Telecom/1996-04-telecom-walnutcreek.iso/technical/wire-it-yourself

Text File | 1989-08-01 | 38KB | 856 lines

TELECOM Digest Supplement   Monday, 29 November 1982    Volume 2 : Issue 133A

Today's Topics:
   New England Telephone's Customer-Provided Inside Wire Program
----------------------------------------------------------------------

Date: 22 Nov 1982 1952-EST
From: Dave Mitton <SCHRIESHEIM.MITTON at DEC-MARLBORO>
Subject: New England Telephone's Customer-Provided Inside Wire Program

    An Introduction to Providing Your Own Telephone Wiring

    How to Do It Yourself, Including Technical, Material
    and Workmanship Standards.

    New England Telephone


[Transcriber's Notes:
    There was no copyright notice, reference number or order number
    on this pamplet.  I have corrected a few typos that I found.
    The page numbering in the original Table of Contents was preserved,
    but I have repaginated this transcription to fit on standard 66-line
    line printer paper.  DJM 22-Nov-82 ]

WARNING:
Limitations of Liability

 o  The customer is responsible for the installation of CPIW and standard jacks
    in the accordance with the tecical standards furnished to the Public
    Utilities Commission.

 o  In the event that the customer installs, maintains or attempts to maintain
    inside wire, the customer assumes the risk of loss of service, damage to
    property, or injury of the customer or the customer's agent.  The customer
    will save the Company harmless from any and all liability, claims, or
    damage suits arising out of the customer's wire installation or
    maintenance activity.

 o  Where CPIW is maintained by the customer, the customer is responsible for
    correcting any service difficulty that is causing harm to the
    telecommunications network upon notice from the Company that such wire is
    causing the difficulty.

 o  In those instances where the Company makes a repair visit to the
    customer's premises and the service difficulty or trouble results from
    the CPIW that is not installed or maintained in accordance with the
    technical standards for such wire, the customer will be responsible for
    the payment of the Maintencance of the Service Charge in the accordance
    with Company tariffs filled with the Public Utilities Commission.


TABLE OF CONTENTS
-----------------------------------------------------------------------------
Introduction.................................. 1
What Is Inside Wire?.......................... 2
What Is A Network Interface................... 2
Means Of Connection To The Network............ 2
General Considerations........................ 3
  Technical and Safety Considerations......... 3
  Limitations................................. 4
Connecting Your Telephone..................... 4
Workmanship And Material Specifications For
  Customer-Provided Inside Wire (CPIW)........ 6
How To Install Your Own Telephone Wire........ 8
  Wiring Components........................... 8
  Planning Your Wiring Job.................... 9
  When Planning Remember......................10
  Caution: Safety First!......................12
  Installation Steps..........................13
Testing.......................................14
Troubleshooting...............................14
Quick Installation Checklist..................15
  Table A.....................................16
  Table B.....................................16
  Table C.....................................16
  Table D.....................................17
Appendix A - Definition of Terms..............18
Notes.........................................21

CUSTOMER PROVIDED INSIDE WIRE (CPIW)
-----------------------------------------------------------------------------
Introduction

The New England Telephone Company now offers the option for customers
(or their agents) to install their own residential or multi-party* and
individual line cusiness wiring for use with Federal Communications Commision
(FCC) registered or grandfathered nonbutton and/or single button telephone
sets and associated equipment.

*NOTE: Party-line service must have Telephone Company provided terminal sets.
Customer provided equipment may not be used with PARTY LINE SERVICE.

Customers with (semi-public) coin telephones or multi-line equipment on their
exchange service are not eligible for this option.

This pamplet contains minimum technical material and workmanship standards for
the installation of inside wire by customers.  It contains guidelines that a
customer must follow.  It will explain how to plan your wiring project, what
components are available and necessary to do the job.  Further, it explains
how to safely install wiring, what safety percautions to take, and how to test
your wiring when you complete it.  Also, it explains how your telephone is
connected to the telecommunications network.

