Specifications and Installation Guide - Eversource system be backfilled prior to the ... (Electrical Distribution to New Residential ... Inspect the underground conduit system and

Specifications and Installation Guide

for Underground Service to

Residential Developments

June 2010

Western Massachusetts Electric

TABLE OF CONTENTS

I. Scope………………………........................................................4 II. General Requirements…………………………………...........4

a. Plans…………………………………………………………..4, 5 b. Code Compliance……………………………………….....5 c. Environmental Permits………………………………….5 d. Customer Payment………………………………………..5

III. Division Responsibility a. The Customer………………………………………………..5 b. WMECO will……………………………………………….....6

IV. Construction Schedule…………………………………............6 V. Construction Requirements

a. Layout and Grading…………………………………..........6 b. Trenching……………………………………………………...6, 7 c. Backfilling……………………………………………………..7

VI. Inspection…………………………………………………………...7 VII. Conduit/Installation……………………………………………...8 VIII. Single-Phase mounted Transformer Vault………………..9 IX. Secondary Vault (Hand hole)……………………………….....9, 10 X. Riser Pole…………………………………………………………...10

XI. Services……………………………………………………………...10

XII. Street lighting……………………………………………………...10

XIII. Other Utilities……………………………………………………...10 Appendices………………………………………………………………….11 Reviewed and Updated June 2010

2

Required Lead Times The following lead times should be adhered to in order to facilitate timely completion of your proposed project Design lead time: 8 weeks After the Company receives all required materials (town approved plot plan, loads, easement information, street light layout, etc.) Inspection: 3 working days This is the time required to schedule a company inspector to check the construction. In no case shall any trench, conduit, silos vaults or other parts of the conduit distribution system be backfilled prior to the Company inspector’s approval. Installation of WMECO equipment will be scheduled when all requirements have been met. Note: Any changes during engineering or construction, will affect the agreed upon installation schedule and the revised project completion date must be communicated in a timely manner.

3

Requirements and Division of Responsibilities between the Customer and Western Massachusetts Electric Company

For Underground Residential Distribution Systems

I. Scope

a. This document has been prepared as a guide in the installation of Underground Residential Distribution conduit systems within residential developments.

b. The terms of the Western Massachusetts Electric Company’s New Business Policy NB-21M (Electrical Distribution to New Residential Developments) apply and are incorporated in this document.

c. The Company reserves the right to modify or amend this document and its specifications as it deems necessary.

II. General Requirements

a. Plans and documents must be submitted along with name, address and phone number for:

Developer Surveyor (creating easement maps) Attorney (recording easement)

The customer will provide, in advance and at no cost to the Company, the following:

Town approved site plan. The company cannot begin design work prior to receipt of this plan.

A minimum of two copies of the approved Planning and Zoning development map showing property lines only, total number of house lots proposed, their locations and footprint, lot numbers and associated 911 address numbers.

One set of detailed development plans showing proposed location and footprint of houses, driveways, septic systems, water lines, gas lines, sewers, etc.

A copy of all permits and approvals that have been obtained for constructing the development.

Easements (in accordance of appendix a) for all facilities required to serve the residential development.

A copy of a street light proposal for the development, approved by the municipality, or written notice from the municipality that street lighting will not be required; if installation is requested after construction is complete, additional costs, including the Company’s tax liabilities, may be borne by the municipality and /or Customer if the tariff does not collect all costs of construction.

4

A schedule of Customer’s best estimate for the timeframe of construction of homes in the development.

Such other reasonable information that may be deemed necessary for our design of the project.

b. Code Compliance

All construction must be in accordance with the Company’s Construction Standards, WMECO Information and Requirements for Electric Supply Below 600 Volts booklet as published by the Company, the Company’s New Business Policy NB-21M, and shall comply with all applicable codes and requirements.

c. Environmental Permits

The Customer will obtain any required environmental permits prior to the start of construction. In addition the customer will certify to the Company, that work areas in which the Company is to perform installation or maintenance, are free of preexisting contamination by hazardous wastes or materials as defined in the Massachusetts General Laws, Chapter 21E, and will indemnify the Company for any claims, costs, expenses, suits, demands, citations, fines or damages of any kind arising form the presence of any such contamination.

d. Customer Payment

Materials will not be ordered and the WMECO portion of the construction project shall not begin until after the Customer makes all required payments.

III. Division of Responsibility

a. The Customer, at no cost to the Company, shall:

Prior to the start of the Company’s construction, provide all applicable documents required by the Company including easements.

Install conduit for Company-owned street lights. Provide and install all other required foundations, transformer pads,

hand holes, vaults, grounding systems, and conduit including glue, warning tape, 1/4” diameter nylon pull line and conduit plugs, etc., as indicated on the Company’s plan and related construction documents.

Supply Company-approved equipment only; equipment that is not approved shall not be used without the prior written consent of the Company.

Install all primary, secondary and service conduits, from the proposed Company equipment locations, to each meter location or temporary dead-end as designated by the Company.

Ownership and responsibility of the primary and secondary conduit system will revert to the Company upon inspection and acceptance of the conduit system by the Company. Ownership and responsibility of the service conduit reverts to the future home owner.

5

b. WMECO will:

Develop the conduit plan to provide underground electric service. Furnish a list of materials, approved manufacturers and their

equipment part numbers, to be supplied by the Customer. Designate the location of all Company owned equipment and service

entrance and meter location(s). Provide Company owned street light foundations as applicable for

street light installations. Provide, install, own and maintain all transformers, Company owned

street lights, primary and secondary cable, and services up to meter. Make all connections to Company equipment. Inspect the underground conduit system and equipment foundations

installed by the Customer, prior to backfilling. IV. Construction Schedule

a. The Company may, at its discretion, construct the distribution line in segments, rather than all at once.

b. The roadway binder coat shall be installed prior to the start of installation of company facilities.

V. Construction Requirements

a. Layout and Grading Final grades shall be established with easement boundaries, street, lot, and trench lines staked by the Customer before any trenching is started

b. Trenching

The Customer shall adhere to the Company’s construction plan specifying trench locations, conduit depths and requirements specified in DTR 50.103 and DSEM 07.821, enclosed. Any changes are subject to approval by the Company.

Trench location shall be in as direct a line as possible, without reverse bends, between distribution facilities and from the distribution facility to the customer service entrance.

In order to minimize cable-pulling forces, no more than two sweeps (not including riser at house or pole) exceeding a total change in direction of 45 degrees shall be permitted.

Minimum burial depths specified for all electric conduits shall be maintained during all phases of construction. Any temporary mechanical protection required over buried conduit to prevent crushing or damage due to unusually heavy construction equipment shall be the responsibility of the Customer.

6

The trench bottom shall be solid and relatively smooth, or undisturbed earth, well tamped, and free of any debris that may be detrimental to the conduit. Excavation shall be of a size and extent to permit proper installation of conduit and structures, as required.

Where excavation is in rock, it shall be removed to 4 inches below the trench bottom. The over excavation shall be replaced with a bedding of gravel, sand or clean well tamped backfill.

Any conditions not suitable for a stable foundation shall be reported to the Company Representative for recommendation.

c. Backfilling

The Company’s representative shall be notified in advance of backfilling of any electric facility, i.e., conduit, vault, handhole, grounding, etc.

If any facility is backfilled without the Company’s prior approval, the Company reserves the right to require re-excavation of the facility.

Backfill shall not contain ashes, cinders, shell, frozen material, loose

debris or stones larger than 2 inches in maximum dimension. All backfill shall be compacted.

Trenches shall be immediately backfilled following conduit system inspection and approval by the authorized Company representative.

Backfilling shall be accomplished in a continuous manner from one structure to the next, and shall not be placed over any open-ended (unplugged) conduits.

Company approved red cable marking or “caution” tape shall be installed in the trench twelve inches above and directly over the conduit.

VI. Inspection

a. The Company’s representative shall be responsible for the inspection of the conduit system being prepared and installed by the Customer, at various stages of installation.

b. The inspection shall include, but not be limited to the following:

All trenches and excavations. All material supplied by the Customer. All backfill material during or after installation as applicable. All vaults, handholes, grounding and other facilities, after setting in place,

but prior to backfilling. All conduit installations, including cemented joints, bends, sweeps, bell-

ends, pull line and conduit plugs, prior to backfilling. All conduit terminations at transformer structures, handholes, switch

locations, riser poles and other applicable locations. All backfilling operations around structures and conduit runs. Customer shall ensure conduits are free of any obstructions and debris.

7

VII. Conduit / Installation

a. Conduit shall be installed in accordance with Company Standards and Construction Plans which accompany this specification package. Refer to DSEM 07.821 and 07.822 which cover general requirements for conduit installation.

b. Standard conduit shall be minimum 3 inch diameter, rigid PVC, heavy wall,

sunlight resistant (6% - 7% titanium dioxide by weight), listed and labeled electrical grade schedule 40 as per NEMA TC2-1990.

c. Sweeps used at house or pole risers shall have a minimum radius of 24 inches,

with 36 inches preferred. Minimum 48-inch radius sweeps are required within the conduit run.

d. Reverse bends shall not be allowed within the conduit run.

e. Conduit shall enter concrete vault perpendicular to the knockout. If this is not

practicable contractors shall provide 22-1/2 or 45-degree schedule 40 PVC bend.

f. Conduit in the trench should have a 4 inch per 100 feet downward pitch

toward the distribution facility, if physically possible, to provide drainage away from the service entrance, and prevent stagnant water from collecting in ducts.

g. Install conduit with all joints cemented, through knockout and extend 3 inches

inside concrete hand hole. Terminate conduit run with end bell and permanently mark conduit destination on conduit end.

h. Install ¼” diameter nylon pull line, including 10 feet of slack, in each duct and

secure to conduit plugs at each end. Gaps around conduit in hand hole knockout openings shall be sealed with mortar to prevent backfill from entering distribution facilities.

i. Minimum separation between electrical conduit and other utilities in the

trench shall be as indicated in DTR 50.103.

j. Conduit shall have 30-inch minimum burial depth, top of conduit to finished grade, for both primary and secondary voltages. Main electric trenches shall maintain conduit depths as shown in DTR 50.103.

k. In the event proper depth of conduit cannot be achieved, or where foreign

objects threaten to interfere with the installation of conduit, the Company’s representative may require steel conduit or concrete encasement of the conduit.

l. Unique conditions will be addressed in the Company construction plan.

m. Parallel installation of any conduits and other facilities directly above

electrical system conduits are prohibited.

