Vermont Electric Cooperative, Inc.
Attn: Engineering
42 Wescom Road
Johnson, VT 05656-9717
www.vermontelectric.coop
2016
Requirements
For
Electric
Service
Informational
Booklet
Toll Free: 1-800-832-2667 ext. 1117
Telephone: 802-635-2331 ext. 1117
Fax:
802-635-4210
Table of Contents
Introduction
1
Important information
2
VT Department of Public Safety Division of Fire Safety
3
Characteristics of Service Available
Types of Services
Voltage Variations
Interruption of Service
Short Circuit Duty
4
4
4
5
5
Service Extensions
VEC Installed Service Extensions
Primary Overhead Service Extensions
Number of Services per Building
Access to Installation
Cost of Service Extensions
Prorated Shares
Primary Underground Service Extension
Overhead Service Extensions
Metering
Right of Way
Customer Utilization Equipment
Electric Motor Specifications
Safety Precautions
Service Entrance Equipment
Metering Equipment
Instrument Transformer Metering Equipment
Metering for Underground Services
5
5
6
6
6
7
7
8
9
9
10
10
11
11
13
14
15
16
Requirements for Tree Trimming
Distribution Construction Right of Way Clearing (50’)
Distribution Construction Right of Way Clearing (30’)
Clearance Area for Pad Mount Transformers
19
20
21
Requirements & Drawings for Construction
Wire Matrix
Primary Underground Service Specifications
Trenching & Conduit Depth for Primary Extensions
Service Extensions with Insufficient Burial Depth
Primary Underground System
Typical Bollard Detail
Vault Guarding with Bollard(s)
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26
28
29
30
31
32
Underground Service Specifications
Underground Service – Pole to Meter on House
Underground Service – Vault to Meter on House
Meter Support Pedestal
Clearance Between Electric Meters & L.P./Natural Gas Equipment
Overhead Service Specifications
Overhead Service – Meter on House
Mast Overhead Service Specifications
Mast Overhead Service – Meter on House
Mobile Home Service Specifications
Mobile Home Service – Meter on Pole
Mobile Home Service – Meter on Stub Post
Pole Metering Specifications
Pole Metering
Temporary Service Specifications
Typical Temporary Underground Service
Typical Temporary Overhead Service
Solar Metering
33
34
35
36
37
38
40
41
43
44
45
46
47
49
50
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54
Introduction
This handbook covers the general requirements for obtaining electric service
from Vermont Electric Cooperative, Inc (VEC). It is not intended to provide a complete
description of all wiring details or legal requirements. It has been prepared as a guide
for prospective members or contractors requesting a new or modified service
connection.
Complete compliance with this booklet does not relieve the consumer or
electrical contractor from installing service entrance equipment or wiring in accordance
with the rules and regulations published or followed by the local authority having
jurisdiction.
The requirements set forth in this document represent VEC’s minimum
requirements for electric service. These requirements have been formulated to meet
the regulations of the National Electrical Code (NEC) and National Electrical Safety
Code (NESC).
VEC urges all present and prospective members and contractors to consult with
the VEC staff early in the planning stage of any new facility or project. By doing so, the
member can be assured that adequate electrical capacity will be available at the site,
when it is needed, provided all of the requirements outlined in this handbook have been
met.
Questions concerning any procedure discussed in this handbook should be
referred to VEC’s Engineering Department at 1-800-832-2667 ext. 1117.
1
Important Information
Engineering Office Hours:
7:00 a.m. - 3:30 p.m.
Department Telephone Numbers:
Field Engineers:
Engineering/Scheduling Coordinators:
Planning Engineers:
Ability to Serve Letters
Solar
Right of Way:
Herbicide Spraying
Large Trees
Distribution Lines -Multiple Trees
Transmission Lines –Multiple Trees
Solar:
Availability to Construct in Current Year
1-800-832-2667
ext. 1117
ext. 1123 or 1135
Digsafe
1-888-344-7233 (1-888-digsafe)
Telephone Companies:
Fairpoint Communications (includes Classic)
Franklin Telephone Co.
Waitsfield Champlain Telecom
1-866-984-2001
1-888-396-9944
1-800-496-3391
Vermont State Agencies:
Agency of Natural Resources
Department of Public Service
Public Service Board
1-802-828-1294
1-802-828-2811
1-802-828-2358
Vermont Electrical Inspector:
ext. 1155
ext. 1155
ext. 1104
ext. 1109
ext. 1109
ext. 1104
ext. 4222
1311 U.S. Route 302
Suite 500
Barre VT 05641-7301
1-888-870-7888
www.vtfiresafety.vermont.gov
2
3
Characteristics of Service Available
All electric service supplied by VEC is alternating current (A.C.) with frequency of
60 Hz. (cycles per second) at the nominal voltage and capacity levels indicated below.
Single-phase service is readily available in most locations throughout the VEC service
territory and the three-phase service is available in certain locations. However, where
single or three-phase service is not presently available, but is required to accommodate
a member’s electric needs, service can usually be extended at the member’s expense
(covered in the Service Extension section).
Types of Service Available
120/240 volts, 3 wire, single phase normally up to a maximum of 100kVA,
although higher amounts may be permitted at certain locations, subject to approval by
VEC.
208/120Y volts, 4 wire, three phase up to a maximum of 150kVA for an overhead
service, and no limit for an underground service. Service at 120/208 volts, 3 wire, single
phase network service is also available for customers located in an area serviced by
208Y/120 volts three phase, when the demand for single phase service is incidental to
the requirement for three phase service.
480Y/277 volts, 4 wire, three phase up to a maximum of 500kVA for an overhead
service and no limit for an underground service.
High voltage service is available for large industrial customers or other special
applications.
Voltage Variation
Equipment Ratings – Member installed equipment should be rated for operation
at the designated nominal voltage class offered by VEC. Ratings that deviate from the
nominal service classifications, such as the use of 240 volt motors on a system
nominally rated at 208 volts, may result in inadequate performance or failure of the
equipment.
Voltage Regulation – Service provided by VEC is subject to reasonable
variations in accordance with industry standards and regulatory requirements. In
general, under normal conditions, steady state voltage variation at the meter location
will be within +/- 5% of the nominal voltage rating of the designated service
classification. While VEC cannot guarantee that all members will experience voltage
regulation within this range throughout its distribution system, it will endeavor to take
remedial action to improve the regulation of its service voltage where sustained
variations outside of this range prevail under normal circumstances.