Customers must comply with all building and electrical codes in the
jurisdiction served by The New England Telephone Company and Article 800,
entitled, Communications Circuits of the Electrical Code, relevant sections of
which are incorporated by reference in this booklet.  The standards in this
document are subject to change as technology, installation and maintenance
methods change.  The New England Telephone Company reserves the right to
revise these standards when the need arises.

Customer safety and the safety of our employees is a great concern of The New
England Telephone Company.

Appendix A provides a definition of the terms used herein.


WHAT IS INSIDE WIRE?
-----------------------------------------------------------------------------

Inside Wire is all telephone wire that is inside a telephone company
customer's premises and is located on the customer's side of the Network
Interface (NI).

Customer Premises Inside Wire can be installed by the customer of the
customer's agent, other than The New England Telephone Company.


WHAT IS A NETWORK INTERFACE?
-----------------------------------------------------------------------------

The Network Interface (NI) is the physical and electrical boundary between
Customer Premises Inside Wire and the telecommunications network.  The NI can
be any telephone Company-provided modular jack.

Your telephone line runs from your home or business to the local telephone
company switching office.  There it is connected to equipment that hooks you
up with the nationwide telephone network.

[A figure shows the modular jack type with a swinging cover on the front.
 A label on the jack reads:
    NETWORK INTERFACE
    o CAUTION
    Disconnect plug from this jack during
    installation and repair of wiring
    o TESTING
    Plug working phone directly into this jack.
    If phone operates, Fault is in wiring.
    If phone does not operate, call Repair service.    ]


MEANS OF CONNECTION TO THE NETWORK
-----------------------------------------------------------------------------

The line will enter your home and terminate in an NI which is installed by
the Telephone Company when you establish telephone service.

Generally, the telephone wiring entry to a structure will be located at the
same place as electrical wiring.  The NI will be placed near this entry.

If an NI is not in place, any existing telephone company-provided modular
jack may be used to connect newly installed customer-provided inside wire to
existing inside wire.

The NI must be located inside the customer's premises at an accessible point.
There are several reasons for this:

 o  Connection through a telephone company-provided modular jack is required
    by the Federal Communication Commission's (F.C.C.) Registration program.

 o  Utilization of a jack makes it easier to connect or disconnect customer
    equipment or wire to the telecommunications network.

 o  Having the jack inside the customer's premises helps assure the customer's
    privacy of communication and helps to prevent unauthorized use.

 o  Utilization of a jack forms a boundary for the ending of the network
    service and the beginning of the inside wiring and equipment.

The point of location for the NI will be determined by The New England
Telephone Company.

It's important to note that if you plan to add to existing wiring or to wire
your premises from scratch, you must have either an NI or other telephone
company-provided modular jack that has been installed by The New England
Telephone Company.

When you complete the wiring, you'll plug your wiring directly to the NI or
other telephone company-provided modular jack.  The end of your wire must have
a modular plug on it to enable you to connect to the NI or telephone company-
provided modular jack.


GENERAL CONSIDERATIONS
-----------------------------------------------------------------------------
Technical and Safety Considerations

Wiring may only be use to conduct the operating signals, voltage and currents
normally found on telephone network service lines.  Customer-Provided Inside
Wire must be capable of withstanding without damage, exposure to induced
lightning surges and 60 Hz power line disturbances.  This standard requires
that such wiring and its associated hardware be designed, installed and
maintained so as to operate safely when conduction these signals, surges and
disturbances.

Limitations

Any Customer-Provided Inside Wire that does not conform to the standards
published in this booklet will neither be connected to the network nor
maintained by The New England Telephone Company until it is in compliance
with tariffs on file.


CONNECTING YOUR TELEPHONE
-----------------------------------------------------------------------------

Connecting points between your inside wire and your telephones may be of
several types, depending on when your phones were installed:

 o  Modular - Most recently installed telephones are connected to the
    inside wire via a modular system, which, for desk type phones, consists
    of a miniature plug at the end of the telephone cord and a matching jack
    on the wall or baseboard. (see Fig. 1).  Wall mounted phones have a pair
    of slots and a sliding modular plug on the back.  The phone is attached
    to a "connecting block" on the wall, which has two rivets that fit into
    the slots and a modular jack which accepts the plug located on the back
    of the phone. (see Fig. 2).