8

VIII. Single-Phase Padmounted Transformer Vault

a. Padmounted transformer vault structures shall be located no further than 10 feet from a driveable, paved surface.

b. All vaults shall be level and installed in accordance with DTR 58.185.

c. A minimum of six inches base course of crushed stone (3/4 inch max. stone

size) or free-draining gravel shall be placed under all transformer vault excavations and shall be thoroughly compacted using a vibratory compactor. Certain soil conditions may require removal below normal depth and subsequent additional clean fill or stone added and compacted to insure sound base course for transformer vault.

d. Transformer vault pad /slab tops shall be three inches above final grade. In no

instance shall final grades hamper proper access or operation of Company distribution equipment.

e. Install two 5/8” X 8’ galvanized steel ground rods spaced a minimum 8’ apart

in the trench adjacent to the vault. Do not install the ground rods inside or underneath the concrete vault. Leave a 10-foot coil of #6(minimum) bare solid copper ground wire for connection to the transformer. Telephone and cable company bond wires shall be provided and tied to Company ground rods with Company-approved connectors as shown in the enclosed Material. Refer to Figures 8, 9 and 10. Such bonding or connection shall not interfere with connecting Company equipment.

f. A hill holder as shown in DTR 50.341 shall be installed where slopes exist that

would undermine or cover equipment (i.e., transformers) due to sharp drop-off or rise of grade. A customer designed retaining wall may also be considered as an alternative in such cases.

NOTE: The Company shall require that equipment easements on private

property be reasonably level. Also, all retaining walls shall fall outside of equipment easements and in no case shall they hamper door openings, safe operation (see DSEM 07.822) or placement of such equipment. Retaining wall design shall be approved by the Company.

g. Transformer vault shall be completely backfilled prior to commencing any

cable pulling.

IX. Secondary Vault (Hand hole)

a. Vaults shall be installed in accordance with details shown in DTR 54.201 or DTR 54.203.

b. Vaults shall be installed such that their covers will be flush with or slightly

above finish grade. In no case shall final grade cover or hamper access to the handhole covers.

9

c. A minimum of six inches base course of crushed stone (3/4 inch. max. stone size) or free-draining gravel shall be placed under all vault excavations and shall be thoroughly compacted using a vibratory compactor. Certain soil conditions may require excavation below normal depth. Additional clean fill or stone must be added and compacted to ensure a solid base course for the vault.

d. Vaults shall only be placed within equipment easements. They shall not be

placed within the sidewalk area or within the traveled way.

e. Covers shall be secured to all vaults immediately upon completion of their installation and backfilling.

X. Riser Pole

a. The Company shall designate conduit riser locations on the pole(s). Riser pole details shall be in accordance with DTR 12.057 and Figure 13.

b. All spare riser bends shall be terminated in a coupling and plugged or capped,

above ground at the pole base.

c. 90 bends at a riser pole shall be galvanized steel. All steel riser bends shall be grounded in accordance with Company requirements, as shown in Figure 13.

XI. Services

a. All services shall be single-phase, three-wire, 120/240 volts nominal. Reference shall be made to the WMECO Information & Requirements for Electric Supply Below 600 Volts booklet.

b. Provisions for future services shall be installed as shown in DTR 54.203 and

the attached related figures. XII. Street lighting

Conventional street lighting shall be installed in accordance with WMECO design specifications and located where indicated on construction plans. Contact a Company representative for Premium Decorative or other street lighting options.

XIII. Other Utilities

Conduit, terminal enclosures or other structures belonging to other utilities shall be located so they do not interfere with electrical installations nor impede the operation or maintenance of electrical facilities. Refer to DSEM 07.822 for a sketch indicating the acceptable zone(s) for installation of above-ground facilities belonging to other utilities.

10

Appendices

Easement Procedure for Subdivisions

Conduit System Checklist

Material Specifications/Supplier Matrix

Approved Manufactures of Other related equipment

Matrix Construction

Construction Pictures

Detailed Underground/DB Construction Specifications

11

APPENDICES Easement Procedure for Subdivision

The owner of a subdivision must provide a fully executed Utility Easement to WMECO specifications prior to the installation of any WMECO facilities.

The following information is required to process the Utility Easement:

Property owner’s name and address. Attorney’s name and address. Surveyor’s name and address. Subdivision name and address. Two copies of the approved subdivision plan. Property deed and plan book and page information. Mortgage holder name and address.

The Utility Easement area will include the proposed public way in its entirety, plus an additional ten (10) foot wide area along all lot frontages adjacent to the proposed public way. Any exceptions to this format will require approval of the WMECO field-engineering technician and real estate agent.

The subdivision owner or his attorney, working in conjunction with WMECO’s Real Estate Agent, must provide the easement document, a recordable plan showing the proposed utility easement area, subordination of mortgage holder, authorized signatures and notarization and recording of all documents.

The completed Utility Easement and plan will be submitted to WMECO’s Real Estate Agent for review prior to recording of the document.

Upon acceptance, the WMECO Real Estate Agent will notify the attorney to record the utility easement and associated plan, providing a copy of the recording information to WMECO’s Real Estate Agent.

12

SINGLE PHASE CONDUIT SYSTEM INSPECTION CHECKLIST Do not backfill BEFORE conduit system inspection and approval by the Company. Every item below must be inspected and checked off by a Company Representative. Any item found unacceptable must be initialed and rectified by the Developer prior to next inspection.

N* Y* TRENCH / CONDUIT Min. 30” depth from finished grade to top of primary and secondary conduit. Min. 24” depth from finished grade to top of service conduit Conduit minimum size 3” diameter Schedule 40 PVC, electrical grade. Min. 18” clearance in all directions between electric conduits and adjacent water, sewer,

fuel, (oil or gas) lines, and building foundations. 1/4-inch diameter nylon pull line, including 10 ft. of slack, installed and secured in conduit

with conduit plugs at both ends. Clean backfill (with less than 2” stones) on-site for backfilling entire trench, (inspector may

witness backfilling). Caution Tape – spot check. Conduit run conforms to layout in construction plan. No parallel conduits or other facilities directly above electrical system conduits. SECONDARY VAULT (HANDHOLE) 6” of crushed stone or compacted free draining gravel under vault. Vault is level. Covers installed and properly secured. Conduit plugs with ¼” diameter nylon pull line installed in all conduit ends. 3” of conduit extended into vault and properly labeled. Gaps around conduit at knockouts sealed with cement mortar. Correct orientation to road and lot lines. TRANSFORMER VAULT 6” crushed stone or compacted free-draining gravel under transformer vault. Vault is level. Top of pad surface 3” above final grade. 3” of conduit extended into vault and properly labeled. Pulling eyes properly secured in place. Conduit plugs with ¼” diameter nylon pull line installed in all conduit ends. Two ground rods installed with #6 bare cu. ground wire, spaced a minimum 8 feet apart. Bond wires provided for Telephone and Cable companies – 10’ minimum. Gaps around conduit at knockouts sealed with cement mortar. RISER POLE 90 degree galvanized steel bend installed as specified. Bend capped and secured to pole with pipe strap. Steel-PVC adapter and steel sweep not encased in concrete. Ground clamp and 6’ ground conductor installed. Conduit riser located on field side of pole opposite direction of traffic. Riser path clear to top of pole.

*NOTE: Y – Acceptable; N – Deficient

13

NU-Approved Precast Suppliers

SP

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-020

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60"x

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Advance Materials, Inc.11 Colton RoadEast Lyme, CT 06333(860) 691-8350

X

Arrow Concrete Products, Inc.539 Oronoque RoadMilford, CT 06460(203) 301-5091 or at560 Salmon Brook StreetGranby, CT 06035(860) 653-5063 21

X

Atlas Concrete Products, Inc.575 Wallingford RoadDurham, CT 06422(860) 349-1751

X X X X X X

Connecticut Precast Corporation555 Fan Hill RoadMonroe, CT 06468(203) 268-8688

X X X X

Cromwell Concrete Products, Inc.667 Main StreetCromwell, CT 06416(860) 529-3417

X X X X

Eastern PrecastRoute 133Brookfield, CT 06805(203) 775-9380

X X X X

Jolley Precast, Inc.463 Putnam RoadDanielson, CT 06239(860) 774-9066

X X X X X X X

Oldcastle Precast151 Old Farms RoadAvon, CT 06001(860) 673-3291

X X

United Concrete Products, Inc.173 Church StreetYalesville, CT 06492(203) 269-3119

X X X X X X X

NU Material Specification

14

NU-Approved Manufacturers of Other Related Equipment Cover, Handhole, Hexagon/Round, 42” Dia., Fiberglass (SPC C-710)(SC 0174819)

Advanced Materials Inc. (AM-42) Holbeck By desc.

