Change List for this Rule

 

Original Version

Rule 87.4-C3

 

87.4-C3)    Attached To Poles: On poles which carry no supply conductors and no crossarms, communication cables or messengers attached to the sides of poles may be placed in any position within 3 feet of the top of the pole pro- vided metal-sheathed cables or messengers are separated from open wire conductors in this section of the pole by a vertical distance of not less than 12 inches.  

On poles which carry no supply conductors (except supply service drop clearance attachments) and which support communication conductors on crossarms, messengers and cables may be attached to surface of pole between crossarms or less than 2 feet below the conductors on the lowest crossarms, provided such messengers or cables are placed on one side of pole only and any conductor on the opposite side of the pole, less than 36 inches vertically from such messenger and cable, shall be not less than 24 inches (if an exchange conductor) or not less than 18 inches (if a toll conductor) horizontally from such messenger or cable (see .App. G, Fig. 85).

On poles which carry no supply conductors (except supply service drop clearance attachments) and which support communication conductors on crossarms, messengers and cables may be attached directly to opposite sides of pole provided such attachments are not less than 2 feet below the lowest level of communication conductors supported on a crossarm and provided that the vertical separation between such messengers or cables and open wire conductors in the same configuration shall be not less than 12 inches.

Cables or messengers where attached to the surface of poles which support supply conductors, shall be not less than 6 feet vertically below the level of supply conductors, except that this minimum clearance of 6 feet may be reduced to not less than 4 feet below supply conductors of 0-750 volts provided a guard arm is placed above the messenger and cable (or self-supporting cable) in accordance with the provision of Rule 87.7-B (see Rule 20.9-D for guard arm definition). No cable or messenger, where attached to surface of such a pole, shall be less than 2 feet below the lowest level of communication conductors on crossarms unless a horizontal separation of not less than 30 inches is maintained between the messenger or cable and the communication conductors on the opposite side of pole.


Strikeout and Underline Version

Rule 87.4-C3

 

87.4-C3)    Attached To Poles: On poles which carry no supply conductors and no crossarms, communication cables or messengers may be attached to the sides of poles may be placed in any position within 3 feet of the top of the pole pro- vided metal-sheathed cables or messengers are separated from open wire conductors in this section of the pole by a vertical distance of not less than 12 inches.  

On poles which carry
where communication conductors are supported on crossarms no supply conductors (except supply service drop clearance attachments) are attached and which support communication conductors on crossarms, apply the provisions of Rule 84.4D1 messengers and cables may be attached to surface of pole between crossarms or less than 2 feet below the conductors on the lowest crossarms, provided such messengers or cables are placed on one side of pole only and any conductor on the opposite side of the pole, less than 36 inches vertically from such messenger and cable, shall be not less than 24 inches (if an exchange conductor) or not less than 18 inches (if a toll conductor) horizontally from such messenger or cable (see .App. G, Fig. 85Fig. 84-2).  

On poles which carry no supply conductors (except supply service drop clearance attachments) and which support communication conductors on crossarms, messengers and cables may be attached directly to opposite sides of pole provided such attachments are not less than 2 feet below the lowest level of communication conductors supported on a crossarm and provided that the vertical separation between such messengers or cables and open wire conductors in the same configuration shall be not less than 12 inches.
 

Cables or messengers where attached to the surface of poles which support supply conductors, shall be not less than 6 feet vertically below the level of supply conductors. except that 

 

Exception:    That this minimum clearance of 6 feet may be reduced to not less than 4 feet below supply conductors of 0-750 volts provided a guard arm is placed above the messenger and cable (or self-supporting cable) in accordance with the provision of Rule 87.7-B (see Rule 20.9-D for guard arm definition). No cable or messenger shall be, where attached to the surface of such a pole, shall be less than 2 feet below the lowest level of communication conductors on crossarms unless a minimum horizontal separation of not less than 30 inches is maintained between the messenger or cable and the communication conductors on the opposite side of pole.


Final Version

Rule 87.4-C3

 

87.4-C3)    Attached To Poles: On poles which carry no supply conductors and no crossarms, communication cables or messengers may be attached to the sides of poles in any position within 3 feet of the top of the pole pro- vided metal-sheathed cables or messengers are separated from open wire conductors in this section of the pole by a vertical distance of not less than 12 inches.

On poles where communication conductors are supported on crossarms no supply conductors (except supply service drop clearance attachments) are attached apply the provisions of Rule 84.4D1 and Fig. 84-2.

Cables or messengers where attached to the surface of poles which support supply conductors, shall be not less than 6 feet vertically below the level of supply conductors.

 

Exception:    That this minimum clearance of 6 feet may be reduced to not less than 4 feet below supply conductors of 0-750 volts provided a guard arm is placed above the messenger and cable (or self-supporting cable) in accordance with the provision of Rule 87.7-B (see Rule 20.9-D for guard arm definition). No cable or messenger shall be, attached to the surface of such a pole, less than 2 feet below the lowest level of communication conductors on crossarms unless a minimum horizontal separation of 30 inches is maintained between the messenger or cable and the communication conductors on the opposite side of pole.