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UNITED STATES DEPARTMENT OF AGRICULTURE

Rural Utilities Service

**BULLETIN 1753F-153**

**SUBJECT:** **[Specifications and Drawings for Service
Installations]{.underline}**

> **[at Customer Access Locations, RUS Form 515d]{.underline}**

**TO:** All Telecommunications Borrowers

RUS Telecommunications Staff

**EFFECTIVE DATE:** September 17, 2001

**OFFICE OF PRIMARY INTEREST:** Outside Plant Branch, Telecommunications
Standards Division.

**AVAILABILITY:** This bulletin supersedes RUS Bulletin 345-154,
Specifications and Drawings for Service Entrance and Station Protector
Installation, RUS Form 515g, issued May 25, 1989.

This bulletin can be accessed via the Internet at
http://www.usda.gov/rus/telecom/publications/bulletins.htm

**PURPOSE:** This specification provides Contractors, Engineers, and RUS
Borrowers with assembly unit descriptions, materials, construction and
installation, and drawings for service installations at customer access
locations associated with RUS Form 515, Telecommunications System
Construction Contract.

[Roberta D. Purcell]{.underline} [8/21/01]{.underline}

### Roberta D. Purcell Date

Assistant Administrator

Telecommunications Program

**RUS Bulletin 1753F-153**

**Specifications and Drawings for Service Installations at**

**Customer Access Locations, RUS Form 515d**

**TABLE OF CONTENTS**

# [Page]{.underline}

List of Changes i

Part I -- Description of Assembly Units and Proposal and

Contract Sections 1

Part II -- Specifications and Materials 7

1\. Scope 7

2\. General 7

3\. Miscellaneous 7

Part III -- Specifications for Construction and Installation 7

1\. General 7

2\. Aerial Service Entrances 8

3\. Buried Service Entrances 8

4\. NID 9

List of Construction Drawings and Plans 10

INDEX

###  ASSEMBLY UNITS:

Underground Cable

###  CONSTRUCTION:

Service Entrances

Station Protector Installation

###  SPECIFICATIONS AND STANDARDS:

Outside Plant

**WIRE:**

Buried Service

Drop Parallel Conductor

LIST OF CHANGES

1\. Addition of BM50 unit, Buried Service Wire or Cable Installation to
Pole-Mounted Wire Terminal Assembly Unit.

2\. Provision of suffix \"D\" to BM60 and BM61 units to indicate
directional boring.

3\. Provision of suffix \"P\" to the BM60 unit to indicate plastic pipe.

4\. Modification of the BM61 unit allowing the Engineer to specify the
maximum bore diameter in parentheses.

5\. Provision of suffix \"E\" to the BM71 unit to indicate extra depth
in rock.

5\. Modification of Section NI to become Section NID, Network Interface
Device Assembly Units. Redefined unit to included protectors as part of
the unit, as well as mounting arrangements for mobile home installation.

6\. Elimination of Section P. Protectors are now included as part of
Section NID.

7\. Modification of Section SE as follows:

\(a\) Compensation will be on a per foot basis;

\(b\) Elimination of the SEK unit. This unit is now covered under two
separate units: the SEA unit and the BM50 unit.

8\. In part III, section 3, changed minimum depth of buried service
entrances from 24 inches to 12 inches in soil.

9\. In part III, section 4, modified section to cover NID\'s in place of
station protection.

10\. Modification of the NID2 and NID3 assembly unit drawings to
indicate the Power Company's method of providing the electrical system
ground connection.

For editorial or other minor technical changes, refer to the body of the
document.