[Fig. 1 shows a wall surface plate with a modular jack in it.]
[Fig. 2 shows the back of a standard modular wall phone and the appropriate
 modular wall phone plate with the slots and guides labeled.]

 o  Permanently Wired - The telephone is connected directly to the inside
    wire and cannot be unplugged.  The connection point is usually a small,
    square plastic box near or on the baseboard by the floor.

[A figure shows a 42A block with a cord running out of it.]

 o  Four-Prong - On some desk-type telephones, there is a round or
    rectangular four-prong plug at the end of the telephone cord.
    The four-prong plug plugs into a jack with four holes.  Telephones
    equipped with such plugs may be plugged in and unplugged easily,
    enabling you to move them from room to room as needed.

[A figure shows a four-prong connector and plug.]

To convert permanently wired phones or those with four-prong plugs to a
modular system, you will need a converter kit from the Telephone Company
or a retail store that sells telecommunications products.  (Note: Any
converter which is to be used as a NI must be Telephone Company provided.)


WORKMANSHIP AND MATERIAL SPECIFICATIONS FOR CUSTOMER-PROVIDED INSIDE
WIRE (CPIW)
-----------------------------------------------------------------------------

The specifications contained in this document apply to Customer-Provided
Inside Wire, which is used in conjunction with Residence and Individual
Line Business telephone service that are used with non-key terminal
equipment.

 1. Building and Electrical Codes

    a.    All building and electrical codes applicable in your state to
    telephone wiring shall be complied with.

    b.    The requirements set forth in Article 800 of the National
    Electrical Code, entitled Communication Circuits and other
    sections of the code incorporated therein by reference shall be
    complied with.

 2. Wire

    a.  Wire shall be of a gauge no thinner that 24AWG; it shall be
        flexible annealed copper or its equivalent; it shall contain a
        minimum of 2 conductors each insulated by a semi-rigid polyvinyl
    cloride or its equivalent; and should be constructed in a
    twisted pair configuration.  See Table A for additional
    information.

    b.    Insulated conductors shall have a jacket or sheath with a
    1500 volt rms minimum breakdown rating.

    c.    Wiring shall be installed so that there is adequate
    insulation of telephone wiring from commercial power wiring and
    grounded services.  See Table D from additional information.

    d.    Wiring must be sheathed in an insulating jacket in addition
    to the insulation enclosing individual conductors, or it must be
    enclosed in conduit.  In either case, it shall be assured that
    this physical and electrical protection is not damaged or abraded
    during placement of the wiring.

    e.    Removal of the wiring jacket or individual conductor insulation
    for connections or splices shall be accomplished by removing the
    minimum amount of insulation necessary to make connection or splice.
    Insulation equivalent to that provided on the wire and its jacket
    shall be suitably restored, either by placement of the splices or
    connections in an appropriate enclosure, or by using adequately
    insulated connectors or splicing means.

    f.    Any point where the sheathing, insulation or enclosure for wire
    has been removed shall be accessible for inspection.  If such points
    are concealed they shall be accessible (e.g., by removing a cover)
    without disturbing permanent building finish.

 3. Physical Protection

    a.  In addition to the general requirements that wiring insulation be
    adequate and not damaged during placement of the wiring, wiring
    shall be protected from adverse effects of weather and the
    environment in which it is used.

    b.    Where wiring is attached to building finish surfaces (surface
    wiring) it shall be suitably supported by means which do not
    affect the integrity of the wiring insulation.  See Table C for
    additional information.

 4. Electrical Protection

    Lightning or other hazardous voltage protectors placed by the
    Telephone Company shall not be disturbed, removed, or otherwise
    modified by the customer.