Automatic Protection – Any equipment which might be adversely affected by
infrequent or long term excursions of the service voltage outside of the normal voltage
range should be equipped with suitable automatic isolation protection. Due to
circumstances beyond the control of VEC, including but not limited to, instances of
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equipment malfunction or voltage variations originating on other interconnected
distribution, transmission or generation system. VEC cannot provide protection for all
conceivable system conditions. VEC recommends that member owned equipment be
equipped with a protective device in addition to those required by the NEC to guard
damage caused by the following events: loss of phase, under-voltage/over-voltage or
automatic restart following an interruption.
Voltage Drop – An allowance must be made for voltage drop in the customer’s
wiring between the meter location and the terminals of the customer’s equipment.
Where a member chooses to install their own service extension, VEC strongly advises
that such installation adhere to the minimum service and maximum distance
specifications (covered in Service Extension Section).
Voltage Sensitive Equipment – Certain types of utilization equipment, such as a
computer or x-ray machines may be sensitive to transient voltage variations. VEC
recommends that members with such equipment install auxiliary devices to filter out
transient over-voltages or to regulate service voltages with additional precision.
Interruption of Service
VEC is required to furnish “reasonable adequate service.” It does not, guarantee
continuous service, and does not assume direct or indirect liability for loss or damage to
person, property due to its service being furnished to the member’s premises or as a
result of any interruption or variation in the service supplied. Although VEC strives to
provide advanced notice of any interruption required to improve or repair the system, it
may from time to time interrupt service to a member without notice in order to perform
emergency repairs or improvements to its distribution system or to comply with an
order/request of any federal, state, municipal or other authority.
Short Circuit Duty
VEC’s Engineering Department can provide the calculated short circuit duty at a
member’s service location to assist in selecting service entrance equipment of the
proper short circuit rating. In most cases, the short circuit current available on the single
phase service to a single residential customer or farm will be less than 10,000 amperes.
For commercial, industrial or multi-unit residential building the available short circuit
current will depend on the size of the installation and the location of VEC’s distribution
system and must be calculated independently for each application.
Service Extensions
VEC Installed Service Extensions
VEC will provide service from either overhead or underground service
extensions. All service extensions will be installed and maintained in accordance with
the provisions of its filed Line Extension Tariff approved by the Vermont Public Service
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Board. A copy of this tariff is available upon request from VEC’s Engineering
Department. Upon completion of the applicable service application, VEC’s engineering
staff will visit the site and design a service extension which will meet the needs of the
member.
Primary Overhead Service Extensions
Although VEC normally installs primary overhead, a member may at their option
choose to install a service extension or engage the services of an independent
contractor to perform this task. All materials must be new, no used poles or etc. In the
case of a member installed service extension, VEC will make all final connections to
equipment owned and maintained by VEC. For member installed service extensions
that will be owned and maintained by the member, the meter shall be located on the
structure that terminates VEC and member owned equipment. The member will be
responsible to own and maintain all equipment beyond the secondary bushings of the
transformer.
VEC will not assume ownership and maintenance responsibility for member
installed service extension which are not installed in accordance with VEC’s rigid
guidelines and are not constructed from standard materials used by VEC. VEC’s
Engineering Department will provide material specifications and installation
specifications to assist members to install their own service extensions and who intend
to transfer ownership and maintenance responsibility to VEC upon completion.
Number of Services per Building
Generally only one service shall be installed to a building. Exceptions to this rule
may be permitted when the installation of multiple services are required to provide
separate metering of portions of a single building or for special circumstances, such as
in the case of a separate back up supply to provide standby service for loads requiring
an unusually high level of reliability. In such cases, this practice will be permitted only
upon approval by VEC and only after receiving authorization (permit) by the State of
Vermont Electrical Inspector. When more than a single meter is installed, the cost of
electricity delivered through each meter shall be computed separately.
Access to Installation
VEC, as a condition of service, requires the right to enter the member’s premises
reasonable times to permit erecting, removing operating or maintaining its service
facilities, including the reading and maintaining of meters. VEC shall have the right to
operate normal utility construction equipment on the member’s premises in the
performance of its duty, including line trucks or other mechanized vehicles where
conditions permit. At the termination of service, VEC shall have the right to access the
premises of the member and remove all property of VEC whether affixed to the realty of
the member or not.
6
Cost of Service Extension
Single phase low voltage electric service from an overhead extension of up to
100’ in length is at no charge to applicants for new service of a permanent nature.
Applicants, who request service to a meter on a service pole instead of directly to a
building the member will be charged for the cost of the service pole and meter
installation. For overhead extensions which exceed 100’ in length which involve the use
of high voltage lines and for all underground service extension the member will be
charged the applicable cost under VEC’s filed Line Extension Tariff in effort that the time
service is rendered, less a credit representing the cost of a 100’ low voltage overhead
extension.
Three phase low voltage electric service from an overhead service extension is
available on an actual cost of installation for commercial accounts.
High-voltage electric service is available for large industrial customers, wholesale
transactions or other special applications. High-voltage services, where required, will
be made available on an actual cost basis.
Note: Relocation of equipment at the customer discretion requires customers to
pay the cost of the relocation.
Prorated Shares
Whenever more than one customer is connected to said line extension, such
contribution in aid of construction, however paid, shall be computed to yield to the
Cooperative not more than the total cost of extending or expanding service to the new
customer(s) less the service drop credit provided in Section III. Amounts to be collected
from new customers connecting to customer financed lines shall be computed as
follows:
For a period of five (5) years from the completion of construction of a line
extension, reimbursement from new customers connecting to said line to customers
entitled to reimbursements shall be based upon an equal sharing of the full cost of
construction of the subject line extension, adjusted to the percentage used of that line
extension to the point of connection.
For a period of ten (10) years immediately following the initial five (5) year period
discussed above, reimbursement to customers entitled to reimbursements shall be
based upon an equal sharing of the full cost of construction of the subject line extension
depreciated at a straight line rate to zero at the end of the ten (10) year period, also
adjusted to the percentage of the line extension used to the point of connection.
For each new transaction (defined as one or more new connections at the same
time and location) involving a line that is subject to contribution-in-aid-of-construction
payments for new connections within the 15-year reimbursement period, an
administrative fee based on actual costs not to exceed $100.00 shall be retained by the
Cooperative from the total amount to be reimbursed to customers entitled to
reimbursements. If the total amount of all reimbursements owed for each transaction is
less than the Cooperative’s administrative fee, no reimbursements shall be made.