Nordic (NDC-42) Extension, Hexagonal Handhole, Precast, 36” Dia. x 4” High (SPC E-946)(SC 0174901)

Concast (HE-44) United Concrete Products, Inc. (By Desc)

Extension, Vault, Precast, 180-Deg. Section-36” Dia. x 4” H (SPC E-953)(SC0174870)

Concast (HE-42) United Concrete Products, Inc. (by Desc)

Extension, Handhole, Lawn

Fargo (B-120TK) (SC 0174875) PENCELL (PE-20-5) (SC 0174876)

Ground Rods (SC 0175362) Carolina (By Desc) Chance (8578) Galvan (GR6258) Joslyn (J5328) Ground Connector (SC 0178957) Blackburn (JAB58H) Joslyn (J8492) Burndy (GRC58) O-Z (GRC-62-10B) Dossert (GN62) Southport (GC31) Conduit Plugs, 3-inch 4-inch

Electrical Materials (COND PL3) (SC 0434785) (COND PL4) (SC 0434786)

Handhole, Lawn, Plastic (SC 0174991) PEN-CELL (PE-30HDX-EWB) Carson (1730183HGE20AUO) Handhole, Sidewalk, Polymer Concrete (SC 0174994) CDR (PA12-1730-18) Quazite (PG1730BA18/HA17) Highline (CHA173018HE1) Handhole, Streetlight (SC 0174953) PEN-CELL (PE-10X) Hill Holder – (SC 0183406 – 16”, SC 0183407 – 32”, SC 0183409 – 20”) Nordic (NHH-16-46-52) 16” back height (NHH-20-54-52) 20” back height (NHH-32-46-52) 32” back height

15

NU and Customer / Contractor Responsibilities

NU CONTRACTOR ITEM Provides Installs Provides Installs HIGH VOLTAGE PRIMARY SYSTEM Trench / Backfill X X Conduit X X ¼-Inch Diameter Nylon Pull Line X X Marking Tape (Red, Warning) X X Transformer Box Pads X X Switch Foundations X X Handholes / Splice Boxes X X Primary Cable X X Switching Devices X X Terminations X X Ground System per NU Standards X X LOW VOLT. SECONDARY SYSTEM Trench / Backfill X X Conduit X X ¼-Inch Diameter Nylon Pull Line X X Marking Tape (Red, Warning) X X Handholes / Splice Boxes / Pedestals X X Secondary Cable / Wire X X Connectors X X Ground System per NU Standards X X CUSTOMER SERVICE LATERAL Trench / Backfill X X Conduit X X Service Conductors (to distribution facilities) X X Connectors (at transformer or secondary HH) X X Meter Socket (Manual Bypass Type) X X Ground System per NU Standards X X TRANSFORMERS Conventional X X Padmount X X STREET LIGHTING Trench / Backfill X X Conduit X X Bases X X Marking Tape (Red, Warning) X X MISCELLANEOUS Easement (granting of) X Easement drawings / documents X Environmental Permits / Releases X Contribution in Aid of Construction Payment X As-built drawings X STATE OF MASSACHUSETTS REQUIREMENT Call DIG SAFE AT 1-888-344-7233 X

16

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25

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to Secondary Vaultto Secondary VaultPrimary to TransformerPrimary to Transformerto Secondary Vaultto Secondary Vault

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Secondary toSecondary toRoad CrossingRoad Crossing

Typical Transformer &Service Vault Layout

(Figure 10)

88’’ Ground RodGround RodDriven InDriven In

The TrenchThe Trench

88’’ Ground RodGround RodDriven InDriven In

The TrenchThe Trench

88’’ min. apartmin. apart

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note:note:Silos set onSilos set on66”” of Stoneof Stone

note:note:All Conduit All Conduit 33”” PVCPVCSchedule 40Schedule 40

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45 or 22.545 or 22.5DegreeDegreeBendsBends

Property LineProperty Line

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House Service

House Service House

Ser

vice

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26

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RoadRoad

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For Specific For Specific InformationInformationDetailsDetailsSee Figure 10See Figure 10

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30

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5)

Single-Phase DB in ConduitUnderground/DB DesignSection 07.82

07.821

Distribution System Engineering ManualNortheast UtilitiesFebruary 2003

SCOPE - This Standard covers the general requirements for electric utility installation of single-phasedirect-buried cables in conduit.

GENERAL - The preferred method of providing electrical service is installation of direct -buried electrical cables inconduit. All installations of electrical cables in conduit shall adhere to the 1997 NESC (National Electrical SafetyCode), in addition to the following requirements:

1. TRENCH - Trench location shall be in as direct a line as possible without reverse bends between distributionfacilities and from the distribution facility to the customer service entrance. In order to minimize cable pullingforces, no more than two bends (not including riser at house or pole) exceeding a total change of 45 degreesshall be permitted.

a. The trench bottom shall be undisturbed or relatively smooth earth, well tamped, and free of any debristhat may be detrimental to the conduit. Excavation shall be of a size and extent to permit properinstallation of conduit and structures as required.

1) Where excavation is in rock, it shall be removed to 4 inches below the trench bottom. The overexcavation shall be replaced with a bedding of gravel, sand or clean, well tamped backfill.

2) Backfill shall not contain ashes, cinders, shells, frozen material, loose debris, or stones larger than 2 inches in maximum dimension. Backfill shall be compacted.

b. Conduit in the trench should have a 4 inch per 100 feet downward pitch toward the distribution facility, if physically possible. (This provides drainage away from service entrance, prevents stagnant water in duct.)

c. Trench shall be of such depth to accommodate 30 inches minimum cover for primary and secondarycables in conduit installed along the roadway easement, and 24 inches minimum cover for secondary orservice cables in conduit on private property.

2. CONDUIT - Standard conduit shall be minimum 3- inch diameter, rigid PVC, heavy wall, sunlight resistant(6% -7% titanium dioxide by weight), Schedule 40 as per NEMA TC2-1990.

a. Limit the number of electric utility conduits to a maximum of four per trench.

b. Install conduit, with all joints cemented, through knockout and extend 4 inches inside handhole.Terminate conduit run with end bell (e.g., SC 0177110 for 3- inch diameter). Conduit destination shall bepermanently marked on conduit end.

c. Gaps around conduit at knockout openings shall be sealed with cement mortar to prevent backfillentering the handhole.

d. A 1/4- inch-diameter nylon pull line shall be installed in each duct, including 10 feet of slack, and securedto conduit plug. Each end of the conduit shall be sealed with a conduit plug (e.g., SC 0175141 for 3- inchdiameter), and left accessible.

e. Bends in the conduit run shall have a minimum radius of 48 inches. This requirement does not includebends used at house or pole risers where the bend radius shall be a minimum of 24 inches, with 36 inches preferred.

3. PRIMARIES - For primary in conduit, a separate bare copper grounded neutral conductor and anodes arenot required.

a. Install primary in conduit at a minimum depth of 30 inches below finished grade.

32

Single-Phase DB in ConduitUnderground/DB DesignSection 07.82

07.822

Distribution System Engineering ManualNortheast UtilitiesFebruary 2003

b. Because of grounding requirements, each section of primary in conduit is limited to a maximum of 750 feet when other utilities are in the trench. When the electric utility is sole occupant in the trench,each section of primary in conduit is limited to a maximum length of 1700 feet. (Note: Length may belimited to 1000 feet if district utilizes 1000- foot emergency primary reel trailer.)

c. The Company reserves the right to limit runs where cable pulling forces exceed recommended maximums.

4. SECONDARIES and SERVICES - The Company reserves the right to limit services in conduit which requirea cable installation pulling force in excess of 2000 pounds.

a. Conduit for secondaries and services on private property shall be installed at a minimum depth of 24 inches below finished grade.

b. Secondaries or services in conduit, installed in the same trench as primaries or on public right -of -way,shall be at a minimum depth of 30 inches below finished grade.

2′2′

3′

6′

A clearance zone of 4′ wide x 3′ deep x 6′ high isrequired at the customer end of the service. Keepshrubs, debris, fences, and other structures clear ofthis area. (Refer to sketch at right.)

c.

a. The grounding interval for primaries in the trenchwith other utilities shall be not less than eight per mile.

b. For primaries with sole occupancy in the trench, thegrounding interval shall be not less than four per mile.

GROUNDING - Primaries shall be grounded at allhandholes, structures and enclosures.

5.

6. OTHER UTILITIES - Conduit, terminal enclosures, or structures belonging to other utilities shall be locatedsuch as to not interfere with electrical installations nor impede the operation and maintenance of electrical facilities.

a. The acceptable zone for installation of above-ground facilities belonging to other utilities is as shown below.

3.5′

3.5′

3′

10 FT

3 FT

b. No shrubs, fences, or permanent structures can be placedwithin 10 feet of the front and 3 feet of the sides and back ofpad-mounted transformers. The Company has the right toremove these obstructions without notice to the owner. Foradditional clearances see DTR 42.047 and DTR 42.061.

3 FT

ÄÄÄÄÄÄÄÄÄÄÄÄ

ÄÄÄÄÄÄÄÄÄÄÄÄ

ÄÄÄÄÄÄÄÄÄ

ÄÄÄÄÄÄÄÄÄROAD SIDE

FIELD SIDE

10′ EASEMENT1′

3′

ÄÄÄÄ

LEGEND:

Electric Company Pad or VaultAcceptable Zone for Installation of Above-Ground Facilities Belongingto Other Utilities

1′

33

FINISHED GRADE

WARNING SIGN

76/2/05

11/23/76

NORTHEAST UTILITIES CONSTRUCTION STANDARD

APPROVED

ORIGINAL

SECONDARY AND SERVICE RISERS − 600 VOLT CABLE

36″ MAX

NOTE 2

SCHEDULE 80 PVC, UNLESSSPECIFIED OTHERWISE

2″ NOTE 1

6′

DTR 12.057

CABLE GRIP ATTACHMENT

SECONDARY OR NEUTRALATTACHMENT

See DSEM Section 07.82for trench specifications

SCHEDULE 40 PVC

Notes1. Top of conduit to extend at least 2 inches above the neutral/secondary attachment.2. Seal conduit from water entry at top of riser for services installed in conduit for the entire run. See DTR 12.010.3. Steel conduit shall be grounded. If the steel elbow is installed in a nonmetallic conduit installation, it shall also be

grounded. Use 5/8″ x 8′ galvanized steel ground rod and ground clamp.4. Preferred location for riser placement is on field side of pole opposite the direction of traffic. Check riser path for

obstructions, and coordinate with other utilites for placement of risers and any equipment. (Road side of poleopposite the direction of traffic is reserved for road crossings.)

