWING NUMBER
SG-5
Sheet 2 of 2
Page 107
Page 108
CLEARANCE FOR SWITCHBOARD METERING – INTERIOR MOUNT
1. Hinged meter panels shall be capable of opening 90 degrees with the meter and test switch assembly in place
and provide the following clearances to any obstruction: 11 inches at the meter socket and 4 inches at the test
switch slotted opening.
2. Meter panels, either socket or blank, shall not be hinged to a hinged filler panel. Non-hinged filler panels shall
not extend into the CT compartment access opening
3. Supply side compartment access doors (metering and terminating sections) shall be equipped with a temporary
locking device to secure doors in an open position at 90 degrees and more. The access doors shall be secured in
the closed position with a single handle operated latching system. When provided with a locking means, each
door or set of doors require an approved double locking provision that accepts a 5/16 inch shackle padlock and
allows independent access by Chugach and the customer.
SERVICE GUIDE
CLEARANCE SWITCHBOARD
METERING INTERIOR MOUNTED
DRAWING NUMBER
SG-6
Sheet 2 of 2
Page 109
CONDUIT GUIDE
Size and Number of Conduits for Typical Applications
Single-phase, 3-wire, 100 amps to 200amps, one each, 2-inch diameter conduit
Single-phase, 3-wire, 201 amps to 800 amps, one each, 4-inch diameter conduit
Three-phase, 4-wire, 100 amps, one each, 2-inch diameter conduit
Three-phase, 4-wire, 200 amps, one each, 4-inch diameter conduit
Three-phase, 4-wire, 201 amps to 400 amps, one each 4-inch diameter conduit
Three-phase, 4-wire, 401 amps to 800 amps, two each, 4-inch diameter conduits
Three-phase, 4-wire, 801 amps to 1200 amps, three each, 4-inch diameter conduits
Three-phase, 4-wire, 1201 amps to 1600 amps, four each, 4-inch diameter conduits
Three-phase, 4-wire, 1601 amps to 2000 amps, five each, 4-inch diameter conduits
Three-phase, 4-wire, 2001 amps to 3000 amps, six each, 4-inch diameter conduits
Conduit Elbows for Typical Applications
The minimum radius elbow is 24” for typical installations
These are general guidelines only; consult with Chugach Engineering for specific details
regarding the size and number of conduits required for a particular installation.
SERVICE GUIDE
CONDUIT – SERVICE RISER
DRAWING NUMBER
SG-7
Sheet 1 of 2
Page 110
CONDUIT – SERVICE RISER GUIDE
1. These are general guidelines only; consult with Chugach Engineering for specific details with regard to the size
and number of conduit required for a particular installation. Chugach Engineering may specify different sizes or
quantities of conduit than shown in this guide.
2. All residential underground services (200 amps or less) attached to the structure shall use 2” liquid tight flexible
metallic conduit on the service riser. The use of 2” liquid tight flexible conduit is acceptable for residential
multiple meter installations through 400A (SS-8) when the service length permits. The 9-foot section of conduit
shall be formed into a 24” radius (minimum) sweep to horizontal at the specified depth.
3. Supply side compartment access doors (metering and terminating sections) shall be equipped with a temporary
locking device to secure doors in an open position at 90 degrees and more. The access doors shall be secured in
the closed position with a single handle operated latching system. When provided with a locking means, each
door or set of doors require an approved double locking provision that accepts a 5/16 inch shackle padlock and
allows independent access by Chugach and the customer.
4. All non-residential applications and remote meter installations rated 200 amps or less shall use 2” galvanized
rigid steel conduit.
5. All underground services rated 201 amps and above are required to use galvanized rigid steel conduit.
6. All overhead services shall use galvanized rigid steel conduit (minimum size is 2”). Where the conduit riser
length exceeds 10 feet the coupling and the shorter conduit section shall be placed nearest to the service
equipment.
7. The conduit connecting the CT meter socket and CT compartment shall be galvanized rigid steel (1” minimum
diameter). It shall be a direct run with no junction boxes or LB fittings.
SERVICE GUIDE
CONDUIT – SERVICE RISER
DRAWING NUMBER
SG-7
Sheet 2 of 2
Page 111
Page 112
Appendix
Appendix
Meter Socket Quick Reference Guide - Self-Contained
Single-Phase
For all Underground Residential Services rated up to 200 amps
4-Terminal, Single-Phase, 3-Wire, 120/240 Volt, 200 Amp Rated
Cooper B-Line U2M2R (residential only)
Cooper B-Line U2M11R (residential only)
Cutler-Hammer MBEB200BTS (residential only)
Cutler-Hammer MBE24L200BTS (residential only)
Cutler-Hammer MBE48B200BTS (residential only)
Cutler-Hammer MBE88B200BTS (residential only)
General Electric TSL420SCU (residential only)
Milbank U3584-O-200UG (residential only)
Siemens MM0406L1200GA (residential only)
Square D SC816D200C (residential only)
Thomas & Betts TBMB20SN (residential only)
Thomas & Betts TBMB20SLBN (residential only)
Notes:
1. All residential combination meter panels installed in Chugach’s service area shall meet the
requirements of SS-1 or shall be reviewed and accepted in writing by Chugach. The products listed