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All line extension reimbursements less the administrative fee shall be paid by the
Cooperative to the current owners of the dwellings or structures served by line
extensions that are subject to reimbursement payments for new connections, except
that reimbursement payments shall be made to any customer who paid for or
contributed to the costs of line extensions and who subsequently sold the dwellings or
structures originally served prior to the effective date of the Vermont Public Service
Board’s Order of September 21, 1999, in Docket 5496.
Primary Underground Service Extension
Underground service is available in all areas at all voltage levels and can be
provided directly from either an existing VEC underground or overhead system. VEC
tries to accommodate the request for underground service throughout the year.
However, VEC reserves the right to postpone construction during winter months due to
weather conditions until the following spring.
Care of installation – To avoid the inconvenience of a premature failure of an
underground service extension, care should be exercised during the excavation for and
installation of an underground service. To facilitate replacement upon failure as well as
to protect the electric cable, VEC requires the use of 2 ½” PVC electrical conduit be
used with all primary installed underground service extensions and recommends the
use of the conduit in all member installed secondary underground extensions. Material
used to back fill the trench must be free of sharp objects or stones larger than 1” in size
that are in contact with the PVC.
Clearance to other utilities – In general, VEC recommends a separation of at
least 12” between the conduit system containing the electric service and conduits
containing other services such as telephone, cable television or other utilities such as
water lines. Where conduit systems are encased in concrete, such clearance may be
reduced to not less than 2”.
Minimum size and maximum length of low voltage service extension – VEC
recommends for general low voltage service extensions installed and/or owned by the
member should not exceed 200’ in length. This will avoid excessive service voltage
drop and unsatisfactory appliance operation.
For member installed single phase 120/240 volt services, VEC recommends a
minimum of 1/0 Al. and 4/0 Al. conductor and 100ampere and 200ampere rated
services respectively.
Service which exceed the recommended maximum distance or which utilize
conductor smaller than the recommended size may perform poorly and result in voltage
levels which are below the minimum acceptable level for most lighting and appliance
applications. The most noticeable effect of excessively long and undersized service
extensions in fluctuating intensity levels of incandescent light during appliance
operation.
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Member’s responsibility - All trenching for underground primary or secondary will
be the member’s responsibility. Primary will not be back filled until it is inspected by
VEC and when approved, the member will back fill and VEC will then own and maintain.
Secondary will be owned & maintained by the member.
VEC is to be notified at least 24 hours prior to back-filling to have an inspector on
site to inspect the trench depth, conduit installation, back fill materials and equipment
supports. After approval member can back-fill trench.
Overhead Service Extensions
Overhead electric service is available from VEC in all areas except those that
have been designated for underground service only be zoning regulations, deed
restrictions, or other state or local ordinances to which VEC is required to adhere.
Point of attachment – A low voltage service extension installed by VEC to a
building, pole or other supporting structure shall be attached normally at a point at least
16’ above ground level near the weatherproof service head. The member shall provide
and install the service attachment device that has been specified by VEC.
Clearance above ground – low voltage extensions – The service attachment
device shall be located at a sufficient height above ground level to permit a ground
clearance for the service conductors of at least 15’. Normally this requires an
attachment point to be a least 16’ above ground level to allow for conductor sage in the
service extension or uneven terrain. Where service extensions cross roadways,
navigable waterways, or railroad tracks, the service extension shall be designed to
accommodate a minimum ground clearance as follows:
-
18’ - 38’
25’
18’
8’
27’
18’
Navigable waterways
Swimming pools
Roadways
Beyond roof tops
Railroad tracks
Farmland, orchards, etc.
Where the buildings height is too low to permit these clearances, attachment
shall be made to a service mast, installed by the member, of suitable height and
cantilever strength.
Metering
If the meter is located on the pole the member can furnish materials specified by
Engineering and installed by VEC or VEC can supply all materials required at member’s
cost. In addition, VEC will attach and connect all service conductors at the top of the
pole.
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If the meter is on a building the member shall furnish and install all equipment on
the side of the building and VEC will make final electrical connections between the
service entrance cable and the conductors at the point of attachment.
Services in excess of 400 amperes, VEC will install current transformers t the top
of the pole and metering circuits down the pole in lieu of service conductor. No
disconnect switch is used on services in excess of 400amperes.
If the meter is located on a post or pedestal the member will furnish and install all
equipment associated with the metering location including the support pedestal, stub
pole or suitable device to which the meter socket is fastened. The stub pole, post,
conduit, pedestal, conductor, meter socket, disconnect and grounds furnished by the
member shall be approved by VEC’s Engineering Department. Wooden posts used for
this purpose shall be pressure treated to resist decay at least 6” in diameter 10’ in
length and set 4’ into the ground.
In all cases **the member is responsible to own all equipment beyond the
secondary lugs on the transformer**.
Right of Way
Before VEC can install and maintain service extensions across private property
or accept ownership responsibility of member installed service extensions, an easement
permitting the perpetual access, erection and maintenance of equipment must be
granted to VEC by the landowner(s). In general, easements for overhead service
extensions must provide 50’ wide corridors, 25’ on either side of the center line. A 20’
easement is required for underground service extensions, 10’ on either side of the
center line. This means no obstructions for any kind will be allowed in the right of way.
Member’s responsibility – Unless otherwise agreed to by VEC
Unless otherwise agreed to by VEC, a member requesting a service extension
shall be responsible for obtaining the necessary easements and a copy of the
dead for VEC. Standard easement forms are available from VEC’s Engineering
Department.
The member is also responsible for the right of way clearing in accordance with
VEC’s specifications. Right of way must be fully cleared before construction of
the line extension can commence.
Customer Utilization Equipment
Fluctuating loads and unusual applications – VEC may refuse to supply electric
service to electric loads which have unusual characteristics or adversely affect the
quality of electric service supplied to other members. In some cases, however, unusual
fluctuations or disturbances can be mitigated or eliminated by specifying the type of
device which is appropriate for the particular service location or by equipping it with
proper controls. In other cases it may be necessary to substantially upgrade VEC’s
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distribution system to accommodate the device, often at the member’s expense.
Customers contemplating the installation of large motors, large welders, x-ray
machines, induction furnaces or other special equipment should contact VEC before
purchasing and installing this type of equipment.