5. Contact the toll−free telephone number to locate buried cables before driving ground rods.

90° STEEL BEND(ELBOW)

#6 OR #4COPPER WIRE

GROUND CLAMP

GROUND RODNOTE 3

4″ MIN

TRAFFIC FLOW

CURB/EDGE OFROADWAY

A A

A − A

NOTE 4

RISER POLE

SEE DTR 04.075

MINIMUM 12″

______________________________________________________________________________________________________________________________________________________

| CONSTRUCTION STANDARD VARIATION | CONSTRUCTION UNIT IDENTIFIER |

|____________________________________________________________________________________________________________________________________________________|

| A SINGLE PHASE 600V 1/0 AL 3CT RISER DB | DTR12.057.3A |

| B SINGLE PHASE 600V 1/0 AL 3CT RISER UG | DTR12.057.3B |

| C SINGLE PHASE 600V 1/0 AL 3CT RISER SVC | DTR12.057.3C |

| D SINGLE PHASE 600V 4/0 AL 3CT RISER DB | DTR12.057.3D |

| E SINGLE PHASE 600V 4/0 AL 3CT RISER UG | DTR12.057.3E |

| F SINGLE PHASE 600V 4/0 AL 3CT RISER SVC | DTR12.057.3F |

| G SINGLE PHASE 600V 350 AL 3CT RISER DB | DTR12.057.3G |

| H SINGLE PHASE 600V 350 AL 3CT RISER UG | DTR12.057.3H |

| I SINGLE PHASE 600V 350 AL 3CT RISER SVC | DTR12.057.3I |

| J THREE PHASE 600V 1/0 AL 4CT RISER DB | DTR12.057.3J |

| K THREE PHASE 600V 1/0 AL 4CT RISER UG | DTR12.057.3K |

| L THREE PHASE 600V 1/0 AL 4CT RISER SVC | DTR12.057.3L |

| M THREE PHASE 600V 4/0 AL 4CT RISER DB | DTR12.057.3M |

|____________________________________________________________________________________________________________________________________________________|

| STOCK CODE QUANTITY | | | U=UNIT OF PROPERTY STOCK |

|________________________________________________________________| | | |

| M | L | K | J | I | H | G | F | E | D | C | B | A |UM| STOCK CODE DESCRIPTION | M=MINOR L=LOBBY CODE |

|____________________________________________________________________________________________________________________________________________________|

| | 20| 20| 20| 20| 20| 20| 20| 20| 20| 20| 20| 20|FT| CONDUIT PVC SCH 40 3 IN X 10 FT 3.500 OD BELLED | M M017471100 |

| | 10| 10| 10| 10| 10| 10| 10| 10| 10| 10| 10| 10|FT| CONDUIT PVC SCH 80 3 IN X 10 FT 2.900 ID BELLED | M M017458600 |

| 20| | | | | | | | | | | | |FT| CONDUIT PVC SCH 40 4 IN X 10 FT 4.500 OD BELLED | M M017471200 |

| 10| | | | | | | | | | | | |FT| CONDUIT PVC SCH 80 4 IN X 10 FT 3.826 ID BELLED | M M017458700 |

| | | | | 1| 1| 1| 1| 1| 1| 1| 1| 1|EA| BUSHING CONDUIT PVC RED 3-2 INV | L M017448600 |

| | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|EA| CLAMP GRND CPR F/4 SOL-2/0 STR 2 1/2 - 3 1/2 IN PIPE | L M017896400 |

| 1| | | | | | | | | | | | |EA| CLAMP GRND COND S/BRONZE 4 - 5 IN PIPE | L M017896500 |

| | 1| 1| | 1| 1| | 1| 1| | 1| 1| |EA| CONNECTOR CABLE GROUNDING COPPER #8-1/0 | L M017895700 |

| | 1| 1| | 1| 1| | 1| 1| | 1| 1| |EA| ROD GROUND G 5/8 IN X 8 FT | L M017536200 |

| 14| 14| 14| 14| 14| 14| 14| 14| 14| 14| 14| 14| 14|EA| SCREW DRIVE 0.25 IN 2.5 IN LG GALVANIZED HEX HEAD | L M019016600 |

| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|EA| SIGN WARNING UG ELECTRIC CBL 2.5 IN X 2.5 IN F/COND RISERS | L M019410700 |

| 1| | | 1| | | 1| | | 1| | | 1|EA| SIGN WARNING CBL ALIVE BY BACK FEED 4 IN X 7 IN | L M018455200 |

| | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|EA| STRAP PIPE POLE 3 IN GS 1 IN W 2-1/4 IN H 15D | L M017667300 |

| 7| | | | | | | | | | | | |EA| STRAP PIPE POLE 4 IN GS 1 IN W 2 1/4 IN H 15DD | L M017667400 |

| | | | | 1| 1| 1| 1| 1| 1| 1| 1| 1|EA| WEATHERHEAD FOR 2 IN PVC COND SERVICE ENTRANCE | L M018146700 |

| | 1| 1| | 1| 1| | 1| 1| | 1| 1| 1|LB| WIRE TIE BARE CU #6 SOLID | L M018034900 |

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|____________________________________________________________________________________________________________________________________________________|

| PAGE DTR12.057.3A / M | ORIGINAL ISSUE 11 / 23 / 76 |

| |__________________________________________________|

| 1 OF 1 | REVISION DATE 02 / 01 / 05 |

| |__________________________________________________|

| NORTHEAST UTILITIES CONSTRUCTION STANDARD ESTIMATING UNITS | APPROVED BY |

|____________________________________________________________________________________________________________________________________________________|

35

______________________________________________________________________________________________________________________________________________________


|____________________________________________________________________________________________________________________________________________________|

| N THREE PHASE 600V 4/0 AL 4CT RISER UG | DTR12.057.3N |

| O THREE PHASE 600V 4/0 AL 4CT RISER SVC | DTR12.057.3O |

| P THREE PHASE 600V 350 AL 4CT RISER DB | DTR12.057.3P |

| Q THREE PHASE 600V 350 AL 4CT RISER UG | DTR12.057.3Q |

| R THREE PHASE 600V 350 AL 4CT RISER SVC | DTR12.057.3R |

| | |

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|____________________________________________________________________________________________________________________________________________________|


|________________________________________________________________| | | |

| Z | Y | X | W | V | U | T | S | R | Q | P | O | N |UM| STOCK CODE DESCRIPTION | M=MINOR L=LOBBY CODE |

|____________________________________________________________________________________________________________________________________________________|

| | | | | | | | | | | | | |FT| CONDUIT PVC SCH 40 3 IN X 10 FT 3.500 OD BELLED | M M017471100 |

| | | | | | | | | | | | | |FT| CONDUIT PVC SCH 80 3 IN X 10 FT 2.900 ID BELLED | M M017458600 |

| | | | | | | | | 20| 20| 20| 20| 20|FT| CONDUIT PVC SCH 40 4 IN X 10 FT 4.500 OD BELLED | M M017471200 |

| | | | | | | | | 10| 10| 10| 10| 10|FT| CONDUIT PVC SCH 80 4 IN X 10 FT 3.826 ID BELLED | M M017458700 |

| | | | | | | | | | | | | |EA| BUSHING CONDUIT PVC RED 3-2 INV | L M017448600 |

| | | | | | | | | | | | | |EA| CLAMP GRND CPR F/4 SOL-2/0 STR 2 1/2 - 3 1/2 IN PIPE | L M017896400 |

| | | | | | | | | 1| 1| 1| 1| 1|EA| CLAMP GRND COND S/BRONZE 4 - 5 IN PIPE | L M017896500 |

| | | | | | | | | 1| 1| | 1| 1|EA| CONNECTOR CABLE GROUNDING COPPER #8-1/0 | L M017895700 |

| | | | | | | | | 1| 1| | 1| 1|EA| ROD GROUND G 5/8 IN X 8 FT | L M017536200 |

| | | | | | | | | 14| 14| 14| 14| 14|EA| SCREW DRIVE 0.25 IN 2.5 IN LG GALVANIZED HEX HEAD | L M019016600 |

| | | | | | | | | 1| 1| 1| 1| 1|EA| SIGN WARNING UG ELECTRIC CBL 2.5 IN X 2.5 IN F/COND RISERS | L M019410700 |

| | | | | | | | | | 1| 1| | 1|EA| SIGN WARNING CBL ALIVE BY BACK FEED 4 IN X 7 IN | L M018455200 |

| | | | | | | | | | | | | |EA| STRAP PIPE POLE 3 IN GS 1 IN W 2-1/4 IN H 15D | L M017667300 |

| | | | | | | | | 7| 7| 7| 7| 7|EA| STRAP PIPE POLE 4 IN GS 1 IN W 2 1/4 IN H 15DD | L M017667400 |

| | | | | | | | | | | | | |EA| WEATHERHEAD FOR 2 IN PVC COND SERVICE ENTRANCE | L M018146700 |

| | | | | | | | | 1| 1| | 1| 1|LB| WIRE TIE BARE CU #6 SOLID | L M018034900 |

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|____________________________________________________________________________________________________________________________________________________|

| PAGE DTR12.057.3N / R | ORIGINAL ISSUE 01 / 01 / 95 |

| |__________________________________________________|

| 1 OF 1 | REVISION DATE 02 / 01 / 05 |

| |__________________________________________________|


|____________________________________________________________________________________________________________________________________________________|

36

18″ MININ ALL

DIRECTIONS

SCOPE − All direct−buried primary cables shall be of the jacketed type. The cables may be random−laid with thesecondaries and other utilities under certain conditions, detailed in DTR 44.101.

INSTALLATION IN TRENCH − All direct−buried cables shall be installed at a depth of at least 30 inches in thefollowing order:1. Ensure that the bottom of the trench is well−tamped and free of rocks.2. Install the conduit, gluing all couplings.3. Install secondaries and other utility cables or conduits in the trench.4. Backfill with 12 inches clean fill not to contain stones larger than 2 inches in maximum diameter.5. Install cable warning tape 12 inches over the conduit.6. Fill in the remainder of the trench with native backfill.7. Install pull line, including 10 feet of slack, and secure to conduit plug at each end of conduit run.