 5. Limitations on Electrical Signals

    a.  Only signals which emanate from the local telephone company
    central office, or which are generated by telecommunications
    equipment at the customer's premises which are "non-hazardous
    voltage sources" [see Federal Communications Commission (F.C.C.)
    Rules Part 68 Section 68.306(b)(4)] may be routed in premises
    telephone wiring.

    b.    Electrical current on individual wiring conductors shall be
    limited to values which do not cause an excessive temperature
    rise, with due regard to insulation materials and ambient
    temperatures.


HOW TO INSTALL YOUR OWN TELEPHONE WIRE
-----------------------------------------------------------------------------

Wiring Components

Before you buy any wire, plan the whole wiring job to decide how many of the
various components you'll need.  There are several types of components
associated with telephone wiring:

 o  Modular Outlets - These are the jacks or connecting blocks, into which
    modular phones are plugged.  There are two basic types:  jacks for desk
    telephone sets, and jacks for wall telephone sets.  In shopping for
    wiring components, you may find several variations for modular jacks.
    Some attach to the surface of the baseboard or wall, while others are
    flush-mounted, requiring a hole in the wall.  Some also provide a
    spring-loaded door to cover the jack opening when nothing is plugged
    into it.  This protects the inside of the jack from dust or dirt, which
    can damage the electronic contacts.  These outlets must meet the Federal
    Communications Commission's (F.C.C.) Registration Program requirements.

 o  Bridges - The purpose of a bridge is to connect two or more sets of
    telephone wires.  Some bridges include a cord with a modular plug on the
    end, which can serve as an entrance plug in connecting your wire to the
    telephone company-provided NI or modular jack.  Other bridges are
    designed to be placed at a junction where several telephone wires meet.
    Proper use of bridges will minimize the amount of wire required for the
    job.

[A figure shows an outside line that connects to a Protector Block, which
connects to a Network Interface, which connects to an Entrance Bridge, which
connects to a jack and a Line Bridge, which connects to several jacks.]

 o  Telephone Wire - Wire used should be should be solid copper, 22 to 44
    gauge, and have four insulated conductor wires, colored red, green,
    black and yellow.  The wire should have an outer plastic coating
    protecting all four conductors, all must meet Federal Communications
    (F.C.C.) requirements (the package should indicate that the material
    contained therein meets such standards).  Wire staples generally are
    used to secure wire to a wall.


PLANNING YOUR WIRING JOB
-----------------------------------------------------------------------------

Determine where you want to place the modular outlets.

Determine which type of outlet is best for each location.  If the jack is
likely to be exposed to excessive dust or dirt, use jacks with protective
covers.

Determine the best path to run the wiring from the NI or other existing
telephone company-provided modular jack to each of the new outlets. Place
bridges where two or more paths come together.

Inventory the tools you'll need to do the wiring job, such as:
    - Screwdriver with insulated handle
    - A pair of diagonal cutters with insulated grips, to cut wire
    - A tool to strip the wire coating off without damaging any of the
      four conductors
    - Hammer or staple gun for staples used to attach wire to wall or
      baseboard
    - Drill, with appropriate sized bits, to drill holes for screws, anchors
      and toggle bolts
    - Key hole saw, if a hole in the wall is necessary, and a drill with a
      large enough bit to make a hole for the saw blade

For best results, you should follow these guidelines and observe these
restrictions.  In addition, your wire must comply with technical, material,
and workmanship standards approved by state regulatory bodies and any local
building codes.  If the wire is not in compliance, the result could be poor
telephone service, and your safety and the safety of others may jepardized.

The Telephone Company will charge a Service Charge, if a service technician
is called to your premises and the trouble is located in your wire and/or if
they are required to repair it.