This page is intentionally left blank

**Part I - DESCRIPTION OF ASSEMBLY UNITS AND PROPOSAL AND**

**CONTRACT SECTIONS**

The Contractor's Proposal form is divided into sections and the sections
approved for construction shall be listed in the Construction Agreement
by the Owner. The sections are as follows:

Section BM - Miscellaneous Assembly Units

Section NID - Network Interface Device Assembly Units

Section SE - Service Entrance Assembly Units

Section W - Rearrangement Units

Section XX - Nonreusable Materials Removal Units

Section XZ - Reusable Materials Removal Units

Each assembly unit includes only the materials listed on the
corresponding Installation and Construction Guide Drawings or
description of unit where no drawing exists. The various installation
and construction units which are included in the Proposal and upon which
quotations are required are defined by the following descriptions:

[Section BM -- MISCELLANEOUS ASSEMBLY UNITS]{.underline}

Consists of all labor and material to construct and install the units
defined individually below required for the installation and
construction of the service entrance portions of the Project:

BM50( ) [Buried Service Wire or Cable Installation to Pole-Mounted Wire
Terminal Assembly Unit]{.underline} -- Consists of the necessary labor
and material to install a buried wire or cable from a buried plant
housing to a pole mounted wire terminal. This unit includes the
installation of pole mounted buried wire or cable, a pole mounted wire
terminal, and the necessary wire work at the wire terminal (see assembly
unit drawing BM50). Pair count of the terminal size shall be indicated
in the parentheses. Installation of the buried plant housing and
splicing of the pole mounted buried wire or cable inside the buried
plant housing shall be compensated under separate units.

BM60( ) [Underground Pipe Crossing Assembly Unit]{.underline} --
Consists of one (1) lineal foot \[0.305 meters (m)\] of steel pipe, with
the inside diameter in inches (meters) specified in parentheses,
installed in place. This unit includes the pushing of pipe and any
excavation, backfilling and tamping necessary for the installation of
the pipe. The pipe shall be installed at the depth specified by the
Engineer. The installed pipe shall be free of any sharp projections to
avoid damage to the outer jacket of the buried cable or wire during its
installation in the pipe. The contractor will be compensated for labor
and material for the buried cable or wire under separate units. Options
designated by the following suffixes apply:

[Suffix]{.underline} [Description]{.underline}

D Directional boring required.

P Plastic pipe required.

BM61( ) [Underground Non-Pipe Crossing Assembly Unit]{.underline} -
Consists of the labor in providing a hole in soil one (1) foot (0.305 m)
in length and of a diameter in inches (meters) specified in parentheses.
The depth of the hole below the surface of the ground shall be specified
by the Engineer. This unit includes any excavation, backfilling and
tamping necessary for the installation. This unit may be used where the
permanent installation of a steel or plastic pipe under the BM60 unit is
not required. The contractor will be compensated for labor and material
for the buried cable or wire under separate units. Where directional
boring is required, the unit shall be suffixed by the letter \"D\".

BM71 [Rock Excavating Unit]{.underline} - Consists of one (1) lineal
foot (0.305 m) of trenching, blasting, sawing, etc., measured parallel
to the surface of the ground, in rock, including excavation, backfilling
and tamping to place cable or wire to the depth specified in the
Specifications. This unit includes all material and labor required in
the repair and/or replacement of streets, roads, sidewalks, drives,
fences, lawns, shrubbery, watermains, pipes, pipelines and contents,
underground power and telecommunications facilities and any other
property damaged by the excavating, except loss or damage to crops,
gardens, trees or ornamental flowers in the construction corridor
necessarily incident to the construction of the Project and not caused
by the negligence of the Contractor. This unit will be specified by the
Engineer only when field conditions at the site show the existence of
rock to a depth required by the specification, which cannot be trenched,
plowed or ripped. If extra depth is required, the unit shall be suffixed
by \"E( )\", where the required depth in rock shall be shown inside the
parentheses.

The contractor will be compensated for labor and material for the buried
cable or wire under separate units.

BM83 [Buried Service Guard]{.underline} - Consists of a guard, including
fasteners, mounted in place over the buried wire or cable and/or ground
wire, as shown on the Construction Sheets (see unit drawing BM83).

### Section NID - NETWORK INTERFACE DEVICE ASSEMBLY UNITS

Consists of a network interface device (NID) installed in place, with
necessary hardware and jumpers connected, and where required, furnishing
and installing a ground and/or bond in accordance with the Construction
Sheets. The assembly units are equipped with modular jacks and fuseless
protectors.