above met this service standard, or were reviewed and accepted at the time of publication of these
Electric Service Requirements.
2. Chugach does not specify short circuit current ratings for meter disconnect or service disconnect
devices. It is the responsibility of the designer and/or installer of the equipment to evaluate and
install a device with an AIC rating appropriate for the circumstances.
3. The catalog numbers listed above typically represent the lowest available AIC rating for a particular
product.
Page 113
Page 114
Glossary
Glossary
ACCESSIBLE - Admitting close approach: not guarded by dogs, obstacles, locked doors, elevation, or
other effective means and having appropriate working clearances for the equipment involved.
ACCESS OPENING - The minimum opening of a pull section or termination enclosure required for
utility work access. This opening is measured from the edge of flange to the edge of flange; not from
sidewall to sidewall.
AEIC - Association of Edison Illuminating Companies.
AMPACITY - The current expressed in amperes that an electric conductor can carry continuously under
specified conditions of use without exceeding its temperature rating.
ANSI - American National Standards Institute.
AUTOMATIC BYPASS - A device within a meter socket that automatically operates upon removal of
the meter from the socket allowing current to flow from the line side socket clips to the load side socket
clips with the meter removed from the socket.
BONDING (BONDED) - The permanent joining of metallic parts to form an electrically conductive
path, which will assure electrical continuity and the capacity to conduct safely any current likely to be
imposed.
BREAKER - Customer’s circuit breaker. See CIRCUIT BREAKER.
BUS, LAMINATED - More than one bus bar per phase, connected in parallel.
BUS, LIVE - Bus bars, which are normally energized.
BUS, REMOVABLE LINK - Used in a CT compartment to link the line and load bus together. This
removable section of bus is designed to allow the installation of CT’s.
BUS STUBS - The part of a bus bar reserved for the termination of conductors.
BUSHINGS - Plastic or nylon rings that attach to the ends of conduit to protect the electrical cable from
sharp edges.
BYPASS - A device which shunts current around the meter socket so the meter can be removed without
interrupting service to the customer. Also see TEST-BLOCK/BYPASS.
CIRCUIT BREAKER - A device designed to open and close a circuit by non-automatic means and to
open the circuit automatically on a predetermined over-current without damage to itself when properly
applied within its rating.
CLEARANCE, BARREL OF PROXIMITY - The clearance described by an imaginary barrel around a
termination facility measured from the sides, top, bottom, front, and back of the terminating surface to a
grounded surface or other terminating facility. Includes the studs or bolts when in place.
CLEARANCE, RADIAL - The clearance required around a termination facility measured from the
sides, top, and bottom of the termination surface area. See CLEARANCE, BARREL OF PROXIMITY.
CONDUCTORS, LINE SIDE (SUPPLY SIDE) - See CONDUCTORS, UN-METERED.
CONDUCTORS, LOAD SIDE - See CONDUCTORS, METERED.
Page 115
Glossary
CONDUCTORS, METERED - Conductors transmitting electrical energy that has been previously
recorded by the utility’s billing meter.
CONDUCTORS, UN-METERED - Conductors transmitting electrical energy that has not been
recorded by the utility’s billing meter.
CONDUIT - A listed or approved pipe with a smooth interior surface to permit easy drawing in of
electrical conductors.
CT - An acronym for current transformer. The term CT and the phrase “current transformer” are
synonymous terms. See CURRENT TRANSFORMER.
CT RATED METER - An electricity meter used in conjunction with current transformers to accurately
measure and register all the electrical energy consumed in the circuit to which it is connected.
CURRENT TRANSFORMER - An instrument transformer designed for the measurement of current. It
is used to reduce primary current by a known ratio to within the range of a transformer rated kilowatthour
meter. Current transformers are often referred to by the acronym CT.
CUSTOMER - Any person, persons, corporation, etc. or their designated representative, for whom the
electric service and meter installation is provided.
DRIP LOOP - A downward loop in the customer’s conductors near where the customer’s conductors
attach to Chugach’s conductors to prevent water from entering the service mast at the weatherhead.
DISCONNECTING MEANS - A device or group of devices or other means by which the conductors of
a circuit can be disconnected from their source of supply.
EASEMENT - Refer to definition in Section 207.
EEI - Edison Electric Institute.
EUSERC - Electric Utility Service Equipment Requirements Committee, an organization composed of
utility representatives from the western region of the United States that works to promote uniform electric
service requirements and the design and engineering of metering and service equipment.
FILLER PANEL - The panel used on a switchboard in conjunction with a meter panel to effect a cover