WHEN PLANNING, REMEMBER ...
-----------------------------------------------------------------------------

 o  DO NOT place connections to wiring in outlet or junction boxes
    containing other electrical wiring.

 o  When wiring, avoid:
    - damp locations
    - locations not easily accessible
    - temporary structures
    - wire runs that support lighting, decorative objects, etc.
    - hot locations, such as steam pipes, furnaces, etc.
    - locations that subject wire and cable to abrasion

 o  Place telephone wire at least six feet from bare power wiring or
    lightning rods and associated wires, and at least six inches from other
    kinds of wire (e.g., antenna wires, wires from transformers to neon
    signs, etc.) steam or hot water pipes and heating ducts.  See Table D
    for additional information.

 o  Do not connect any external power sources to your inside wire or
    outlets.

 o  Do not run wire between seperate buildings.

 o  Do not expose wire to mechanical stress, such as being pinched when a
    door or window closes on it.

 o  Do not place wire where it would allow a person to use the phone while
    in a bathtub, shower, swimming pool or other dangerous locations.

 o  Do not try or pull or push wire behind walls when electric wiring is
    already present in the wall area.

 o  Use only bridged connections if it is necessary to establish a splice of
    two or more wires.

 o  Place connecting blocks and jacks high enough to remain moisture-free
    during normal floor cleaning.

 o  Do not attach jacks so that the opening faces upward - this increases
    the potential for damage from dirt and dust.

 o  Wires should run horizontally and vertically in straight lines, and
    should be kept as short as possible between bridges and other
    connections.

 o  Run wiring along door and window casings, baseboards, trim, and the
    underside of moldings, so it will not be conspicuous or unsightly.

 o  Wood surfaces are better for fastening wire and attaching connecting
    blocks, jacks, and bridges.  When attaching hardware to walls, place
    fasteners in studs (wooden beams behind the walls) whenever possible.

 o  If drilling through walls, floors, ceilings, be careful to avoid
    contacts with concealed hazards, such as electrical wiring, gas pipes,
    steam or hot water pipes, etc.

 o  If installing wire next grating, metal grillwork, etc., use a wire guard
    or two layers of friction tape to resist abrasion.

 o  Always fasten wire to cement or cinder blocks with screw anchors, drive
    anchors, or masonary fasteners.

 o  Avoid running wire outside whenever possible.  If exterior wiring is
    necessary, drill holes through wooden window or door frames and slope
    entrance holes upward from the outside.  Try to use rear and side walls
    so the wire will not be as noticeble; place horizontal runs out of reach
    of children and family members; and avoid placing wire in front of
    signs, doors, windows, fire escapes, "drop wires" and across flat roofs.

 o  When fastening wire to metal siding, the type of fastener used depends
    on the type of siding and the method used to install it.  Check with the
    vendor who sold you the wiring materials.  Look out for voltages coming
    from the telephone line before starting and work involving metal siding.
    Extra caution should be used when working on mobile homes.  Mobile homes
    should be properly grounded.  Other voltages (e.g. electrical) are
    usually higher and can therefore present an extreme danger working
    around metal.  Therefore, proper grounding is very important.


CAUTION: SAFETY FIRST!
-----------------------------------------------------------------------------

Telephone connections may have varying amounts of electrical current in the
bare wires and terminal screws.  Therefore, before you begin installation,
make sure the entrance point of any existing wire is unplugged from the NI or
telephone company-provided modular jack while you are working.  This will
disconnect any wiring from the telephone network.  If you're just connecting a
new modular outlet to existing wiring which you cannot disconnect, take the
handset of one of your telephones off the hook.  This will prevent the phone
from ringing and reduce the possibility of electrical shock.  Disregard
messages or tones coming from the handset signalling you to hang up.  In
addition:

 o  Use a screwdriver with an insulated handle.

 o  Do not touch screw terminals or bare conductors with your hands.

 o  Do not work on wiring while a thunderstorm is in the vicinity.


INSTALLATION STEPS
-----------------------------------------------------------------------------

Once you've planned your wiring job, acquired the necessary components, and
observed the safety precautions you're ready to start the installation.  For
each component you use, be sure read thoroughly any instructions accompanying
the component before you begin.  Follow these simple steps to complete the
wiring job:

 1. Install a bridge or some other component to act as an entrance plug for
    your wire.  This plug will connect to the NI or telephone company-provided
    modular jack.  The bridge should have a modular-type cord with a plug at
    the end to insert into the NI or modular jack.  Another acceptable type of
    entrance plug is a length of telephone wire with a modular plug on the
    end.  Do not ever insert the entrance plug into the NI or modular jack
    until your wiring is completed.