The assembly unit is defined as follows:

NID ( ) Network Interface Device

The number specified in the parentheses shall indicate the number of
modular jacks and the number of fuseless protectors

The mounting arrangement suffixes for the NID unit are as follows:

#### Suffix Description

1 Electric System Ground with Bond to Metallic Water

> Pipe System (see unit drawing NID1)

2 Electric System Ground Rod

> (see unit drawing NID2)

3 Electric System Grounding Conductor

> (see unit drawing NID3)

4 Telco Ground Rod with Sub-surface Bond to Electric

> Ground (see unit drawing NID4)

5 Telco Ground Rod with Above-surface Bond to

> Electric Ground (see unit drawing NID5)

# 

#  6 Telco Ground Rod with Bond to Water Pipe - no 

#  Electric Service at Site (see unit drawing NID6)

#  7 Mobile Home Installation -- within 35 ft of

Electric Service Equipment

(see unit drawing NID7)

8 Mobile Home Installation -- over 35 ft from

Electric Service Equipment

(see unit drawing NID7)

G Indicates Gas-Tube station protectors are to be

> Furnished

I Indicates inside mounting (see detailed drawings

> as specified by the Engineer)

[Examples]{.underline}:

> NID(2)3 NID containing 2 modular jacks and 2 fuseless station
> protectors with electric system grounding conductor
>
> NID(6)G1 NID containing 6 modular jacks and 6 fuseless station
> protectors having gas tube arrestors with electric system ground with
> bond to metallic water pipe system.

[Section SE - SERVICE ENTRANCE ASSEMBLY UNITS]{.underline}

Consists of one (1) foot (0.305 m) of service entrance wire or cable in
place from the network interface device (NID) to either filled terminal
blocks in a ready-access closure or buried plant housing; or buried
cable pair. This unit includes all clamps, rings, hooks and other
hardware required for attachment to poles, buried plant housings and
buildings. This unit does not include the labor and material for
connecting the wire or cable to the NID unless specified by the Engineer
and suffixed by the letter \"P\". This unit does not include cable
splicing. For compensation purposes, the length of service entrance wire
or cable includes the sum of the distance between supporting structures
and when required the vertical runs on buildings and poles. The service
entrance units are further defined as follows:

SEA [Aerial Service Entrance from Aerial Cable Assembly
Unit]{.underline} - This unit includes the labor and material for an
aerial service entrance extending from aerial plant. It includes the
labor and material for the installation of aerial service wire connected
to the filled terminal blocks of the ready access closure or pole
mounted wire terminal in accordance with the Construction Sheets.

Tree trimming necessary for installing the aerial service wire is also
included and shall be performed in accordance with the instructions of
the Engineer.

SEB [Buried Service Entrance Assembly Unit]{.underline} - This unit
includes the labor and material for placement of buried service wire or
cable to the depth set forth in the specifications and the backfilling
and tamping of the trench and for the repair and/or replacement of all
fences, shrubbery, drives, lawns, watermains, pipes, sidewalks,
pipelines and contents, underground power and telecommunications
facilities, pavements, roadways, buried sewerage and drainage
facilities, and any other property damaged during the installation of
Service Entrances.

##### [Suffix]{.underline} [Description]{.underline}

P When the units above are suffixed with the letter \"P\" the labor and
material for connecting the conductors, and the shield for buried
service wire or cable, to the station protector of the NID are included.
This work shall be done in accordance with the Construction Sheets.

Each service entrance assembly unit is listed in accordance with the
number of pairs and gauge of conductors. Each unit is prefixed by the
letters SE. The following illustrations indicate the method of
designating the material required.

SEA1-18 Indicates an aerial service entrance assembly unit from an
aerial cable utilizing a one-pair, parallel conductor, 18 gauge aerial
service wire.

SEB2-22 Indicates a buried service entrance assembly unit utilizing a
two-pair, 22 gauge filled buried wire.

SEBP2-22 Indicates a buried service entrance assembly unit utilizing a
two-pair, 22 gauge filled buried wire connected to the station protector
of the NID.