over the total instrument transformer enclosure opening.
GROUND (GROUNDED) - As used in this book, it means intentionally connected to earth through a
ground connection or connections of sufficiently low impedance and having sufficient current-carrying
capacity to prevent the buildup of voltages that may result in undue hazards to connected equipment or to
persons.
GROUNDING LUG - Lug designed for terminating the customer’s grounding wire.
GUYING - Cables or braces used to relieve the strain of overhead conductors on masts and poles.
HANDLES, LIFTING - Handles attached to meter and service equipment panels to aid in the panel
removal/replacement, and open/close operation. They are to be non-folding grasp type designed to
provide full secure attachment and the ability to withstand stress of a 75 pound load.
HIGH LEG - In a three-phase, 4-wire delta service, the phase conductor having a higher voltage to
ground than the other two phases is known as the “high leg”. It is sometimes referred to as the “wild leg”.
IEEE - Institute of Electrical and Electronics Engineers.
Page 116
Glossary
INSTRUMENT TRANSFORMER - A transformer that reproduces in its secondary circuit a definite
and known portion of the current or voltage of its primary circuit, with the phase relationship substantially
preserved.
INSTRUMENT TRANSFORMER COMPARTMENT - See TRANSFORMER COMPARTMENT.
INSULATING BARRIER - A barrier of non-conductive material within an enclosure, compartment,
switchboard, etc., that effectively prevents electrical energy within conductors or bus bars from
accidentally contacting ground or neutral or contacting phase to phase in an uncontrolled manner.
LINE SIDE CONDUCTOR - a service conductor delivering electrical power to the customer, which has
not been recorded by the utility’s meter.
LOAD SIDE CONDUCTOR - any conductor delivering electrical power to the customer, which has
been recorded by the utility’s meter.
LOCKABLE - Accepting a padlock with a shackle diameter of 5/16 inch.
LUGS - Used to terminate cable conductors on termination facilities.
MAIN SERVICE DISCONNECT - A circuit breaker, fused switch, or other approved disconnecting
means installed on the supply (line) side of an installation of more than six meter sockets.
METER DISCONNECT - A circuit breaker, fused switch, or other approved disconnecting means with
over-current protection that controls all of, and only the energy registered by its related meter.
METER JAW - A spring-loaded receptacle inside a meter socket that captures the terminals (blades) of a
meter and connects the meter terminals to the service conductors.
METER HEIGHT - Meter height is the distance measured from the center axis of the installed meter to
the standing surface immediately in front of the meter.
METER PANEL - Panel used exclusively for mounting meter sockets and associated equipment.
METER SEQUENCE - The sequential relation between the service switch and the billing meter in a
series arrangement. The term NEW SEQUENCE means a meter-switch-fuse sequence.
METER SOCKET - The mounting device consisting of meter jaws, connectors, and enclosure for
accommodating socket-type meters.
MoA - Municipality of Anchorage.
MUNICIPAL UNDERGROUND SURCHARGE AREA – All of the Anchorage Municipality from the
Anchorage Bowl to and including Girdwood where a surcharge is collected to convert overhead electric
power facilities to underground.
MULTIPLE METERING - Prefabricated service entrance equipment consisting of a service termination
section and two or more meter sockets.
NEC - Most recent State adopted publication of the National Electrical Code.
NEMA - National Electrical Manufacturers Association.
NESC - Most recent State adopted publication of the National Electric Safety Code.
NETWORK - Single-phase load served by a three-phase 4-wire wye connected power source.
Page 117
Glossary
NEUTRAL - The grounded conductor in a single-phase 3-wire, or three-phase, 4-wire system.
PLUMB - In this case referring to the meter socket enclosure. To have the sides and front of the meter
socket enclosure perfectly vertical from both the front and side views.
POTENTIAL TRANSFORMER (PT) - see VOLTAGE TRANSFORMER (VT).
POWER FACTOR – The ratio of active power to apparent power (watts divided by volt-amperes).
Power factor has no units; it is commonly expressed as a percentage. For example, if active power is 96
kW and apparent power is 100 kVA, the power factor is 96%.
PRIMARY - Service voltage greater than 600 volts.
PULL BOX - Enclosure used for pulling service conductors.
PULL SECTION - The compartment in a customer’s switchboard where the utility’s service conductors
are terminated.
RACEWAY - An enclosed channel designed expressly for holding wire, cables or bus bars. If designated
for line side conductors, it shall be sealable. The intermixing of line and load conductors in the same
raceway is not permitted.
RCA - Regulatory Commission of Alaska.
REMOTE SERVICE – Customer owned service entrance equipment that is not attached to a permanent
structure. This type of service is required for structures that do not have a permanent foundation (e.g.