 2. Attach each modular jack to the wall or baseboard.  Use wood screws on
    wooden surfaces.  Drill holes slightly smaller than the diameter of the
    screws being used to make installation easier.  To fasten components to
    plasterboard walls, use screw anchors or toggle bolts.

 3. Run wire to each modular jack stapling it to the wall or baseboard about
    every 8 inches.  Be sure to not pierce or pinch the wire with staples.
    Allow enough wire to make the electrical connections to the modular jack
    attached to the wall or baseboard.  See Table C for additional
    information.

 4. Strip the plastic coating on the phone wire as needed and connect the
    colored conductors (e.g. red, green, black, and yellow) to the terminals
    for each modular jack.  Trim excess wire and attach the modular jack cover
    (if any) to the base.  See Table B for additional information.

 5. When you've completed your wiring job, place the plug on the end of your
    bridge into the NI or telephone company-provided jack.


TESTING
-----------------------------------------------------------------------------

After installing the wiring, test it.  Lift the handset of a phone plugged
into one of the new outlets, listen for dial tone, then dial any single number
other that "0".  Listen.  If you hear a lot of excessive noise, or if dial
tone cannot be interrupted, you have a problem.  Attempt to locate it by using
the following "Troubleshooting" guidelines.  If you cannot locate or repair
the trouble yourself, disconnect the defective wiring until you can get the
problem repaired.


TROUBLESHOOTING
-----------------------------------------------------------------------------

If testing indicates problems in the wiring you've installed, or if problems
develop with the phone service later, try to determine if the problems are
being caused by your own wire and equipment, or by the telephone line.  Here
are some of the things you can do to try to identify the nature of the
problem:

 o  Unplug the wire you installed from the NI or telephone company-provided
    modular jack.  Plug any phone (other than the one used when you detected
    the problem) directly either of these jacks.

 o  If the problem persists, the telephone company lines or equipment may be
    faulty and you should:
    - Dial the telephone company's repair service bureau listed in your
      directory.
    - Describe the problem you are experiencing and be sure to state that you
      have installed your own wiring.

 o  If the problem no longer exists when you plug another phone into the NI or
    telephone company-provided modular jack, it probably is being caused by
    your wire or equipment.  You may be able to localize the source of the
    problem by plugging the working phone into different outlets and testing
    each separately as before.  Among the possible sources of trouble are
    broken wires, worn insulation, incorrect (e.g. red and green conductors
    reversed) or loose connections and staples put through the wire.

Note: If you have Touch-Tone(r) Service and after lifting the handset of a
phone plugged into the new outlet you installed you hear dial tone, but the
Touch-Tone(r) dial does not operate, unplug the wire from the NI or other
telephone company-provided modular jack, reverse the red and green conductors
at the outlet, then plug it back into the NI and check the phone again.  If
you still can't locate the problem, call the telephone company's repair
service bureau.


QUICK INSTALLATION CHECKLIST:
-----------------------------------------------------------------------------

 o  Be sure the entrance plug is unplugged from the NI or telephone company-
    provided modular jack.

 o  Attach each component securely to the wall or baseboard.

 o  Run wire to each component allowing enough extra wire to make electrical
    connections.

 o  Make electrical connections and put covers on components.

 o  Plug the entrance plug into the NI or telephone company-provided modular
    jack.

 o  Plug in telephones and test (see "Testing" instructions).

 o  See "Troubleshooting" instructions if problems occur.


