Change List for this Rule


General Order 95


Section V


Detailed Construction Requirements for Supply Lines
(Class H, L and T Circuits)


57.7    Use of Guard Arms and Coverings


Any guard arm which is required to be installed by the provisions of Rule 57.4F shall be at least 4 feet in length (Rule 21.0D ) and parallel to and not more than 4 inches above the top of the cable or messenger. In lieu of the guard arm, suitable protective covering ( Rule 22.8 ) at least 4 feet in length may be placed around the cable and messenger.

Double guard arms shall be used where such a messenger or cable is dead ended on or wrapped around a wood pole, at a vertical separation of less than 6 feet below unprotected supply conductors of other circuits of 750 volts or less. Portions of cables which take the form of a riser or a grounded lateral or vertical run shall be covered as specified in
Rule 54.6E for risers.


Note:    Revised January 21, 1992, by Resolution SU10.