mobile homes). These services are optional for residential and non-residential applications.
RMC - Rigid metal conduit.
SAFETY SOCKET - Meter socket with test-block/bypass facilities.
SEALABLE - Normally, the provisions for the installation of ML&P’s wire security seals. Other devices
such as padlocks may be specified for sealing. See Section 305.
SECONDARY - Service voltage less than 600 volts.
SELF-CONTAINED METER - A meter that carries the entire load current and is energized at line
voltage.
SERVICE DISCONNECT - A circuit breaker, fused switch, or other approved disconnecting means by
which the service conductors can be disconnected from the utility source of supply. The term “Service
Disconnect” can be used to describe a disconnect device installed on the supply (line) side of more than
six meters also referred to as a main service disconnect. The term “Service Disconnect” can also be used
to describe a meter disconnect which controls all of, and only the energy registered by its related meter.
See Main Service Disconnect and see Meter Disconnect.
SWITCHBOARD - A large single panel frame or assembly of panels on or in which are mounted
switches, over-current and other protective devices, busses, instrument transformers and meters.
Switchboards used in ML&P’s service area shall be “front only accessible”.
SWITCHBOARD SERVICE SECTION - That part of a switchboard provided specifically for
termination of the utility’s service conductors and CT’s, when required. The revenue meters, bypass
facilities, and service switch or breaker may also be located in this area. However, the metered conductors
may pass through this section only from the point of attachment with the CT’s or the load side meter
Page 118
Glossary
terminals to the service switch or breaker. The CT compartment of this section shall be isolated from the
customer’s switch or breakers.
SWITCHBOARD, STANDARD - An electrical switchboard of minimum dimensions of height, width,
and depth with hinged meter panels, and standard size CT compartment when required.
TERMINATING FACILITIES - Bolt-type pads, bus stubs, or range-taking lugs provided by the
customer for the sole purpose of attaching the utility’s unmetered service conductors to the customer’s
service equipment.
TEST-BLOCK/BYPASS - An assembly used in conjunction with a self-contained meter socket designed
to allow the utility to de-energize the meter socket without disconnecting electric service to the customer.
TEST SWITCH - An Arrangement of small knife switches connected in the secondary current
transformer circuit between the instrument transformers and associated meters and metering devices. The
test switch is used by the utility to isolate the metering from the instrument transformers. Also referred to
as meter test switches.
TRANSFORMER COMPARTMENT - A designated area provided within a switchboard for ML&P’s
exclusive use to install the CT’s.
TYPICAL - Exhibiting the traits or characteristics peculiar to a class or group, a representative example.
VOLTAGE TRANSFORMER (VT) - An instrument transformer designed for the measurement of
voltage. It is used to reduce primary voltage by a known ratio to within the range of a transformer rated
kilowatthour meter.
WATTHOUR METER, CT RATED - An electricity meter used in conjunction with current
transformers to accurately measure and register all the electrical energy consumed in the circuit to which
it is connected. The unit ofmeasrement is the kilowatthour.
WATTHOUR METER, SELF-CONTAINED - An electricity meter that measures and registers all the
electrical energy consumed in the circuit in which it is connected and does not require instrument
transformers. The unit of measurement is the kilowatthour.
UL - Underwriters Laboratory.
Page 119
Page 120
Index
Index
A
Accessibility requirements........................................................................................................................... 19, 22, 23
Ampere ratings................................................................................................................................................... 31, 35
ANSI ............................................................................................................................................................ 5, 22, 115
Application for service............................................................................................................................................... 6
Attachment, service conductors ......................................................................................................................... 12, 23
Automatic Transfer Device.......................................................................................................................... 14, 15, 99
B
Bonded ....................................................................................................................................................... 24, 33, 115
Breaker................................................................................. 23, 26, 27, 29, 30, 31, 32, 36, 65, 67, 99, 115, 117, 118