TABLE A - Selection of Wire
---------------------------------------------------------
| Type of Wire    |Pair No.|    Pair Color Matches    |
---------------------------------------------------------
| 2-pair Wire    |   1     | Green    | Red        |
|        |   2     | Black    | Yellow    |
---------------------------------------------------------
| 3-pair Wire    |   1     | White/Blue    | Blue/White    |
|        |   2     | White/Orange    | Orange/White    |
|        |   3     | White/Green    | Green/White    |
---------------------------------------------------------


TABLE B - Inside Wire Connecting Terminations
---------------------------------------------------------
|    Wire Color        |    Wire Function        |
---------------------------------------------------------
| 2-pair | 3-pair    | Service w/o    | Service with    |
| wire   | wire        | Dial Light    | Dial Light    |
---------------------------------------------------------
| Green     | White/Blue    | Tip        | Tip        |
| Red     | Blue/White    | Ring        | Ring        |
| Black     | White/Orange    | Not Used    | Transformer    |
| Yellow | Orange/White    | Ground    | Transformer    |
---------------------------------------------------------


TABLE C - Typical Fasteners and Spacing Intervals
---------------------------------------------------------
| Fasteners     | Horizontal |  Vertical  | From Corner    |
---------------------------------------------------------
| Wire clamp    |   16 in.   |   16 in.   |    2 in.    |
| Staples(wire)    |  7.5 in.   |  7.5 in.   |    2 in.    |
| Bridle Rings*    |    4 ft.   |            |  2-8.5 in.* |
| Drive Rings**    |    4 ft.   |    8 ft.   |  2-8.5 in.* |
---------------------------------------------------------

* When changing direction of wire runs the fasteners should be spaced to hold
the wire at approximately a 45-degree angle.

** To avoid possible injury do not use drive rings below a 6 foot clearance
level, use bridle rings.


TABLE D - Separation And Physical Protection For Premises Station Wiring

This table applies only to telephone wiring from the Network Interface or
other telephone company-provided modular jacks to telephone equipment.
Minimum separations between telephone wiring whether located inside or
attached to the outside of buildings and other types of wiring involved
are as follows.  Separations apply to crossing and to parallel runs
(minimum separations).
-------------------------------------------------------------------------
|    Types of Wire Involved        |  Minimum     | Wire Crossing    |
|                    | Separations    | Alternatives    |
-------------------------------------------------------------------------
| Electric  | Bare light or power wire    |   5 ft.    |     No    |
| Supply    |  of any voltage        |        | Alternative    |
|        | Open wiring not over    |   2 in.    | See Note 1.    |
|        |  300 volts        |        |        |
|        | Wires in conduit or in    |   None    |     N/A    |
|        |  armored or nonmetallic    |        |        |
|        |  sheath cable, or power    |        |        |
|        |  ground wires        |        |        |
|        |                |        |        |
| Radio &   | Antenna lead-in and     |   4 in.    | See Note 1.    |
|   TV        |  ground wires        |        |        |
|        |                |        |        |
| Signal or | Open wiring or wires in    |   None    |     N/A    |
|  Control  |  conduit or cable        |        |        |
|  Wires    |                |        |        |
|        |                |        |        |
|  Comm.    | Community Television    |   None    |     N/A    |
|  Wires    |  systems coaxial cables    |        |        |
|        |  with grounded shielding    |        |        |
|        |                |        |        |
| Telephone | Using fused protectors    |   2 in.    | See Note 1.    |
| Drop Wire | Using fuseless protector    |   None    |     N/A    |
|        |  or where no protector    |        |        |
|        |  wiring from transformer    |        |        |
|        |                |        |        |
|  Sign        | Neon Signs and associated    |   6 in.    |     No    |
|        |  wiring from transformer    |        | Alternative    |
|        |                |        |        |
| Lightning | Lightning rods and wires    |   6 in.    | See Wiring    |
| Systems   |                |        | Separations    |
|        |                |        |        |
-------------------------------------------------------------------------
NOTE 1: If minimum separations cannot be obtained, additional protection
of a plastic tube, wire guard, or two layers of vinyl tape extending 2 inches
beyond each side of object being crossed must be provided.


APPENDIX A
DEFINITION OF TERMS
-----------------------------------------------------------------------------

Armored or Non-metallic Sheathed Cable
  An assembly of two or more insulated conductors having an outer sheath of
  moisture resistant, flame retardant, non-metallic materials.

Bare Wire
  An electrical conductor having no covering or insulation whatsoever.