[Section W - REARRANGEMENT UNITS]{.underline}

Specific rearrangement units shall be designated and described by the
Engineer on the \"List of Special Arrangement Units\" table of RUS Form
515. Existing plant assembly units to be rearranged are designated by a
prefix \"W\".

[Section XX -- NONREUSABLE MATERIALS REMOVAL UNITS]{.underline}

These units cover the furnishing of all labor for the removal of
construction assembly units from existing lines, and transportation of
the removed materials for proper disposal. The Contractor will be
permitted to use the most economical method of removing these units. The
removal units are designated by the prefix \"XX\" followed by the
assembly unit designation of the unit to be removed.

[Section XZ -- REUSABLE MATERIALS REMOVAL UNITS]{.underline}

These units cover the furnishing of all labor for the removal of
construction assembly units from existing lines and all labor and
transportation of the removed materials to a location designated by the
Owner. The Contractor will be charged by the Owner for the materials
removed under this section at the unit material values shown in column 2
of the \"Value and Disposition of Units to be Removed\" table of RUS
Form 515. The number of units to be charged to the Contractor and the
extended value of these units are shown in columns 3 and 4. Such charges
will be placed against the Contractor as assembly units are removed and
the unit material values will be deducted from the total value of
assembly units constructed on this project for determination of the work
accomplished for purposes of the monthly progress payments to the
Contractor. Of the assembly units listed in the \"Value and Disposition
of Units to be Removed\" table to be removed from existing lines certain
units are to be reused in the construction of the project. The quantity
of such units to be reused is listed in the \"Value and Disposition of
Units to be Removed\" table, column 5. These units where installed in
the project will be inventoried as new assembly units and compensated
for at the unit bid prices. The quantity of assembly units listed in
column 6 of the \"Value and Disposition of Units to be Removed\" table
is the maximum quantity of removed assembly units that are to be
returned to the Owner for credit which will be allowed at the unit
material prices in column 2. Column 7 indicates the extended value of
the units to be returned to the Owner. The Contractor will be allowed
credit for assembly units listed in column 6 which, in the opinion of
the Engineer, have not been damaged by the Contractor in removal and
handling. Such credits will be allowed the Contractor as the assembly
units are returned to a location designated by the Owner and shall be
added to the total value of installed assembly units for determination
of work accomplished for the purposes of the monthly progress payments
to the Contractor. The removal units are specified by the prefix \"XZ\"
followed by the assembly unit designation of the existing assembly unit
to be removed.

**[Part II - SPECIFICATIONS FOR MATERIALS]{.underline}**

**1. SCOPE**

This part of the specifications is concerned with the various materials
required for the construction of customer access service installations
of the rural telecommunications system as shown on the Plans,
Specifications, and Construction Sheets.

**2. GENERAL**

All materials used in the construction of the rural telecommunications
system except those listed in Paragraph 3 below shall be listed in RUS
Informational Publication (IP)

344-2, \"List of Materials Acceptable for Use on Telecommunications
Systems of RUS Borrowers,\" unless specific written approval has been
granted by the Administrator.

**3. MISCELLANEOUS**

Items for which categories do not appear in RUS IP 344-2, \"List of
Materials Acceptable for Use on Telecommunications Systems of RUS
Borrowers,\" shall be of a quality suitable for the application for
which they are intended.

### Part III - SPECIFICATIONS FOR CONSTRUCTION AND INSTALLATION

**1. GENERAL**

**1.1** All construction and installation work shall be done in a
thorough and workmanlike manner in accordance with the Plans,
Specifications and Construction Sheets and shall be subject to
acceptance by the Owner and the Administrator.

**1.2** All material to be used in construction of the Project shall be
stored so as to be protected from deteriorating effects of the elements.

**1.3** All service wires and cables, and accessory materials used in
the construction of the Project shall be handled with care. Each reel of
service wire or cable shall be inspected for damage. Prior to
installation, all damage shall be repaired to the satisfaction of the
Engineer. If reel wrap is present, the reel wrap shall remain intact on
the reel until the wire or cable is ready to be placed.

