Original Version
Rule 54.7-A3
54.7-A3) Allowable Climbing Space Obstructions:
Crossarms and their supporting members are allowed in climbing spaces. Insulators and their attaching brackets which support line conductors may extend not more than one-half of their diameter into the climbing space.
Suitably protected vertical conductors attached to the surfaces of poles, and guys, (except those guys contacting metal pins or dead-end hardware as specified in Rule 52.7-D) are allowed in climbing spaces provided that not more than two guys (provided they are separated at the pole by a vertical distance of not more than 18 inches) and one vertical riser, run, or ground wire are installed in any 4-foot vertical section of climbing space.
Bolts bonded to or used for the attachment of dead-end hardware of a circuit of any voltage in horizontal (wood crossarm) configuration may project into the climbing space provided they are covered with non-conducting material as specified in Rule 22.2-F. If such bolts are bonded, a positive electrical contact shall be made.
The covering of bolts required by this rule shall not apply to:
a) Bolts associated with circuits of 0 to 750 volts at any level on pole or structure.
b) Bolts associated with circuits of more than 7500 volts when located at the top level of a pole.
Modifications of these requirements for rack construction are specified in Rule 54.9-F; for switches in Rule 58.5-D: and for climbing space without wood crossarms in Rule 54.11-G.
Strikeout and Underline Version
Rule 54.7-A3
54.7-A3) Allowable Climbing Space Obstructions:
Crossarms and their supporting members are allowed in climbing spaces. Insulators and their attaching brackets which support line conductors may extend not more than one-half of their diameter into the climbing space.
Suitably protected vertical conductors attached to the surfaces of poles, and guys, (except those guys contacting metal pins or dead-end hardware as specified in Rule 52.7-D) are allowed in climbing spaces provided that not more than two guys (provided they are separated at the pole by a vertical distance of not more than 18 inches) and one vertical riser, run, or ground wire are installed in any 4-foot vertical section of climbing space.
Bolts bonded to or used for the
attachment of dead-end hardware of a circuit of any voltage in horizontal (wood
crossarm) configuration may project into the climbing space provided they are
covered with non-conducting material as specified in Rule 22.2-FC. If such bolts are bonded, a positive
electrical contact shall be made.
The covering of bolts required by this rule shall not apply to:
a) Bolts associated with circuits of 0 to 750 volts at any level on pole or structure.
b) Bolts associated with circuits of more than 7500 volts when located at the top level of a pole.
c) Bolts associated with brackets and non–wood crossarms.
Modifications of these
requirements are specified in: Rule 54.9-F for rack construction are
specified in Rule 54.9-F; for switches in Rule 58.5-D 58.3-A3 for switches:
and Rule 54.11-G for climbing space without wood crossarms in Rule
54.11-G.
Final Version
Rule 54.7-A3
54.7-A3) Allowable Climbing Space Obstructions:
Crossarms and their supporting members are allowed in climbing spaces. Insulators and their attaching brackets which support line conductors may extend not more than one-half of their diameter into the climbing space.
Suitably protected vertical conductors attached to the surfaces of poles, and guys, (except those guys contacting metal pins or dead-end hardware as specified in Rule 52.7-D) are allowed in climbing spaces provided that not more than two guys (provided they are separated at the pole by a vertical distance of not more than 18 inches) and one vertical riser, run, or ground wire are installed in any 4-foot vertical section of climbing space.
Bolts bonded to or used for the attachment of dead-end hardware of a circuit of any voltage in horizontal (wood crossarm) configuration may project into the climbing space provided they are covered with non-conducting material as specified in Rule 22.2-C. If such bolts are bonded, a positive electrical contact shall be made.
The covering of bolts required by this rule shall not apply to:
a) Bolts associated with circuits of 0 to 750 volts at any level on pole or structure.
b) Bolts associated with circuits of more than 7500 volts when located at the top level of a pole.
c) Bolts associated with brackets and non–wood crossarms.
Modifications of these requirements are specified in: Rule 54.9-F for rack construction; for switches in Rule 58.3-A3 for switches: and Rule 54.11-G for climbing space without wood crossarms.