Bypass................................................................................................................ 51, 53, 59, 61, 65, 67, 115, 118, 119
C
Changes in Requirements .......................................................................................................................................... 1
Character of service ................................................................................................................................................... 5
Clearance, meters............................................................................................................................................... 12, 23
Codes and ordinances ................................................................................................................................................ 1
Combination disconnect device and terminating enclosure..................................................................................... 31
Commercial service pedestal ................................................................................................................................... 23
Complaints, service.................................................................................................................................................... 3
Conduit, Rigid......................................................................................... 33, 63, 65, 67, 69, 712 73, 75, 77, 111, 118
Connection, service conductor................................................................................................................................. 12
CT Dimensions ...................................................................................................................................... 69, 71, 73, 75
CT Mounting Bases ................................................................................................................................................. 69
CT Rated Metering Requirements ........................................................................................................................... 33
CT support brackets ........................................................................................................................................... 71, 75
Customer Facilities .................................................................................................................................................. 10
D
Delivery, Point of............................................................................................................................. 11, 14, 15, 19, 38
Disconnection ................................................................................................................................................ 2, 12, 39
E
Easements ................................................................................................................................................................ 79
Electric Service Extensions to Permanent Facilities.................................................................................................. 8
Electric Service Extensions to Temporary Facilities ................................................................................................. 9
Electrical Generators................................................................................................................................................ 14
F
Fire alarm ........................................................................................................................................................... 39, 40
Four-Wire Delta ............................................................................................................................... 51, 53, 59, 65, 67
G
Gas equipment ......................................................................................................................................................... 24
Generators .......................................................................................................................................................... 14, 99
Grounding .............................................................. 24, 25, 43, 44, 59, 63, 65, 67, 69, 71, 73, 75, 77, 83, 85, 87, 116
Page 121
Index
H
High voltage metering.............................................................................................................................................. 38
Hinged Panels .......................................................................................................................................................... 95
I
Identification of meter sockets................................................................................................................................. 30
IEEE........................................................................................................................................................... 13, 17, 116
Inspection Requirements.................................................................................................................................... 41, 42
J
Junction Boxes ................................................................................................................... 33, 69, 71, 73, 75, 77, 111
