General Order 64-A

Section VII

Detailed Construction Requirements For Trolley Lines

(Class T Circuits)

76.4    Clearances.

A.    General.

The clearances of guys from the ground and from other wires is specified in Tables 1 and 2.  Overhead guys passing through the level of conductors of different ownership shall do so only between pole pin positions or outside the outer pin position on the cross arm.  All other guys passing through the levels of other conductors shall maintain the clearances of Table 2, Case 16, recognizing the requirements for suture construction as indicated by installed facilites.

Guys passing in proximity to poles or structures shall be maintained not less than a 3 inch horizontal distance from the surface thereof wherever possible.

The  vertical clearance of 8 feet between guys and buildings (Table 1, Case 6, Column A) may be reduced to 2 feet over roofs of ¼ pitch (26° from the horizontal) or greater.

B.    Two Or More Guys.

(1)    Non-Grounded:  Where two or more overhead or span guys are attached to the same poles, either or both of which support supply conductors, there shall be a vertical separation of at least one foot between the points of attachment on the pole, or poles, which support the supply conductors.  In cases where such separation is not practicable other means to insure the effectiveness of the guy insulator may be employed, but in no case shall the distance between any guy and the surface of the insulator in any other guy be less than 3 inches measured perpendicularly at the insulator.  This rule shall not prohibit the contact of such guys to the same shims and shall not apply to guys acting in different directions, nor to guys in which insulators are not required.

(2)    Grounded:  Where two or more guys are attached to the same pole carrying supply conductors and the same grounded anchorage, either directly or through the medium of a stub, they shall be separated at the pole by a vertical distance of at least one foot excepting that in the case of direct passage from pole to grounded anchorage, the separation may be obtained at the ground line.  In cases where such separation is not practicable other means to insure the effectiveness of the guy insulator may be employed but in no case shall any guy and the surface of the insulator in any other guy be less than 3 inches measured perpendicularly at the insulator.  The provisions of this rule do not apply to guys which pull in different directions from the pole or to guys attached to grounded metal structures or which do not require insulators.