Unbalanced loads – In general VEC shall require members to balance load
among phases such that at any instance in time the load on each individual phase shall
not deviate more than 10% from the average loading of all phases. This is particularly
important during peak load periods where substantial unbalance may cause an overload
to VEC’s service equipment and reduce the efficiency of its delivery system.
Exceptions to this rule may be permitted where VEC determines it is necessary
to install (at the member’s expense) special equipment to accommodate unbalanced
loads, or where the load levels are incidental to the capacity of VEC’s service
equipment.
Power Factor – Service equipment installed to supply commercial and industrial
accounts is designed to provide adequate capacity and operate efficiently at power
factors between unity and 95% lagging. Where customer power factor falls outside of
this range the customer is urged to install appropriate power factor corrective equipment
to avoid unsatisfactory service performance and billing penalties.
VEC’s Engineering Department can provide guidance to customers seeking to
remedy low power energy consumption.
Electric Motor Specifications
Single phase motors - The maximum size single phase motor (or poly phase
motor supplied from a single phase service by use of a converter device) which may be
utilized on VEC’s distribution system is 10 horse power. Larger sizes may be permitted
at the discretion of VEC where adequate facilities exist to minimize the impact of motor
starting on VEC’s other members.
Poly phase motors – The maximum size poly phase motor that VEC will permit
on its system varies with each location. VEC reserves the right to require poly phase
motors in excess of 20 horse power to be equipped with a device to limit the maximum
starting current to a designated value. The need to impose an operating limitation or to
require motor starting equipment will depend on the frequency of motor starting, the
amount and the duration of starting current. VEC’s Engineering Department will review
each application to ascertain any restrictions that might apply.
Safety Precautions
The safe distribution and use of electric energy is the responsibility of both the
member and VEC. The requirements set forth in this handbook are the result of many
years of experience gained in operating electric systems and have been adopted by
VEC to ensure the safety and health of its members, employees and contractors.
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Proximity to electric lines – VEC’s high voltage electric system operates at
voltage levels between 2,400 and 48,000 volts. In order to distribute electricity
efficiently, bare electric conductors energized at this voltage levels are present on VEC
poles at virtually every location where service is rendered. To avoid serious injury or
death, consumers are required to comply with the NESC with respect to minimum
distances between VEC’s line and any other object such as an antenna, balcony, roof,
outdoor lights, signs, building and other structures. Where pedestrians routinely access
such structures even greater clearance is required. Care must be exercised in erecting
antennas, ladders and other tall objects to ensure that this minimum clearance is not
exceeded and that the clearance between a person working on the ladder or other
structure and an energized conductor is at least this amount.
In general, VEC’s easement deeds prohibit the construction or erections of
antennas, building, structures or other facilities within power line right of ways (usually a
distance of 25’ from either side of the center line).
VEC urges all members, contractors and non-members to consult with its
Engineering Department before undertaking work in proximity to VEC’s lines.
Equipment owned by VEC – All work performed on VEC facilities shall be
performed by qualified VEC personnel only. An exception to this is permitted for
licensed electrical contractors install low voltage equipment at ground level on VEC
poles and other structures. However, under no circumstances are contractors not
under the employment of VEC allowed to work on VEC poles above ground level or on
VEC underground equipment.
Electric generators – Standby electric generators installed by a member to
provide backup service the event of an interruption in the supply of electricity from VEC
must be equipped with a suitable isolation device described in the service entrance
equipment section. Standby generators not properly equipped with this device present
a serious hazard to line workers repairing VEC’s line during interruptions. An isolation
device is designed to ensure that under no circumstances shall the member’s standby
generator energizing the VEC’s high voltage system. Members contemplating the
installation of standby generation equipment to supply all or a portion of the member’s
electric system must notify VEC and permit VEC to inspect the installation before such
equipment is placed in service.
Portable standby generators designed to provide backup service to specific
appliances in isolation rather than to the member’s electric system do not require
auxiliary service entrance equipment.
Permanently interconnected generators designed to operate in parallel with
VEC’s system require special protection equipment engineered for the specific
application to ensure that the generator is isolated from VEC’s system immediately
following an interruption or during other emergency conditions. VEC should be
contacted well in advance of planning for the installation of interconnected generating
equipment to permit sufficient time to evaluate the adequacy of its distribution system to
accommodate the interconnection and to determine the proper protective equipment
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that will be required. Studies for large generators that require considerable engineering
time and effort will be performed at the expense of the applicant.
Disconnections for reasons of health and safety – VEC has the authority, as
more fully set forth in its Rules and Regulations, to disconnect electric service to a
member’s property when necessary to protect the health and safety of the member,
employee of VEC or the general public. Where possible, VEC will strive to provide the
member with a reasonable amount of time to correct the deficiency before
disconnecting service. However, in cases where the condition represents a serious,
imminent health or safety threat, VEC may be required to disconnect service with
minimal, if any advanced notice.
Service Entrance Equipment
Service entrance equipment is all low voltage equipment installed by the member
beyond the point of attachment of VEC’s service extension up to and including the
member’s main service entrance panel.
Service entrance conductor – This is the wiring that connects the point of
attachment of VEC’s service extension to the meter socket and member’s service
entrance, disconnect and panel. Service entrance wiring installed by a member shall be
sized, installed and related for service entrance application in accordance with the NEC
or other code of the local authority having jurisdiction.
Service entrance conductor supplied for an overhead service extension shall be
equipped with an approved weatherproof service head. At least 3’ of exposed
conductor shall be available beyond the service head to permit VEC to make the final
connections to the service entrance.
Service entrance disconnect – The service entrance disconnect shall be mounted
in an accessible location near the point where the service entrance conductors enter the
building. Normally disconnects are installed on the load side of the meter, except in
some multiple occupancy buildings where it may be necessary to install a line side
disconnect. A disconnect installed on the line side of the meter shall be of the enclosed
type with provisions to accommodate sealing by VEC. The fuse or breaker reset lever
must be accessible without removing the seal and cover.
Where multiple service entrance disconnects are installed for multiple occupancy
buildings, each disconnect (and associated meter socket where applicable) shall be
marked in a conspicuous and permanent manner to indicate the service account which
it controls.
In general, VEC recommends that all service entrance disconnects installed have
a rating of not less than 100 amperes.
Grounding – A permanent grounding system meeting the requirements of NEC
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shall be furnished at all service entrance installations. A properly constructed ground
electrode system meeting the requirements of Article 250 of the NESC is essential to
the safe operation of an electric service operating at any voltage level. Members are
advised to seek the assistance of a qualified electrician when planning the installation of
a ground system.