K
Knockout.......................................................................................................................................... 65, 67, 69, 71, 73
L
Level ...................................................................................................................................................................... 105
Line Extension ......................................................................................................................................... 6, 7, 8, 9, 10
Load Control ............................................................................................................................................................ 38
Location, Meter...................................................................................................................... 9, 11, 19, 20, 21, 30, 33
Locking Requirements ....................................................................................................................................... 25, 28
M
Manual Circuit Bypass....................................................................................................................................... 26, 32
Meter Access Requirements ........................................................................................................................ 21, 22, 23
Meter Disconnects ................................................................................................................................................... 93
Meter Location....................................................................................................................... 9, 11, 19, 20, 21, 30, 33
Meter Sequence................................................................................................................................................ 22, 117
Meter Socket Height Requirements ................................................................................................................... 20, 22
Meter Socket Side Clearance Requirements.................................................................................................. 105, 107
Multiple Metering ........................................................................................................................ 67, 91, 93, 101, 107
N
National Electrical Code (NEC) .................................... 1, 11, 20, 46, 51, 53, 59, 63, 65, 67, 69, 71, 73, 75, 77, 117
Natural Gas Service Clearance Requirements ......................................................................................................... 21
Network Service................................................................................... 30, 51, 53, 59, 63, 65, 67, 69, 71, 73, 75, 111
O
Overhead Service ................................................................................................................. 10, 15, 45, 51, 53, 55, 81
P
Padmount Transformer Clearance ......................................................................................................................... 102
Padmounted Equipment Clearances....................................................................................................... 12, 13, 20, 24
Point of Delivery.............................................................................................................................. 11, 14, 15, 19, 38
Primary................................................................................................................................................................. 5, 38
Pull Box ......................................................................................................................... 11, 20, 35, 36, 45, 65, 83, 85
Pull Section ........................................................................................................................ 23, 31, 75, 89, 91, 97, 115
Pulse Metering ......................................................................................................................................................... 38
Purpose....................................................................................................................................................................... 1
Page 122
Index
R
Residential Meter Socket Requirements .................................................................................................................. 29
Right of Way.................................................................................................................................................. 7, 13, 15
Rigid Conduit..................................................................................................................................................... 65, 67
S
Safety Socket ........................................................................................................... 15, 29, 32, 51, 53, 59, 61, 67, 97
Scope........................................................................................................................................................................ 19