DTR 50.103NORTHEAST UTILITIES CONSTRUCTION STANDARD

APPROVED

ORIGINAL SINGLE−PHASE PRIMARY CABLE INSTALLATIONDIRECT−BURIED − IN CONDUIT

Notes1. The trench shall be backfilled immediately following placement of the conduit.2. 1/4−inch−diameter nylon pull line and plastic conduit plugs to be supplied and installed by contractor.

30″ MIN CAUTION TAPE

(SECONDARIESAND/OR OTHERUTILITIES WITH ORWITHOUT CONDUIT)

ÂÂ

ÂÂÂÂ CONDUIT FOR PRIMARY CABLE

(SCHEDULE 40 PVC)

CROSS SECTION OF JOINT TRENCH

FINISHED GRADE

NATIVE BACKFILLNOTE 1

FUEL ORWATER LINE

CLEAN FILL

30″

12″

6/24/98

04/10/06

5

DIRECT−BURIED IN CONDUIT − INSTALLATION OF HANDHOLE SINGLE−PHASE CABLE − LOADBREAK JUNCTION CONNECTOR

FIBERGLASS COVERNOTE 1

APPROVED

ORIGINAL

Notes1. Install 36″ D x 36″ H round handhole, SPC H−020, and fiberglass cover, SPC C−710.2. Install conduit, with all joints cemented, through knockout to 4 inches inside handhole. Terminate conduit run with

end bell (e.g., SC 0177110 for 3−inch diameter). Conduit destination to be permanently marked on conduit end.Conduit shall be minimum 3−inch−diameter, Schedule 40 PVC. Limit four 4−inch−diameter conduits perknockout.

3. Gaps around conduit at knockout openings shall be sealed with cement mortar to prevent backfill from enteringhandhole.

4. Install a 1/4−inch−diameter nylon pull line in each duct, including 10 feet of slack, and secure to conduit plug(e.g., SC 0434785 for 3−inch diameter). Plugged conduit to be left accessible.

5. Install on virgin or well tamped gravel. Where poor soil exists, remove to 6 inches below bottom of handhole andbackfill with compacted clean gravel, free of foreign matter and debris, and extending 12 inches past edge ofstructure. Remaining backfill shall not contain ashes, frozen material, debris or stones larger than 2 inches inmaximum dimension.

6. When installing cable, utilize pulling eyelets provided in handhole.7. Galvanized steel ground rods to be installed in trench adjacent to handhole. See DTR 56.221.8. For loadbreak junction connector installation, refer to DTR 50.111 for pad−mounted or DTR 50.269 for

submersible.

PULL LINE IN CONDUITNOTE 4 12″

LIMIT FOUR CONDUITS MAXIMUMPER KNOCKOUT

COMPACTED FREEDRAINING GRAVEL

12″

DTR 50.107 38/10/06

10/22/99


6″ NOTE 5

FINISHED GRADE

8′ GROUND RODNOTE 7

SECTION A−A

36″


1/2″ : 1′

A A



PRIMARY

PRIMARY

PRIMARY

30″CABLE WARNING TAPE

CONDUIT PLUGNOTE 4

PRIMARYOPTIONAL SPARE FOR FUTURE USEOPTIONAL SPARE FOR FUTURE USE

12″

A

COMPACTED FREEDRAINING GRAVEL

″3

12″

DTR 58.185 38/10/06

10/22/99


APPROVED

ORIGINAL DIRECT−BURIED IN CONDUIT − INSTALLATION OF CONCRETE PADFOR SINGLE−PHASE PAD−MOUNTED TRANSFORMERS

Notes1. Install 42″ x 48″ x 4″ pad, SPC P−009 and 36″ D x 36″ H round handhole, SPC H−020.2. Install conduit, with all joints cemented, through knockout to 4 inches inside handhole. Terminate conduit run with

end bell (e.g., SC 0177110 for 3−inch diameter). Conduit destination to be permanently marked on conduit end.Conduit shall be minimum 3−inch−diameter, Schedule 40 PVC. Limit four 4−inch−diameter conduits per knockout.a. Primaries and secondaries in conduit to be installed at 30 inches below grade.b. Services in conduit to be installed at 24 inches below grade.c. Install a 1/4−inch−diameter nylon pull line in each duct, including 10 feet of slack, and secure to conduit plug

(e.g., SC 0434785 for 3−inch−diameter). Plugged duct to be left accessible.d. Gaps around conduit at knockout openings shall be sealed with cement mortar to prevent backfill from entering

handhole.3. Install on virgin or well tamped gravel. Where poor soil exists, excavate to 6 inches below bottom of handhole and

backfill with compacted clean gravel, free of foreign matter and debris, extending 12 inches past edge of structure.Remaining backfill shall not contain ashes, frozen material, debris, or stones larger than 2 inches in maximumdimension.

4. Galvanized steel ground rods to be installed in trench adjacent to handhole. See DTR 56.221.5. Refer to DTR 58.107 for transformer connections.6. Refer to DTR 54.203 for details on conduit stubs.

6″ NOTE 3

FINISHED GRADE

PULL LINEIN CONDUITNOTE 2c


SECTION A−A

36″

GROUND RODNOTE 4

1/2″ : 1′

A

GROUND RODNOTE 4


SECONDARIES AND/OR SERVICES

PRIMARIES AND/OR SECONDARIES

SECONDARIES AND/OR SERVICES

PRIMARIES AND/OR SECONDARIES


CABLE WARNING TAPE30″

CONDUIT PLUGNOTE 2c

______________________________________________________________________________________________________________________________________________________


|____________________________________________________________________________________________________________________________________________________|

| A NO PAD/HH 15 KV 25-167KVA XF-4POS CONN-SVC FROM XF | DTR58.185.3A |

| B NO PAD/HH 15 KV 25-167KVA XF-6POS CONN-SVC FROM XF | DTR58.185.3B |

| C NO PAD/HH 23 KV 25-167KVA XF-4POS CONN-SVC FROM XF | DTR58.185.3C |

| D NO PAD/HH 23 KV 25-167KVA XF-6POS CONN-SVC FROM XF | DTR58.185.3D |

| E NO PAD/HH 15 KV 25-167KVA XF-4POS CONN-SVC-PRI DE | DTR58.185.3E |

| F NO PAD/HH 15 KV 25-167KVA XF-6POS CONN-SVC-PRI DE | DTR58.185.3F |

| G NO PAD/HH 23 KV 25-167KVA XF-4POS CONN-SVC-PRI DE | DTR58.185.3G |

| H NO PAD/HH 23 KV 25-167KVA XF-6POS CONN-SVC-PRI DE | DTR58.185.3H |

| I 15 KV 25-167KVA XF-4 POS-SVC FROM XF W/PAD TOP | DTR58.185.3I |

| J 15 KV 25-167KVA XF-6 POS-SVC FROM XF W/PAD TOP | DTR58.185.3J |

| K 23 KV 25-167KVA XF-4 POS-SVC FROM XF W/PAD TOP | DTR58.185.3K |

| L 23 KV 25-167KVA XF-6 POS-SVC FROM XF W/PAD TOP | DTR58.185.3L |

| M 15 KV 25-167KVA XF-1PH FUT EXT/LOOP OPEN-USE W/A&B | DTR58.185.3M |

|____________________________________________________________________________________________________________________________________________________|


|________________________________________________________________| | | |


|____________________________________________________________________________________________________________________________________________________|

| | | | | | | | | | | | | |EA| HANDHOLE CONCR PCST 36 IN DIA X 36 IN HIGH | U M017498800 |

| | 1| 1| 1| 1| | | | | | | | |EA| PAD CONCRETE PRECAST 42 X 48 X 4 IN | U M017510900 |

| | | | | | 1| 1| | | | | | |EA| ARRESTER DISTR MOV ELBOW 18 KV | M M018071500 |

| 1| | | | | | | 1| 1| | | | |EA| ARRESTER SURGE 13.2 KV & 13.8 KV MGY SYS VOLT 12 KV RATING | M M040860800 |

| | | | 2| 2| | | 2| 2| | | 2| 2|EA| BUSHING CONN LBK 15 KV | M M017754700 |

| | 2| 2| | | 2| 2| | | 2| 2| | |EA| BUSHING CONN LBK 25 KV | M M017754800 |

| | | | 2| 2| | | 1| 1| | | 2| 2|EA| CONN ELBOW LBK 15 KV AL 1 STR 175 MIL POLY | M M017894600 |

| | 2| 2| | | 1| 1| | | 2| 2| | |EA| CONN ELBOW LBK 25 KV AL 1 STR 260 MIL POLY | M M017894800 |

| | | 3| | 3| | 3| | 3| | 3| | 3|EA| CONN TERMINAL AL 4 POS 4-500 TO 2H PAD | M M017922300 |

| | 3| | 3| | 3| | 3| | 3| | 3| |EA| CONN TERMINAL AL 6 POS 4-500 TO 2H PAD | M M017921200 |

| | | | | | | | | | | | | |EA| COVER HANDHOLE SOL FG 42 IN DIA | M M017481900 |

| | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|EA| COVER INSULATING HOOD VINYL 6.75 IN H X 2.25 IN DP X 10 IN | M M041661700 |

| 1| | | | | | | | | | | | |EA| PLUG STANDOFF FDTHR 15 KV F/LBK ELB CONN | M M017979500 |

| | | | | | | | | | | | | |EA| PLUG STANDOFF FDTHR 25 KV F/LBK ELB CONN | M M017979700 |

| 1| | | | | | | | | | | | |EA| RECEPTACLE DEADEND 15 KV F/LBK BSHG | M M017985400 |

| | | | | | | | | | | | | |EA| RECEPTACLE DEADEND 25 KV F/LBK BSHG | M M017985700 |

| | | | | | | | | | | | | |EA| STAND PARKING F/160 SERIES ESNA FITTINGS | M M018027100 |

| | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6|EA| BOLT MACHINE STS 1/2 X 1-3/4 IN | L M017443500 |

| | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|EA| CONN VISE BRZ 13-35 #14 SHEAR HEAD BOLT | L M017928600 |