The ground electrode system shall be bonded through suitable rated conductors
to the grounded conductor of the service entrance conductor at the meter socket
location or the service entrance disconnect location in accordance with the provisions of
the NEC. All metallic conduit, meter enclosures and service entrance panels shall be
connected appropriately to the grounding system as required by the code.
Standby generators – Service entrance equipment associated with standby
generators installed to supply all or part of a member’s electrical requirements in the
event of an interruption to VEC’s supply shall consist of a double throw transfer switch
designed to prevent the interconnection of the ember’s generator with VEC’s system.
Member’s contemplating the installation of a standby generator must notify VEC in
advance of installation and permit VEC to inspect the installation to ensure that the
service entrance transfer switch will meet the requirements of VEC.
Metering Equipment
Metering types – All energy supplied by VEC will be measured by electric meters
furnished and owned by VEC. VEC employs a variety of different types of meters to
accurately measure electric use sold under each of its tariffs. In general, for services
that are either greater than 200amperes and/or larger than 300 volts, VEC utilizes
instrument rated meters designed with current and/or potential transformers. Below
these levels, VEC uses self-contained meters that do not require provisions for
instrument transformers. A member or contractor should consult with VEC to review the
type of meter socket that is required for the specific service being requested.
Most meters used by VEC employ spade type terminals. However, in the case of
some instrument rated installations, VEC utilizes so-called “A-base” or bottom
connected meter.
Meter locations and heights – Meters for single occupancy buildings and small
multiple occupancy buildings must be located outside the building, and in a location
approved by VEC which is easily accessible to VEC’s meter reading and maintenance
personnel.
In large multiple occupancy buildings, meters may be located inside the building
in a single common area approved by VEC. Indoor meters must be located in a dry
and clean area that is accessible to VEC’s meter personnel at all times. Where access
is restricted at any time, a lock box containing the building key (but accessed by VEC’s
standard key) shall be provided on the exterior of the building.
Single electric meters shall be installed at a height between 5’ to 5’ 6” above
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finished grade. Multiple metering installations that cannot accommodate all meters
within a range of 5’ to 5’ 6” above finished grade may utilize the space below this level
down to a minimum height of 3’ above floor level or finished grade.
In general, meters shall be located at or near the division of ownership between
supply facilities owned by VEC and the service equipment installed and owned by the
member.
Mounting – All meter sockets shall be mounted plumb and securely fastened to
support with screws. On masonry support, expansion bolts and anchors shall be used.
Outdoor meter sockets shall be made water-tight at all conduit or conductor entrance
positions.
Self-contained meter sockets – members are required to furnish and install meter
sockets for self-contained meters, except in the case of a meter mounted on a pole. All
meter equipment associated with a meter on a pole will be supplied and installed by
VEC and billed to the member. Member supplied meter sockets shall be Underwriter’s
Laboratories (U.L.) approved, and shall include a locking provision that will enable VEC
to lock the socket with a meter seal after the meter is installed.
The incoming line side conductors must always be connected to the top terminals
of the meter socket.
Instrument rated meter sockets – The proper meter sockets together with the
appropriate instrument transformer enclosures, transformers and test switches for use
with instrument rated meters shall be furnished by VEC (at the member’s expense), but
installed by the member’s electrical contractor unless otherwise agreed to by VEC.
VEC will wire the metering installation after this equipment has been installed in place
by the contractor. VEC may permit other arrangements on occasion upon agreement.
Exception: In the case of a metal-clad freestanding service entrance equipment,
VEC will permit the use of a separate, completely isolated compartment for its
instrument transformers, provided the size and design meet the approval of VEC. Meter
sockets installed in conjunction with free standing service entrance equipment may be
mounted separately from, but not more than 50’ away from the instrument transformer
compartment.
Instrument Transformer Metering Equipment
Enclosure for transformers – Except in the case of a service metered on a pole,
an enclosure is required to house the instrument transformers used for metering
services up to 600 volts. VEC will furnish a suitable enclosure for the member’s
contractor to install. Normally the instrument transformer enclosure shall be mounted
near but ahead of the main service disconnect.
Exception 1: Instrument transformers for metering high voltage service (over 600
volts) will be mounted on the pole or in the case of an underground service within a
15
special pad mounted enclosure provided by VEC.
Exception 2: Commercial and industrial buildings which utilize metal-clad switch
gear or free standing service entrance equipment may provide separate and sealable
instrument transformer compartments as an integral component of the switch gear or
service entrance equipment. VEC’s Metering Department should be consulted during
the planning stages to ensure that adequate space and access provisions for VEC’s
metering equipment are included within the member’s service entrance equipment.
Exception 3: Where single or three phase service under 300 volts (but over 200
amperes) is rendered to a pole rather than to a building, in most cases, the necessary
current transformers can be mounted on the pole eliminating the requirement for an
instrument transformer enclosure.
Instrument transformer enclosures shall not be used to contain or terminate other
wiring not associated with the function of metering a member’s electric load. Only
service entrance conductors to be metered shall enter and leave the transformer
enclosure and no branch circuit connections or other equipment shall be permitted
inside the enclosure.
The member’s contractor shall install 1 ¼” conduit between the instrument
transformer enclosure and the meter socket. In general, the meter socket shall be
mounted with 15’ of the transformer enclosure.
The instrument transformer enclosure will be locked and sealed by VEC when
the meter has been installed. After sealing, entry to the instrument transformer
enclosure and meter socket is expressly prohibited unless authorized by VEC.
Transformer – VEC will furnish and install all instrument transformers used in
conjunction with metering a member’s service. VEC will wire the secondary metering
circuits and furnish and install a test switch between the meter and instrument
transformer.
Metering for Underground Services
Meter pedestals – As noted in the Underground Services Extension, low voltage
services installed by the member may under some circumstances be metered on a
meter pedestal. Normally this will occur when a member elects to run his or her own
low voltage service extension from VEC’s existing underground system. Meter
pedestals are free standing posts, stub poles or commercially available metallic
supports to which the meter socket and associated equipment is affixed. Pedestals
must be installed at least 4’ into the ground and permit the meter to be installed at a
height of 5‘ to 5’ 6” above the ground. Pedestals made of wood must be pressure
treated to resist decay.
