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 57.4–F
shall be at least 4 feet in length (Rule
21.0–D
) 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 54.6–E
for risers.