Bridle Ring
  A device used to loosely hold telephone wiring where appearance is not a
  factor.  The bridle ring screws into the supporting surface.  It is usually
  used where the wire is run below six feet and contains no sharp or hazardous
  edges.  The telephone wire is inserted after the ring is in place.

Cleats
  Porcelain fasteners which are used to fastend electric power wires that
  insulated but do not have an outer protective jacket.

Coaxial Cable
  A two conductor cable for transmitting electrical signals that consists of a
  tube of conducting material surrounding a second centrally located conductor
  which is held in place by insulators.

Conduit
  A plastic or metal pipe or tube used to carry telephone or electrical
  wiring.

Connecting Block
  A device used for terminating premises telephone wiring and a means of
  connecting telephone sets to such wiring.

Customer-Provided Inside Wire
  Is that wiring which is inside the premises from a Network Interface (NI)
  to the telephone hardware and is provided by the customer.

Dial Light
  A small light bulb powered by a low voltage and used to illuminate a
  telephone set dial in dark locations.

Drive Rings
  A device used to loosely hold telephone wiring in place where appearance is
  not a factor.  The nail in a drive ring is driven into the supporting
  surface and the ring is open to permit placing or wires.  A drive ring must
  be at leaset six (6) feet from the floor so that its nail will not present
  a hazard.

Drop Wire
  Wire used to transmit telephone service into a customer's premises.  It may
  be aerial or buried.

Knobs
  Porcelain fasteners used to affix electrical power wires which are insulated
  but do not have an outer protective jacket to a surface.

Modular
  The term "modular" as used herein applies to the connection of a telephone
  set mounting cord to a telecommunications network via plugs located on the
  end of such cords and jacks used to terminate premises inside wire.

Network Interface
  The physical and electrical boundary between customer premises inside wire
  and telecommunications network.  The Network Interface can be any telephone
  company provided modular jack.

Non-Modular
  The term "non-modular" as use herein applies to the connection of a
  telephone set mounting cord to the telecommunications network via a four(4)
  pin plug and matching jack, or via hardwiring.

Open Wiring
  A wiring method using cleats, knob, and tubes, or flexible tubing for the
  protection and support of insulated conductors run in or on buildings and
  not concealed by the building structure.

Party Line
  A basic telephone exchange service line whose use is shared by two or more
  residential subscribers.

Protector
  A device used as protection from hazardous voltages.  It may be mounted
  either inside or outside the premises.  If mounted outside it will be
  covered with a plastic or metal housing.

Raceways
  A metal or plastic channel used for loosely holding electrical and telephone
  wires in buildings.  A raceway is usually located in the floor and is
  usually encased on three or four sides by concrete.

Registered Terminal Equipment
  Terminal equipment which is registered for connection to the telecom-
  munications network in accordance with Subpart C of Part 68 of the F.C.C.'s
  rules.  If a terminal device has been properly registered it will have an
  identification number permanently affixed to it.

Ring
  As used herein "ring" refers to that side of a two wire telephone circuit
  which is connected to the negative side of a battery located at the
  Telephone Company Central Office.  It is like the "hot" side of a
  residential lighting circuit.

Telecommunications Network
  The public switched telephone network.

Tip
  As used herein "tip" refers to that side of a two wire telephone circuit
  which is connected to the positive side of a battery at the Telephone
  Company Central Office.  It is like the ground side of a residential
  lighting circuit and its color code is green.

Transformer
  As used herein, a transformer is an electrial device which reduces the
  voltage in electrical house wiring to a low voltage in order to operate
  a dial light.  It plugs into a electrical outlet and has externally located
  low voltage connections which are extended by inside wiring to the telephone
  set dial light.

Wire Clamp
  A device used to secure telephone wires to a surface.  One end is U shaped
  for placement over the wire.  The other end contains a tab which is affixed
  to the mounting surface with a nail or a screw.

Wire Guard
  A length of plastic (round or U shaped) use to protect telephone wiring from
  abrasion or foreign voltages.


NOTES

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End of TELECOM Digest Supplement
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