Metering pad mounted transformers - Where it is convenient to do so and only a
single service is contemplated, VEC will permit instrument rated metering to be installed
in conjunction with the pad mounted transformer supplying the member.
16
Vermont Electric Cooperative, Inc.
Requirements
For
Tree Trimming
19
20
21
Vermont Electric Cooperative, Inc.
Requirements
And
Drawings
For
Construction
Wire Matrix
SUGGESTED CONDUCTOR SIZES
RESIDENTIAL 120/240 VOLT SERVICES ONLY
RATING
CONDUCTOR
LENGTH*
ALUMINUM
CONDUCTOR
CONDUIT
100A
0-140 FT
#2
2 ½”
0-210 FT
1/0
2 ½”
211-270 FT
2/0
2 ½”
271-410 FT
4/0
2 ½”
411-650 FT
350 MCM
3”
651-890 FT
500 MCM
3”
0-175 FT
2/0
2 ½”
176-275 FT
4/0
2 ½”
276-435 FT
350 MCM
3”
436-590 FT
500 MCM
3”
0-205 FT
4/0
2 ½”
206-325 FT
350 MCM
3”
326-440 FT
500 MCM
3”
150A
200A
*Conductor length is the total of trench and riser lengths. This chart does not indicate
that the conductor can be pulled into conduits of these lengths. Pulling calculations are
necessary to make that determination.
Primary Underground
Conduit:
Trench:
Pole Sweeps:
Schedule 40 Electrical PVC
3’ in depth with safety tape 6” down from grade
90 degree Schedule 80 Electrical PVC or IMC steel
Secondary Underground
Conduit:
Trench:
Schedule 40 Electrical PVC with frost sleeve
2’ in depth with safety tape 6” down from grade
Secondary Loop (Riser for Pole): Schedule 80 Electrical PVC
25
PRIMARY UNDERGROUND SERVICE
1.
All wiring and materials shall conform to the requirements of NEC and to any
applicable local codes. Where conflict exists the more stringent code will apply. For
customer owned equipment any requirements in excess of code specified minimums
are recommended not required.
2.
The location of the pole conduit riser will be designated by a VEC representative.
The pole mounted riley bracket used to attach the underground conduit will be provided
by the utility. Any relocation must be approved by a VEC representative.
3.
All trenching and back filling shall be provided by the member. If ledge is
encountered the member shall do the blasting or whatever means is necessary to
remove the ledge to the required trench depth.
4.
Depths are 36” but allowances based on the NESC may be made where
obstructions such as ledge are encountered but must be approved by a VEC
representative. Any portion of conduit shallower than 24” shall be covered by a
minimum of 6” concrete cap.
5.
The bottom of all trenching shall be of uniform pitch and not undulation.
6.
Unfrozen sand or fine gravel that will pass through a 1” mesh screen shall be
used to form a 4” cushion on all sides of the conduit. The balance of the trench may be
random-fill with no stones greater than 3” in dimension. No foreign materials such as
wood, glass, etc. shall be in the back fill.
7.
Marking tape will be put into the trench and is to be buried by the customer at the
depth of 8-12” below final grade. VEC is to be notified at least 24 hours prior to backfilling to have an inspector on site to inspect the trench depth, conduit installation, back
fill materials and equipment supports. After approval member can back-fill trench.
8.
On private roads, driveways or public roadways, the underground cable shall
normally be installed within a 10’ strip outside and adjacent to the road right of way.
9.
A vaults with transformer must be accessible to the utility’s vehicles. A road will
have to be built for access at the member’s expense if required by VEC.
10.
Vaults must be installed in tamped or undisturbed earth covered with 12” of
crushed stone that will pass through a 1” mesh screen and must be must be installed
level with approximately 4” rising above finished grade.
11.
In wet locations a sectionalizing cabinet may be installed above the water table.
12.
When possible the vault must have drainage of a 4” perforated drain line
extending to the surface.
13.
The primary conduits must enter the vault as straight as possible and by using
the holes on the long end of the vault.
14.
The pre-cast or poured on-site concrete base for 3 phase pad mounted electrical
equipment shall be applied and installed by the member in accordance with
specifications provided by the utility.
15.
On 3 phase pad mounted electrical equipment, as you are facing the unit, the
primary conduit enters on the left and the secondary conduit enters on the right.
16.
The member shall leave a pull rope in the conduit to assist pulling in the
26
conductor. The rope shall have a minimum pulling strength of 500 pounds for all cable
sizes.
17.
VEC shall specify the type, size and composition of the electrical conduit to be
used.
18.
All vertical 90 degree bends shall have 36” radius.
19.
Schedule 40 and schedule 80 PVC electrical conduit shall not be mixed in
conduit run within the trench. The conduits have the same outside diameters. However,
the inside diameters differ which could cause conductor insulation damage.
20.
A grounding grid shall be placed around all primary vaults. The wire shall be #4
stranded copper, buried to a depth of 6”-12” around the entire vault and attached to the
2 ground rods driven outside the vault.
21. The driven ground rod shall be a minimum of 5/8” in diameter and 8’ in length.
22. The utility must be notified at least 48 hours prior to back filling in order to have
an inspector on site. The VEC field representative must inspect the trench, installation
of conduit, back fill material and equipment supports before back filling can be done.
When calling in for the inspection do not leave a message unless it is after hours,
please speak with a Field Engineering or Operations & Engineering Coordinator.
23. Bollards will be used where the VEC field representative requires.
27
28
29
30
31
32
UNDERGROUND SERVICE
1.
All wiring and materials shall conform to the requirements of the NEC and to any
applicable local codes. Where conflict exists the more stringent code will apply. For
customer owned equipment, any requirements in excess of code specified minimums,
are recommended not required.
2. This specification covers residential services. Commercial service equipment is
under the jurisdiction of the electric inspector. The cable sizes shown in the chart may
not apply to commercial services.
3. The location of the conduit risers and the meter socket at any location will be
designated by a VEC representative. Any relocation shall be approved by a VEC
representative.
4.
All meter sockets on service requiring large capacity (200amp or greater) shall
have a manual bypass with a locking jaw device. The meter socket shall have a
separate grounding electrode conductor connector. The connector shall be
appropriately connected to the service neutral bus. The grounding electrode
connection will normally be made in the meter socket. The service neutral, and not the
grounding electrode conductor, shall extend from the meter socket to the main
disconnect.
5. The grounding electrode conductor, to a driven ground, shall be a minimum of #6
copper. The conductor shall be adequately protected. The driven grounds shown shall
be a minimum of 5/8” in diameter and 8’ in length.