| | | | | | | | | | | | | |EA| CONNECTOR CABLE GROUNDING COPPER #8-1/0 | L M017895700 |

| | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|EA| LOCK EQUIP T-P 2.5 IN RING AW SHEAR SCREW | L M018997800 |

| | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6|EA| NUT HEX STS 18-8 1/2-13 | L M017507300 |

| | | | | | | | | | | | | |EA| NUT PENTA S.S. UNC THEAD F/3/8 IN BOLT | L M017506100 |

| | | | | | 1| 1| 1| 1| 1| 1| 1| 1|EA| PROTECTOR CABLE VIR NYL FOR 3-6 IN DUCT | L M017533500 |

| | | | | | | | | | | | | |EA| ROD GROUND G 5/8 IN X 8 FT | L M017536200 |

| | 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2|EA| SEAL CABLE JACKET KIT F/SOLID DIELECTRIC CABLES 0.95-1.63 IN| L M018145600 |

| | | | | | | | | | | | | |EA| STUD HEX SHOULDER S.S. 3/8 IN UNC THREAD | L M017667000 |

| | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6|EA| WASHER LOCK STS 18-8 1/2 IN | L M017680100 |

| | 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12|EA| WASHER ROUND FLAT STS 18-8 1/2 IN BOLT | L M017702500 |

| | 1| 1| 1| 1| | | | | | | | |LB| WIRE TIE BARE CU #6 SOLID | L M018034900 |

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| PAGE DTR58.185.3A / M | ORIGINAL ISSUE 02 / 14 / 00 |

| |__________________________________________________|

| 1 OF 1 | REVISION DATE 11 / 04 / 03 |

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40

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|____________________________________________________________________________________________________________________________________________________|

| N 23 KV 25-167KVA XF-1PH FUT EXT/LOOP OPEN-USE W/C&D | DTR58.185.3N |

| O HANDHOLE & FIBERGLASS COVER & GROUND RODS | DTR58.185.3O |

| P 15 KV 25-167 KVA FUTURE TRANSFORMER | DTR58.185.3P |

| Q 23 KV 25-167 KVA FUTURE TRANSFORMER | DTR58.185.3Q |

| R 15 KV HANDHOLE WO/XF F/LOOP FEED | DTR58.185.3R |

| S 23 KV HANDHOLE WO/XF F/LOOP FEED | DTR58.185.3S |

| T 15 KV HANDHOLE WO/XF F/FUTURE DE | DTR58.185.3T |

| U 23 KV HANDHOLE WO/XF F/FUTURE DE | DTR58.185.3U |

| V HANDHOLE 36 IN W/CONCRETE PAD TOP & GROUND RODS | DTR58.185.3V |

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|________________________________________________________________| | | |

| Z | Y | X | W | V | U | T | S | R | Q | P | O | N |UM| STOCK CODE DESCRIPTION | M=MINOR L=LOBBY CODE |

|____________________________________________________________________________________________________________________________________________________|

| | | | | 1| | | | | | | 1| |EA| HANDHOLE CONCR PCST 36 IN DIA X 36 IN HIGH | U M017498800 |

| | | | | 1| | | | | | | | |EA| PAD CONCRETE PRECAST 42 X 48 X 4 IN | U M017510900 |

| | | | | | 1| | | | | | | 1|EA| ARRESTER DISTR MOV ELBOW 18 KV | M M018071500 |

| | | | | | | 1| | | | | | |EA| ARRESTER SURGE 13.2 KV & 13.8 KV MGY SYS VOLT 12 KV RATING | M M040860800 |

| | | | | | | | | | | | | |EA| BUSHING CONN LBK 15 KV | M M017754700 |

| | | | | | | | | | | | | |EA| BUSHING CONN LBK 25 KV | M M017754800 |

| | | | | | | 1| | 2| | 2| | |EA| CONN ELBOW LBK 15 KV AL 1 STR 175 MIL POLY | M M017894600 |

| | | | | | 1| | 2| | 2| | | |EA| CONN ELBOW LBK 25 KV AL 1 STR 260 MIL POLY | M M017894800 |

| | | | | | | | | | | | | |EA| CONN TERMINAL AL 4 POS 4-500 TO 2H PAD | M M017922300 |

| | | | | | | | | | | | | |EA| CONN TERMINAL AL 6 POS 4-500 TO 2H PAD | M M017921200 |

| | | | | | | | | | | | 1| |EA| COVER HANDHOLE SOL FG 42 IN DIA | M M017481900 |

| | | | | | | | | | | | | |EA| COVER INSULATING HOOD VINYL 6.75 IN H X 2.25 IN DP X 10 IN | M M041661700 |

| | | | | | | 1| | 1| | 1| | |EA| PLUG STANDOFF FDTHR 15 KV F/LBK ELB CONN | M M017979500 |

| | | | | | 1| | 1| | 1| | | 1|EA| PLUG STANDOFF FDTHR 25 KV F/LBK ELB CONN | M M017979700 |

| | | | | | | | | | | | | |EA| RECEPTACLE DEADEND 15 KV F/LBK BSHG | M M017985400 |

| | | | | | | | | | | | | 1|EA| RECEPTACLE DEADEND 25 KV F/LBK BSHG | M M017985700 |

| | | | | | 2| 2| 2| 2| 2| 2| | |EA| STAND PARKING F/160 SERIES ESNA FITTINGS | M M018027100 |

| | | | | | | | | | | | | |EA| BOLT MACHINE STS 1/2 X 1-3/4 IN | L M017443500 |

| | | | | | | | | | | | | |EA| CONN VISE BRZ 13-35 #14 SHEAR HEAD BOLT | L M017928600 |

| | | | | 2| | | | | | | 2| |EA| CONNECTOR CABLE GROUNDING COPPER #8-1/0 | L M017895700 |

| | | | | | | | | | | | | |EA| LOCK EQUIP T-P 2.5 IN RING AW SHEAR SCREW | L M018997800 |

| | | | | | | | | | | | | |EA| NUT HEX STS 18-8 1/2-13 | L M017507300 |

| | | | | | | | | | | | 4| |EA| NUT PENTA S.S. UNC THEAD F/3/8 IN BOLT | L M017506100 |

| | | | | | | | | | | | | |EA| PROTECTOR CABLE VIR NYL FOR 3-6 IN DUCT | L M017533500 |

| | | | | 2| | | | | | | 2| |EA| ROD GROUND G 5/8 IN X 8 FT | L M017536200 |

| | | | | | 1| 1| 2| 2| 2| 2| | |EA| SEAL CABLE JACKET KIT F/SOLID DIELECTRIC CABLES 0.95-1.63 IN| L M018145600 |

| | | | | | | | | | | | 4| |EA| STUD HEX SHOULDER S.S. 3/8 IN UNC THREAD | L M017667000 |

| | | | | | | | | | | | | |EA| WASHER LOCK STS 18-8 1/2 IN | L M017680100 |

| | | | | | | | | | | | | |EA| WASHER ROUND FLAT STS 18-8 1/2 IN BOLT | L M017702500 |

| | | | | 8| | | | | | | 8| |LB| WIRE TIE BARE CU #6 SOLID | L M018034900 |

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| PAGE DTR58.185.3N / V | ORIGINAL ISSUE 02 / 14 / 00 |

| |__________________________________________________|

| 1 OF 1 | REVISION DATE 11 / 04 / 03 |

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41

DTR 54.201 38/10/06

10/22/99


APPROVED

ORIGINAL DIRECT−BURIED IN CONDUIT − HANDHOLE ACROSS STREETSINGLE−PHASE CABLE − SECONDARY/SERVICE

Notes1. Install 36″ D x 36″ H round handhole, SPC H−020, and fiberglass cover, SPC C−710.2. Install conduit, with all joints cemented, through knockout to 4 inches inside handhole. Terminate conduit run

with end bell (e.g., SC 0177110 for 3−inch diameter). Conduit destination to be permanently marked on conduitend. Conduit shall be minimum 3−inch−diameter, Schedule 40 PVC. Limit four 4−inch−diameter conduits perknockout.


4. Install 1/4−inch−diameter nylon pull line in each duct, including 10 feet of slack, and secure to conduit plug (e.g., SC 0434785 for 3−inch diameter). Plugged conduit to be left accessible.

5. Install on virgin or well tamped gravel. Where poor soil exists, remove to 6 inches below bottom of handhole andbackfill with compacted clean gravel, free of foreign matter and debris, and extending 12 inches past edge ofstructure. Remaining backfill shall not contain ashes, frozen material, debris or stones larger than 2 inches inmaximum dimension.

6. When installing cable, utilize pulling eyelets provided in handhole.7. Refer to DTR 54.203 for details on conduit stubs.

1/2″ : 1′

COMPACTED, FREEDRAINING GRAVELNOTE 5

12″

6″

FINISHED GRADE

PULL LINEIN CONDUITNOTE 4

SECTION A−A

36″ 30″CABLE WARNING TAPE

CONDUIT PLUGNOTE 4

12″

FIBERGLASS COVERNOTE 1


A A

SECONDARY FROM TRANSFORMER

SERVICES

SERVICE

SERVICE

______________________________________________________________________________________________________________________________________________________


|____________________________________________________________________________________________________________________________________________________|

| A STD SERVICE CONCRETE HANDHOLE | DTR54.201.1A |

| B STD SERV BUS CONN 4 POS 4-500 MCM | DTR54.201.1B |

| C STD SERV BUS CONN 6 POS 4-500 MCM | DTR54.201.1C |

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|________________________________________________________________| | | |


|____________________________________________________________________________________________________________________________________________________|

| | | | | | | | | | | | | 1|EA| HANDHOLE CONCR PCST 36 IN DIA X 36 IN HIGH | U M017498800 |

| | | | | | | | | | | | | 1|EA| COVER HANDHOLE SOL FG 42 IN DIA | M M017481900 |

| | | | | | | | | | | | 3| |EA| CONN BUS INS 600V AL 4 POS 4-500MCM | L M017849900 |

| | | | | | | | | | | 3| | |EA| CONN BUS INS 600V AL 6 POS 4-500MCM | L M017850000 |

| | | | | | | | | | | | | 4|EA| NUT PENTA S.S. UNC THEAD F/3/8 IN BOLT | L M017506100 |

| | | | | | | | | | | | | 4|EA| STUD HEX SHOULDER S.S. 3/8 IN UNC THREAD | L M017667000 |

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| PAGE DTR54.201.1A / C | ORIGINAL ISSUE 02 / 15 / 00 |

| |__________________________________________________|

| 1 OF 1 | REVISION DATE 11 / 04 / 03 |

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43

PRIMARY CONDUITS BYPASSSECONDARY HANDHOLE

TEMPORARY DEADENDNOTE 7

LIMIT FOUR CONDUITSMAXIMUM PER KNOCKOUT

DTR 54.203 3NORTHEAST UTILITIES CONSTRUCTION STANDARD

APPROVED

ORIGINAL DIRECT−BURIED IN CONDUIT − INSTALLATION OF HANDHOLE600 VOLTS AND BELOW − SINGLE−PHASE − SECONDARY/SERVICE

Notes1. Install 36″ D x 36″ H round handhole SPC H−020, SC 0174988, and fiberglass cover SPC C−710, SC 0174819.2. Install on virgin or well tamped gravel. Where poor soil exists, remove to 6 inches below bottom of handhole and

backfill with compacted clean gravel, free of foreign matter and debris, and extending 12 inches past edge ofstructure.

