Original Version

Rule 20.3

20.3    Cable means a stranded conductor (single conductor cable) or a combination of conductors insulated from one another (multiple-conductor cable).

A.    Fiber Optic Cable communication means a fiber optic cable meeting the requirements for a communication circuit and located communication level. Such cable shall have the same clearance from supply facilities as required for a communication messenger per Rule 87.4-C3

B.    Fiber Optic Cable- Supply means a fiber optic cable located at the supply level.

(1)    Cable passing vertically through the communication level on a structure shall be treated per Rules 54.6-D and 84.6-D.

(2)    Cable supported on a messenger that is effectively rounded (Rule 57.8) throughout its length shall have the same clearance from communication facilities as required for neutral conductor meeting Rule 33.1

(3)    Cable supported on or with other messengers or conductors shall have the same

C.    Dielectric Fiber Optic Cable means a fiber optic cable which contains no components capable of conducting electricity.

D.    Non- Dielectric Fiber Optic Cable means a fiber optic cable which contains components capable of conducting electricity.

Strikeout and Underline Version

Rule 20.3

20.3    Cable means a stranded conductor (single conductor cable) or a combination of conductors insulated from one another (multiple-conductor cable).

A.    Fiber Optic Cable (Communication) means a fiber optic cable meeting the requirements for a communication circuit and located at the communication level.  Such cable shall have the same clearance from supply facilities as required for a communication messenger per Rule 87.4-C3.

B.    Fiber Optic Cable - Supply means a fiber optic cable located at the supply level.

(1)    Cable passing vertically through the communication level on a structure, shall be treated per Rules 54.6-D and 84.6-D.

(2)    Cable supported on a messenger that is effectively grounded (Rule 57.8) throughout its length shall have the same clearance from communication facilities as required for a neutral conductor meeting Rule 33.1.

(3)    Cable supported on or with other messengers or conductors shall have the same clearances from facilities required for such messengers or conductors meeting Rule 89.2.

C.    Dielectric Fiber Optic Cable Facility means a fiber optic cable, support messenger and lashing wire which contains no internal or external components capable of conducting electricity.  A Dielectric Fiber Optic Cable Facility does not include pole mounted hardware or splice closures; for example, bolts, fasteners or clamps

D.    Non-dielectric Fiber Optic Cable Facility means a fiber optic cable, support messenger and lashing which contains internal or external components capable of conducting electricity.

(1)    Electrically Isolated means the conductive members of a non-dielectric fiber optic cable facility have been conditioned to prevent the transfer of system voltages from one level on a structure to another.  For example, from supply to communications or from one supply level to another.  The appropriate level of isolation may be achieved through electrical or mechanical methods.  Mechanical methods shall be engineered for the voltage and conditions to which the facility is exposed, but not less than a 15” minimum gap, used in conjunction with a non-conductive closure.

Final Version

Rule 20.3

20.3    Cable means a stranded conductor (single conductor cable) or a combination of conductors insulated from one another (multiple-conductor cable).

A.    Fiber Optic Cable (Communication) means a fiber optic cable meeting the requirements for a communication circuit and located at the communication level. 

B.    Fiber Optic Cable - Supply means a fiber optic cable located at the supply level.

C.    Dielectric Fiber Optic Cable Facility means a fiber optic cable, support messenger and lashing wire which contains no internal or external components capable of conducting electricity.  A Dielectric Fiber Optic Cable Facility does not include pole mounted hardware or splice closures; for example, bolts, fasteners or clamps

D.    Non-dielectric Fiber Optic Cable Facility means a fiber optic cable, support messenger and lashing which contains internal or external components capable of conducting electricity.

(1)    Electrically Isolated means the conductive members of a non-dielectric fiber optic cable facility have been conditioned to prevent the transfer of system voltages from one level on a structure to another.  For example, from supply to communications or from one supply level to another.  The appropriate level of isolation may be achieved through electrical or mechanical methods.  Mechanical methods shall be engineered for the voltage and conditions to which the facility is exposed, but not less than a 15” minimum gap, used in conjunction with a non-conductive closure.