6. Any steel conduit within 18” of the surface shall be bonded. Steel conduit is not
required.
7. Any construction, at the pole, required by the member will be approved by the
designated VEC representative.
8. Depth shallower than 24” may be allowed where obstruction such as ledge are
encountered. Any portion of the conduit shallower than 24” shall be covered by a
minimum of 6” concrete cap.
9. All gas valves shall be a minimum of 10’ from electric meter equipment. For
clearances less than 10’ see NFPA 58.
10. The service disconnecting means shall be installed at a readily accessible
location, either outside of a building or structure, inside a building or structure nearest
the point of entrance of the service conductors, not to excess 10’ conductor length, from
the point of entrance. Local jurisdictions may specify a shorter distance.
11. The chart shows the acceptable total cable length for given service amp ratings
and conductors. The chart is based on a maximum 3% voltage drop in an aluminum
underground service cable for 120/240 volt service. For other voltages, cable or
multiple cables consult your local utility.
12. All marker tap shall be installed, above the conduit, 12’ below grade. Type USE
cable shall be marked or listed sunlight resistant.
13. A side bar meter socket is required if 350 MCM cable is used.
33
Vermont Electric Coopertive, Inc.
Pole to Meter on House
34
Vermont Electric Coopertive, Inc.
Vault to Meter on House
35
5’ MIN
36
Vermont Electric Coopertive, Inc.
Clearance for L.P. or Natural Gas Equipment
37
OVERHEAD SERVICE
1. All wiring and materials shall conform to the requirements of the NEC and to any
applicable local codes. Where conflict exists the more stringent code will apply. For
customer owned equipment, any requirements in excess of code specified, minimums
are recommended not required.
2. The point of attachment of the service drop and the location of the meter socket
will be designated by a VEC representative. Any relocation shall be approved by a VEC
representative.
3. On low buildings, without the minimum of 15’ clearance, a mast with guy wire shall
be required.
4. The service drop will not be allowed to be attached on or under the eaves.
5. In areas subject to truck traffic, the clearance required to the service drop, is a
minimum of 16’, under the ice loading conditions described in the NESC. If the
overhead service is owned by the customer, rather than the utility the clearance
required is a minimum of 18’ under the conditions described in NEC (no loading at 60
degrees Fahrenheit). In areas only subject to pedestrian traffic, the clearance required
to the service drop, is a minimum of 12’, under the ice loading conditions described in
the NESC.
6. All meter sockets on services requiring large capacity (greater than 200amps) shall
have a manual bypass with a locking jaw device. The meter socket shall have a
separate grounding electrode conductor connector. The connector shall be
appropriately connected to the service neutral bus. The grounding electrode connection
shall normally be made in the meter socket. The service neutral, and not the grounding
electrode conductor, shall extend from the meter socket to the main disconnect.
7. The grounding electrode conductor, to a driven ground, shall be a minimum of #6
copper. The conductor shall be adequately protected. The driven rods shown shall be
a minimum of 5/8” in diameter and 8’ in length.
8. All gas valves shall be a minimum of 10’ from electric meter equipment. For
clearances less than 10’ see NFPA 58.
9. The service disconnection means shall be installed at a readily accessible location,
either outside of a building or structure, or, inside a building or structure nearest the
point of entrance of the service conductors, not to exceed 10’ of conductor length, from
the point of entrance. Local jurisdictions may specify a shorter distance.
10. The service drop cable and its drip loop shall have a clearance of 3’ from any
accessible opening such as to the side of an operable window, top of a doorway, a
balcony or to the side of a fire escape. No clearance is required directly above a
window. If the opening is used for access for people or materials, then service cables
shall not be placed below the opening see NEC Article 230-9.
11. All services, unless the exceptions of note 12 or 13 apply, shall have a clearance
of 8’ from the roof. That clearance is required above the roof and 3’ beyond the edge of
the roof. The service drop may attach to the side of the building.
38
12. For rooves easily accessible to pedestrian or vehicular traffic, clearance is those
required above ground surfaces (see note 5).
13. For accessible rooves with a slope of 4 on 12, or steeper, and voltages less than
300 volts between conductors, the clearance to the roof may be reduced to 3’. A roof is
considered accessible if it can be accessed by a window or permanently mounted
ladder.
39
Vermont Electric Coopertive, Inc.
Meter on House
40
MAST OVERHEAD SERVICE
1. All wiring and materials shall conform to the requirements of the NEC and to any
applicable local codes. Where conflict exists the more stringent code will apply. For
customer owned equipment any requirements in excess of code specified minimums
are recommended, not required.
2. The location and height of the service mast and the location of the meter socket
shall be designated by a VEC representative. Any relocation shall be approved by a
VEC representative.
3. All entrance wiring shall be complete prior to the utility placing the service drop.
The customer assumes the responsibility that the mast is of adequate strength and
adequately braced to support the strain of the service drop.
4. Mast heights above 3’ or service drops longer than 100’, the mast shall be guyed.
Guying may be required on masts shorter than 3’. A larger than nominal conduit may
be required to support the service drop on masts shorter than 3’.
5. If circumstances result in the mast being located on the eaves side of the building
rather than the gable side, the meter socket shall be protected by an overhead to
prevent water or ice falling from the eaves.
6. All services, unless the exceptions of notes 7, 8 or 9 apply, shall have a clearance
of 8’, from the roof. That clearance is required above the roof and 3’ beyond the edge
of the roof.
7. Rooves easily accessible to pedestrians or vehicular traffic, clearances are those
required above surfaces (see note 10).
8. Inaccessible rooves with a slope of 4 on 12, or steeper and voltages less than 300
volts between conductors, the clearance to the roof may be reduced to 3’. A roof is
considered accessible if it can be accessed by a window or permanently mounted
ladder.
9. For mast service installations with a voltage less than 300 volts between
conductors, the clearance to the roof may be reduced to 18’, provided no more than 6’
of service drop crosses over the roof and provided the mast is no more than 4’ from the
edge of the roof.
10. In areas subject to truck traffic the clearance required to the service drop is a
minimum of 16’, under the ice loading conditions described in the NESC. If the
overhead service is owned by the customer rather than the utility, the clearance
required is a minimum of 18’ under the conditions described in the NEC (no loading at
60 degrees Fahrenheit). In areas only subject to pedestrian traffic the clearance
required to the service drop is a minimum of 12’, under the ice loading conditions
described in the NESC.