3. Install conduit, with all joints cemented, through knockout to 4 inches inside handhole. Conduit destination to bepermanently marked on conduit end. Conduit shall be minimum 3−inch−diameter, Schedule 40 PVC. Limit four4−inch−diameter conduits per knockout.


5. Install a 1/4−inch−diameter nylon pull line in each duct, including 10 feet of slack, and secure to conduit plug(e.g., SC 0434785 for 3−inch diameter). Plugged conduit to be left accessible.

6. When installing cable, utilize pulling eyelets provided in handhole.7. Refer to DTR 54.118 for details on installation of temporary deadend.

1/2″ : 1′

SERVICES

SECONDARY

SERVICES

TO COMPLETE SERVICE − MATECUSTOMER CONDUIT TO EXISTING, JOINPULL LINES, SLIDE CONDUIT SLEEVE OVERBOTH ENDS AND SECURE WITH CONDUITCEMENT.

CONTRACTOR NOTE − FOR EASE INMATCHING CONDUIT LOCATION ANDELEVATION, START LAYING CONDUIT ATEASEMENT END AND WORK TOWARDCUSTOMER END.

22−1/2°

NOTE 5

CONDUIT SLEEVE COUPLING

STREET TAKING LINE

PR

OP

ER

TY

LIN

E

10′ E

AS

EM

EN

T

10′ LENGTH OF CONDUIT

THIS AREA FOR OTHER UTILITIES

8/10/06

10/22/99

______________________________________________________________________________________________________________________________________________________


|____________________________________________________________________________________________________________________________________________________|

| A HANDHOLE WITH 42 IN FG COVER | DTR54.203.0A |

| B STD SERVICE BUS CONN 4 POS 4-500MCM | DTR54.203.0B |

| C STD SERVICE BUS CONN 6 POS 4-500MCM | DTR54.203.0C |

| D 42 IN FIBERGLASS COVER ONLY | DTR54.203.0D |

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|________________________________________________________________| | | |


|____________________________________________________________________________________________________________________________________________________|

| | | | | | | | | | | | | 1|EA| HANDHOLE CONCR PCST 36 IN DIA X 36 IN HIGH | U M017498800 |

| | | | | | | | | | 1| | | 1|EA| COVER HANDHOLE SOL FG 42 IN DIA | M M017481900 |

| | | | | | | | | | 4| | | |EA| BOLT MACHINE PNHD STS 3/8 X 1 IN | L M017438800 |

| | | | | | | | | | | | 3| |EA| CONN BUS INS 600V AL 4 POS 4-500MCM | L M017849900 |

| | | | | | | | | | | 3| | |EA| CONN BUS INS 600V AL 6 POS 4-500MCM | L M017850000 |

| | | | | | | | | | | | | 4|EA| NUT PENTA S.S. UNC THEAD F/3/8 IN BOLT | L M017506100 |

| | | | | | | | | | | | | 4|EA| STUD HEX SHOULDER S.S. 3/8 IN UNC THREAD | L M017667000 |

| | | | | | | | | | 4| | | |EA| WASHER ROUND FLAT G 3/8 IN BOLT | L M017683800 |

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|____________________________________________________________________________________________________________________________________________________|

| PAGE DTR54.203.0A / D | ORIGINAL ISSUE 02 / 14 / 00 |

| |__________________________________________________|

| 1 OF 1 | REVISION DATE 11 / 04 / 03 |

| |__________________________________________________|


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45

1/24/06

6/24/98


APPROVED

ORIGINAL

DTR 54.118

ËËËËËËËË

DEPTHNOTE 4

UNDERGROUND CABLE SIGN,TO BE INSTALLED BYNORTHEAST UTILITIES

3″ PVC DEAD−END CAP

WELL TAMPED EARTH

FINISHED GRADE

LOCATION TAG, TO BE INSTALLED BYNORTHEAST UTILITIES

1/4″ NYLON PULL LINE

PLASTIC CONDUIT PLUG CONDUIT, SCHEDULE 40 PVC

3

WARNING TAPECT/MA − LOCATE 12″ABOVE TOP OF CONDUIT.NH − LOCATE 12″ BELOWFINISHED GRADE.

Notes1. Install temporary dead−end cap where customer’s trench ends on private property if customer is not ready

for service.2. Remove PVC dead−end cap, extend conduit, and pull cable when service is extended to future building, vault,

or transformer.3. The contractor is responsible for all material shown, unless noted otherwise. Location tag and underground cable

sign to be supplied and installed by Northeast Utilities.4. Minimum burial depth shall be as follows: CT/MA − 24 inches for secondary cable and 30 inches for primary

cable. NH − 30 inches for secondary cable and 36 inches for primary cable.

DIRECT−BURIED CONDUIT SYSTEM − TEMPORARY DEAD−END CAP

– SPC C–710 –

COVER – HANDHOLE – HEXAGONS AND ROUND42–INCH DIAMETER

3NORTHEAST UTILITIES

APPROVED

ORIGINAL

MATERIAL SPECIFICATION6/14/97

5/13/86

ELECTRIC

Notes1. Cover shall conform to ASTM D790.2. DESIGN LOADING shall be 4,500 pounds applied at the center of the cover over a 6″ X 6″ area. The cover will

be supported by a 36–inch ID ring. The total deflection of the cover shall not exceed 4 inches with load appliedfor 5 minutes.

3. Plywood core designs shall be encapsulated in a fiberglass–reinforced polyester laminate a minimum of 1/8 inchthick on all surfaces, consisting of a spray up of chopped glass and resin totaling 5 ounces per square foot ofsurface. The glass content will be a minimum of 25 percent on the top, and will be increased on the bottom ifnecessary to meet the design loading specified in NOTE 1. The plywood core will comply with the AmericanPlywood Association Standard PS 1–1974, DFPA GRADE, GROUP 1, EXTERIOR C–C or better.

4. The cover shall be permanently embossed with both manufacturer’s name and the word “ELECTRIC” as shown.5. The resin and the gel coat will be pigmented dark green, and there shall be no exposed glass on any surface.6. A stainless steel or brass washer, 1–3/8 inch OD with a 5/8–inch hole, will be epoxied into the pentahead

recess. There should be no exposed wood in the recess.

5/8″ MAX1/4″ MIN

NON–SKIDSURFACE4″

SEE DETAIL A

AA

5/8″

38–1/2″42″

SECTION A–A

DETAIL A

42″ DIAMETERCOVER

38–1/2″ BOLTCIRCLE NOTE 3

1–1/2″ DIA5/8″ DIA

ELECTRIC

– SPC E–953 –

EXTENSION – HANDHOLE/VAULT – PRECAST CONCRETE180 DEGREE SEGMENT X 36″ DIAMETER X 4″ HIGH


APPROVED

ORIGINAL


8/5/70

NOTES1. Two zinc alloy iron inserts 3/8 inch – 16 x 1–1/2 inches on 38–1/2 inch bolt circle.2. Two holes equally spaced on 38–1/2 inch bolt circle.3. Final 28 day concrete strength 4000 psi.4. Concrete and concrete design shall be in accordance with ACI 318–1986 latest revision thereof.5. Manufacturer’s identification and month/year when manufactured shall be legibly marked in/on concrete on the

inner side. 6. Construction tolerances shall allow for the mating of two 180 degree segments, on NU SPC’s H–020 and V–025,

to achieve a 360 degree extension.

18″

45°

NOTE 1

67–1/2°

A

A

22–1/2°

NOTE 2

#4 REBAR

NOTE 1

3″

4″

ÇÇÇÇÇÇ

3″3/4″

2″

38–1/2″ DIAMETER BOLT CIRCLE

NOTE 2

1″GALVANIZED WASHER1–3/4″ DIAMETER11/16″ HOLE

SECTION A–A

HANDHOLE/VAULT EXTENSION(FOR GRADE ADJUSTMENT)

22–1/2°

22–1/2°

NOTE 2

SPC H–020

HANDHOLE – ROUND – PRECAST CONCRETE36″ DIAMETER x 36″ HIGH


APPROVED

ORIGINAL


5/13/86

NOTE 9

3″ x 6″–W2.9 x W2.9, WELDED STEELWIRE FABRIC, AS PER ASTM A–185(ALTERNATE – 6″ x 6″–W1.4 x W1.4, W/TWO 1/4″ DIA REBAR HOOPS CENTERED AT 6″ AROUND EYELETS)

10″

Notes1. Concrete and concrete design shall be in accordance with ACI 318–1995.2. Concrete strength 5000 psi at 28 days. Air entrainment 6 to 8 percent.3. Four zinc alloy inserts 3/8″ – 16 x 1–3/8″ equally spaced on 38–1/2″ bolt circle. 4. Four zinc alloy inserts 5/8″ – 11 x 1–11/16″ equally spaced on 38–1/2″ bolt circle. 5. Eight zinc alloy inserts 3/8″ – 16 x 1–3/8″.6. Four eyelets, for use as pulling points, shall be installed adjacent to and centered above knockouts as shown.7. Manufacturer’s identification and month/year when manufactured shall be legibly marked in/on concrete on the

outside upper part. 8. Location of each knockout shall be identifiable from exterior of handhole by providing a 3″ diameter circle

imprinted 1/4″ deep into the concrete. Center of the imprinted circle shall be located at center of each knockout.9. All knockouts shall have a web thickness not to exceed 3/4″ ±1/8″. Knockouts to be free of reinforcement.