**1.4** Deviations from the Plans, Specifications and Construction
Sheets shall not be permitted except upon written permission of the
Engineer.

**1.5** The latest revision of the National Electrical Safety Code
(NESC) and the National Electrical Code (NEC) shall be followed in every
case except where local regulations are more stringent, in which case
local regulations shall govern.

**1.6** The Contractor shall maintain conductor polarity (tip and ring)
identification at the main distributing frame, cable terminals, wire
terminals, terminal blocks, and for Service Entrances at the network
interface device (NID), all in accordance with the Specifications and
Construction Sheets.

**2. AERIAL SERVICE ENTRANCES**

**2.1** Aerial service wires shall be installed in accordance with RUS
Service Installation Standard Bulletin 1753F-801(PC-5A), and the
Construction Sheets.

**2.2** All clearances shall comply with the applicable requirements of
the NESC, and NEC, or local laws, or ordinances, whichever are most
stringent.

**3. BURIED SERVICE ENTRANCES**

**3.1** Buried service entrances shall be installed at the depth listed
below unless otherwise specified by the Engineer.

minimum depth in soil - 12 inches (in.)

> \[305 millimeters (mm)\]

minimum depth in ditches - 36 in. (914 mm)

(see guide drawing 975)

minimum depth in rock - 3 in. ( 76 mm)

**3.2** Buried services shall contact the building as near as
practicable to the NID or proposed NID location.

**3.3** Buried services shall be located to avoid damage from lawn
mowers, animals, etc., and, where deemed necessary by the Engineer,
shall be guarded.

**3.4** The method of installation is shown on the Construction Sheets.

**3.5** Buried services shall be installed against a foundation wall or
pillar to provide adequate support and mechanical protection.

**3.6** The buried service conductors shall be terminated in the NID,
when specified by the Engineer, as shown on the Construction Sheets.

**4. NID**

**4.1** NID\'s shall be installed and grounded in accordance with RUS
Service Installation Standard Bulletin 1753F-801(PC-5A), and the
Construction Sheets. They shall also be installed in such a manner as to
coordinate with acceptable, available grounding electrodes, such as to
meet the existing applicable requirements of the NEC or local laws or
ordinances whichever are more stringent.

**4.2** The NID shall be located as directed by the Engineer. The choice
of location shall be chosen to facilitate common grounding with existing
(code) acceptable grounding electrodes by obtaining the best compromise
between the length of horizontal service wire or cable run and length of
protector grounding conductor wire run.

**4.3** Where a grounding conductor or a bonding conductor is to be
buried, the trench shall be dug as close to the side of the building as
practicable. Trenches shall be properly backfilled.

## **LIST OF CONSTRUCTION DRAWINGS AND PLANS**

[Assembly Unit Drawings]{.underline}

BM50 Buried Service Wire or Cable Installation to

> Pole-Mounted Wire Terminal

BM83 Buried Service Guard

NID1 Electric System Ground with Bond to Metallic

> Water Pipe System

NID2 Electric System Ground Rod

NID3 Electric System Grounding Conductor

NID4 Telco Ground Rod with Sub-surface Bond to

> Electric Ground

NID5 Telco Ground Rod with Above-surface Bond to

> Electric Ground

NID6 Telco Ground Rod with Bond to Water Pipe - No

> Electric Service at Site

NID7 Mobile Home Installation -- within 35 ft

of Electric Service Equipment

NID8 Mobile Home Installation -- over 35 ft

from Electric Service Equipment

[Construction Guide Drawings]{.underline}

1.  Buried Service Wire - Termination of Shield

and Conductors on Station Protector Binding

Posts of NID

963-2 Bonding Buried Service Wire at Station

> Protector of NID - (Service Wire Shield
>
> Bonding Connector)

NOTE: On the Assembly Unit and Construction Guide Drawings an asterisk
(\*) in the ITEM column indicates items that are no longer listed in RUS
IP 344-2, \"List of Materials Acceptable for Use on Telecommunications
Systems of RUS Borrowers**.\"**