Sealing and Locking Requirements ......................................................................................................................... 25
Self-Contained ............................................... 12, 20, 23, 28, 29, 30, 35, 36, 38, 51, 53, 59, 61, 63, 91, 93, 101, 119
Service Complaints .................................................................................................................................................... 3
Service Conductor Connection ................................................................................................................................ 12
Service Disconnect Requirements ..................................................................................................................... 26, 27
Service Riser ...................................................................................................................................... 29, 45, 110, 111
Shunt Trip .......................................................................................................................................................... 27, 69
Side Clearance Requirements ........................................................................................................................ 105, 107
Switchboards...................................19, 20, 22, 24, 26, 29, 31, 32, 37, 38, 39, 67, 75, 77, 89, 91, 116, 117, 118, 119
T
Tampering ...................................................................................................................................................... 2, 12, 39
Tariff Reference ..................................................................................................................... 1, 3, 6, 8, 11, 15, 17, 38
Temporary Service Construction Standards ...................................................................................................... 55, 57
Temporary Service, Extensions to Facilities.............................................................................................................. 9
Test Block/Bypass ............................................................................................................................................. 65, 93
Transfer Devices .......................................................................................................................................... 14, 15, 99
Transformer Clearances ................................................................................................................................... 13, 102
Types of Service ........................................................................................................................................................ 5
U
UL, Underwriters Laboratory ............................................................................ 51, 53, 59, 63, 65, 67, 69, 71, 73, 75
W
Working Space Requirement ................................................................................................................... 89, 105, 107
Page 123
Page 124
1. APPLICANT(person/entity responsible for signing
8. PROJECT TITLE
contract/payment)
Name
9. JOB LOCATION
Address
Subdivision
Lots/Blocks
Grid(s)
Legal Description
Address
City/State/Zip
Phone
Fax
Cellular
E-mail
2. CONTACT (Individual responsible for coordinating with Chugach)
Name
Address
City/State/Zip
Phone
Fax
Cellular
E-mail
10. SERVICE ENTRANCE
Size (amps)
Voltage
Type
1 Single-Phase
1 Three-Phase
1 Overhead
1 Underground
11. EMERGENCY BACKUP GENERATOR PLANNED?
1 Yes
1 No
12. BUILDING PROGRESS (at time of application)
3. CURRENT PROPERTY OWNER(S) OF RECORD
Name
1 Property Cleared
1 Final Grade
1 Lot Corners Marked
1 Water/Sewer Installed
1 Bldg Under Construction
1 Temporary power available
If temporary power not available at site, temporary
power needed by ________________(date)
Address
City/State/Zip
Phone
Fax
Cellular
E-mail
13. Date Permanent Service Wanted
4. LOAD INFORMATION
Description of building
Total demand load in kW
5. HEAT SOURCE
1 Gas
1 Electric
6. STREET LIGHTS
1 Yes
1 No
7. LOAD CENTERS
1 Yes
1 No
CIVIL ENGINEER
Contact
Address
City/State/Zip
Phone
Fax
Cellular
E-mail
ELECTRICAL ENGINEER
Contact
Address
City/State/Zip
Phone
Fax
Cellular
E-mail
APPLICANT'S SIGNATURE
14. PLANS ATTACHED TO APPLICATION
1 Site Plan
1 Paving
1 Electrical
1 Subdivision
1 Landscape
1 Gas
1 Grade
1 Street Lights
1
Water/Sewer
1 Communications
1 Preliminary or Final Plat approved by Municipality
15. Zoning of Property
Flood Hazard Permit
Wetlands Permit
Applicant’s Engineers / Contractors / Subcontractors
GENERAL CONTRACTOR
Contact
Address
City/State/Zip
Phone
Fax
Cellular
E-mail
ELECTRICAL CONTRACTOR
Contact
Address
City/State/Zip
Phone
Fax
Cellular
E-mail
TITLE
Reset Form
DATE
Page 125

Electric Service Requirements - Chugach Electric Association

Transcription

Similar documents

It`s difficult to define time spent with Valdez Heli

Chugach Government Solutions

SC76 with 5 accessories v01.qxd

SpectraFoo - Metric Halo

Miglin-Beitler Skyneedle Fact Sheet

News Report – The Hitavada News Report – Lokmat “ Hello “ Nagpur

funJoin Play Meter on facebook

Wednesday`s Words

Cereal - Shibboleth!

SAMPLE BILL - Toho Water Authority