10. The two recesses 12″ from top are for use with adjustable lifter tool only. 11. Eyelets and zinc alloy inserts not to be used for lifting.

4″

22–1/2°

c

22–1/2°

NOTE 4

45°

NOTE 3

NOTE 5

NOTE 9

A A

36″

NOTE 7

NOTE 4 NOTE 3

NOTE 5

3″

10″

15″

12″3″

9″

12″

9″

SECTION A–A

NOTE 6

18″

NOTE 8

3″

3″ x 3″ x 1/4″ CURVED SQUARE WASHER, GALV, W/13/16″ HOLE, AS PER EEI TDJ10

3″ x 6″–W2.9 x W2.9, WELDED STEELWIRE FABRIC, AS PER ASTM A–185(ALTERNATE – 6″ x 6″–W1.4 x W1.4, W/TWO 1/4″ DIA REBAR HOOPSCENTERED AT 6″ AROUND EYELETS. SEE SECTION B–B)

5/8″–11, 5″ LONG, MACHINE BOLT, GALV,W/SQUARE NUT, AS PER ANSI C135.1–1979,FOR USE W/EYELET, STANDARD, LONG,GALV, AS PER ANSI C135.5–1987

SECTION B–B

1/4″ REBAR

(SHOWS ALTERNATE REBAR LOCATION)

B

B

6″

NOTE 8

NOTE 4

B

B

36″

6″

8″

ML 1245 D

– SPC P–009 –

PAD – PRECAST CONCRETE – TRANSFORMER167 KVA MAXIMUM – 42 ″ X 48″ X 4″


APPROVED

ORIGINAL


4/23/70

NOTES1. Final 28 day concrete strength to be 5000 psi.2. A 3/4 inch coil loop insert (Dayton F63) with an insert locator plug (Dayton T21) for lifting the pad at the center

of gravity with a swivel plate.3. Manufacturer’s identification and month/year when manufactured shall be legibly marked in/on concrete in the

top near the center.4. Concrete and concrete design shall be in accordance with ACI 318–1986.

c

28″

26–1/2″

NOTES 2&3

A A

42″

48″

2″2″

2″

16″

6″

28″

2″

14–1/2″

6″ X 6″ 10 GAUGEWIRE MESH REINFORCEMENT

#4 BAR

36″

36″

26–1/2″

7″ 7″

4″

1/4″

SECTION A–A

3/4″

ML 1245

PAD – PLUG – PRECAST CONCRETE – 16 ″ X 28″ X 4″FOR THE 42″ X 48″ X 4″ PAD


APPROVED

ORIGINAL


5/13/86

SPC P–010

NOTES1. Final 28 day concrete strength to be 3500 psi minimum.2. A 3/4 inch coil loop insert (Dayton F–63) with an insert locator plug (Dayton T–21) for lifting the pad at the center of gravity with a swivel plate.3. Threaded insert shall be plastic capped to stop dirt buildup.4. Threaded inserts shall be greased on inside to prevent corrosion.5. Manufacturer’s name and month/year of construction shall be legibly marked in concrete on the bottom.

B

B

A A

25″ #3 REBAR

26″

28″

4″

13″ #3 REBAR

1–1/4″

13–3/4″

16″

1/8″

SECTION A–A SECTION B–B

ML 145 D

– SPC P–017 –

PAD – ENCLOSURE – PRECAST CONCRETE48″ X 48″ X 4″


APPROVED

ORIGINAL


2/17/76

9″

NOTES1. Final 28 day concrete strength to be 5000 psi.2. Manufacturer’s identification and month/year when manufactured shall be legibly marked in/on concrete in the

top within 4 inches of the opening.3. Concrete and concrete design shall be in accordance with ACI 318–1986.4. Two 3/4 inch coil loop inserts (Dayton F63) with an insert locator plug (Dayton T21) for lifting the pad with a

swivel plate.

30″

48″

NOTE 4

9″

A A

BB

27″

48″

37–3/4″

24″

39–1/2″

32″

5–1/8″

24″ 24″

9″9″ 30″

38–1/2″

EIGHT ZINC ALLOY INSERTS5/8″–11 X 1–1/2″

5–1/8″

8–1/2″ 8–1/2″

#4 REBAR 40″ X 40″1/4″ 3/4″

4″

4–3/4″ 4–3/4″

24″

SECTION B–B

SECTION A–A

3/4″

2″1″

GALVANIZEDWASHER1–3/4″ DIA11/16″ HOLE

DTR 50.341 211/2/99

6/22/90


APPROVED

ORIGINAL

HILL HOLDER – DIRECT–BURIED SYSTEM

Notes1. Use with any single–phase pad–mounted or submersible transformer or single–phase switchgear.2. Depending on steepness of the grade, select either 16– or 32–inch–high model.3. Always place hill holder with the back toward the grade. Do not install with the side of the hill holder facing the

grade; this product is not designed to support side loads.4. Make sure that 2–inch flange is properly secured with an adequate amount of soil to prevent the hill holder from

being removed or vandalized.

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| A HILLHOLDER 16" GRADE ADJUSTMENT | DTR50.341.0A |

| B HILLHOLDER 32" GRADE ADJUSTMENT | DTR50.341.0B |

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| | | | | | | | | | | | | 1|EA| HOLDER HILL FG 16 X 44 X 52 IN | M M018340600 |

| | | | | | | | | | | | 1| |EA| HOLDER HILL FG 32 X 44 X 52 IN | M M018340700 |

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| PAGE DTR50.341.0A / B | ML | ORIGINAL ISSUE 4 / 13 / 91 |

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| 1 OF 1 | REVISION DATE 1 / 1 / 97 |

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54

DTR 50.401 512/18/00

5/25/88


APPROVED

ORIGINAL COVER AND GRADE EXTENSIONSROUND HANDHOLE

Notes1. Fiberglass cover – Install stud with 1–1/4–inch end down and 1–inch end up. 2. Use extensions for grade adjustments only. 3. Use stud and penta nut with fiberglass cover.

PENTA NUTSC 0175061

HANDHOLE COVERSC 0174819(SEE SPC C–710)

HEX–SHOULDER STUDSC 0176670

4″ EXTENSIONSC 0174870(SEE SPC E–953)

HANDHOLE, 36″ x 36″SC 0174988(SEE SPC H–020)

4″ BOLT FOR ONE EXTENSIONSC 0174355(8″ BOLT FOR TWO EXTENSIONSSC 0174356)

ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ

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|____________________________________________________________________________________________________________________________________________________|

| A HANDHOLE WITH 42IN FIBERGLASS COVER | DTR50.401.1A |

| B 4 INCH CONCRETE EXTENSION | DTR50.401.1B |

| C 8 INCH CONCRETE EXTENSION | DTR50.401.1C |

| D FIBERGLASS 42" COVER DB | DTR50.401.1D |

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| | | | | | | | | | | | | 1|EA| HANDHOLE CONCR PCST 36IN DIA X 36IN HIGH | U M017498800 |

| | | | | | | | | | 1| | | 1|EA| COVER HANDHOLE SOL FG 42 IN DIA | M M017481900 |

| | | | | | | | | | | 4| 2| |EA| EXTENSION VLT/HH CONCR 1/2 SEG 36IN X 4IN | M M017487000 |

| | | | | | | | | | | | 4| |EA| BOLT MACHINE G 5/8 X 4 IN | L M017435500 |

| | | | | | | | | | | 4| | |EA| BOLT MACHINE G 5/8 X 8 IN | L M017435600 |

| | | | | | | | | | | | | 4|EA| NUT PENTA S.S. UNC THEAD F/3/8" BOLT | L M017506100 |

| | | | | | | | | | | | | 4|EA| STUD HEX SHOULDER S.S. 3/8" UNC THREAD | L M017667000 |

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| PAGE DTR50.401.1A / D | | ORIGINAL ISSUE 9 / 3 / 88 |

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| 1 OF 1 | REVISION DATE 2 / 15 / 01 |

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56

GRADE ADJUSTMENTSINGLE–PHASE – PAD–MOUNTED TRANSFORMER

Notes1. Make sure that there is enough slack in the primary and secondary cables to allow for raising the transformer.2. The split pad is to be placed on top of the existing concrete pad.3. For additional height, a second or third split pad can be installed, one over the other.4. The transformer can be secured to the split pad with transformer clips installed in the adjustable struts with

3/8″ x 1–1/2″ bronze bolts, SC 0174429.

DTR 58.195 311/2/99

9/28/87


APPROVED

ORIGINAL

4″

SECURE HALVES OFSPLIT PAD WITHSUPPLIED BOLTS

______________________________________________________________________________________________________________________________________________________


|____________________________________________________________________________________________________________________________________________________|

| A 4" GRADE ADJ FOR 1 PH PAD TRANS DB | DTR58.195.0A |

| B 4" GRADE ADJ FOR 1 PH PAD TRANS UG | DTR58.195.0B |

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| | | | | | | | | | | | 1| 1|EA| PAD TOP SPLIT FG/CONC 42X48X4" | M M017509900 |

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| PAGE DTR58.195.0A / B | ML | ORIGINAL ISSUE 4 / 13 / 91 |

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| 1 OF 1 | REVISION DATE 1 / 1 / 97 |

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58

Documents

Specifications and Installation Guide - Eversource system be backfilled prior to the ... (Electrical Distribution to New Residential ... Inspect the underground conduit system and