11. All meter sockets on services requiring large capacity 9greater than 200amps)
shall have a manual bypass with connector shall be appropriately connected to the
service neutral bus. The grounding electrode connection shall normally be made in the
meter socket. The service neutral, and not the grounding electrode conductor, shall
41
extend from the meter socket to the main disconnect.
12. The grounding electrode conductor to a driven rod shall be a minimum of #6. The
conductor shall be adequately protected. The driven rods shown shall be a minimum of
8” in diameter and 8’ length.
13. All gas valves shall be a minimum of 10’ from electric meter equipment. For
clearances less than 10’ see NFPA 58.
14. The service disconnecting means shall be installed at a readily accessible
location, either outside of a building/structure or inside a building/structure nearest the
point of entrance of the service conductors, not to exceed 10’ of conductor length from
the point of entrance. Local jurisdictions may specify a shorter distance.
42
Vermont Electric Coopertive, Inc.
Meter on House
43
MOBILE HOME SERVICE
1. All wiring and materials shall conform to the requirements of the NEC and to any
applicable local codes. Where conflict exists the more stringent code may apply. For
customer owned equipment, any requirements in excess of code specified minimums,
are recommended, but not required.
2. A VEC representative will designate the location of the metering pedestal. All
service feeds from a metering pedestal must be clearly marked to indicate its purpose
unless located and arranged to the purpose is evident.
3. The main services are required from the disconnect point to the sub panel in the
mobile home.
4. Four wire services are required from the disconnect point to the sub panel in the
mobile home.
5. All support post must be 6” x 6” x 10’ pressure treated wood rated for soil contact.
6. Frost sleeve shall be used wherever the conduit leaves the ground and is
terminated at a securely mounted item.
7. Conduits or raceways through which moisture may contact energized live parts
shall be sealed or plugged at either or both ends.
8. The driven ground rods shall be a minimum of 5/8” in diameter and 8’ in length
driven a minimum of 6’ apart.
9. Where subject to state or local electrical inspection, such inspection must be made
prior to energizing the service.
10. A form on disconnect must be installed within 30’ of the mobile home.
44
45
46
POLE METERING
1. All wiring and materials shall conform to the requirements of the NEC and to any
applicable local codes. When conflict exists the more stringent code will apply. For
customer owned equipment, any requirements in excess of code specified minimums
are recommended not required.
2. This specification covers residential services. Commercial service equipment is
under the jurisdiction of the electrical inspector. The cable sizes shown in the chart may
not apply to commercial services.
3. The location of the conduit riser and the meter socket will be designated by a VEC
representative. Any relocation shall be approved by a VEC representative.
4. Conduit condulators may be required for multi-conductor services and for
conductors of 350 MCM or larger. Exercise care in limiting water entry.
5. Location of the conduit riser at the pole shall be designated by a VEC
representative.
6. All meter sockets on services requiring large capacity (greater than 200amps) shall
have a manual bypass with locking jaw device.
7. Any steel conduit within 18” of the surface shall be bonded. Steel conduit is not
required.
8. Any construction, at the pole, required by the member will be approved by a VEC
representative.
9. All gas valves shall be a minimum of 10’ from electric meter equipment. For
clearances less than 10’ see NFPA 58.
10. The service disconnecting means shall be installed at a readily accessible
location, either outside of a building/structure or inside a building/structure nearest the
point of entrance of the service conductors, not to exceed 10’ of conductor length from
the point of entrance. Local jurisdictions may specify a shorter distance.
11. The chart shows the acceptable total cable length for given service amp ratings and
conductors. The chart is based on a maximum 3% voltage drop in an aluminum
underground service cable for a 120/240 volt service. For other voltages, cables or
multiple cables consult your local utility. The chart is a recommendation, rather than a
requirement, in the case of pole metering. However, failure to follow these
recommendations can cause damage or malfunction of the customer’s equipment. The
utility does not accept any liability for loss or damage incurred as a result of said failure
and the customer proceeds at his/her own risk. The conduit attached to the pole shall
meet the char’s size for the cable chosen by the customer. The cable size shall, at a
minimum, meet the capacity of the customer’s disconnect.
12. The decision to allow pole metering is solely at the utility’s discretion. The pole
shall be in a location that is protected from pedestrian and vehicular traffic. The pole
shall not be in a location that is inconvenient for meter reading. The pole shall not be
encumbered with equipment, primary taps or other risers that make future pole
replacements difficult. Pole metering is not available for customers with multiple service
rates or for time of day rates controlled by a relay in the meter.
47
13. VEC recommends that the customer install an integral breaker/meter socket. The
purpose of the breaker is to allow the customer to maintain their underground service
without an expensive line crew visit.
48
Vermont Electric Coopertive, Inc.
Meter on Pole
49
TEMPORARY SERVICE
1.
To provide, erect or install an adequate distribution panel and to maintain such a
panel in a weatherproof condition.
2.
To install a 3 wire circuit (per NEC) to the distribution panel, which shall be sized
to the amperage of the main disconnect, as specified above.
3.
To install 2 copper ground rods at the distribution panel, such rods to have at
least the minimum dimensions of 8 feet in length and ½ inch in diameter.
4.
To install ground fault protection (see drawing) on all 120-volt circuits going out of
the distribution panel.
5.
To accept full responsibility to examine and inspect daily, prior to use, all
electrical tools, extension and equipment.
6.
To perform all installation in full compliance with the requirements of the National
Electric Code (NEC) of the National Board of Fire Underwriters, together with any state
or local electric codes or regulations, where applicable.
7.
To have and hold VEC harmless from, and to indemnify VEC against any and all
claims, actions, or suits for injury, damage, or loss of persons or property however
caused, which may arise or be alleged to have arisen in connection with the furnishing
of electric service under this agreement.
8.
To make advance payment for labor and expense of performing the temporary
connection and for all material, including salvageable material, when applicable, and as
required by the filed tariff of VEC.
9.
All energy used during the period for the temporary service as provided is to be
billed to the above address at the application rate set forth in VEC’s tariff rate schedule.
10.
Application valid for 6 months from date energized, after which VEC will review
and disconnect or extend the application date.
50
2’ min
Vermont Electric Coopertive, Inc.
Temporary Underground Service
51
Vermont Electric Coopertive, Inc.
Temporary Overhead Service
52
53
54
NOTES & QUESTIONS