Original General Order 95 

Section VIII

Detailed Construction Requirements for Communication Lines
(Class C Circuits) 

86.7    Location of Sectionalizing Insulators

A.    Overhead Guys All insulators in overhead guys shall be not less than 8 feet above the ground.

(1)    Exposed: Ungrounded overhead guys which are required by Rule 86.6-B1 to be sectionalized because of exposure to supply conductors of 250-20,000 volts shall have an insulator not less than 6 feet and not more than 9 feet (measured along the guy) from each point of attachment to wood poles or structures which support conductors. One insulator will suffice where such an overhead guy is less than 17 feet in length between wood poles or structures.

(2)    In Proximity: Overhead guys which are required to be sectionalized by Rule 86.6-B2 shall have an insulator not less than 6 feet and not more than 9 feet (measured along the guy) from each point of attachment to poles, crossarms or structures (see App. G, Figs. 47 and 48).

Excepted from this requirement are guys to poles which support no conductors provided such guys are not in proximity to supply conductors of 0-20,000 volts on any poles other than the poles to which they are attached. Such guys, if required to be sectionalized by Rule 86.6-B2, shall have an insulator 6 to 9 feet from the point of attachment to the pole which supports conductors (see App. G, Figs. 44b and 44e).

B.    Anchor Guys

An insulator shall be installed in each anchor guy which is required to be sectionalized by Rule 86.6-B2, so that such insulator is located not less than 8 feet above the ground and either 8 feet below the level of the lowest supply conductor or not less than 6 feet from surface of pole and not, less than one foot below the level of the lowest supply conductor. These sectionalizing requirements for anchor guys can normally be met by insulation at one location; however, short guys or other conditions may require insulation at two locations, one location being not less than 8 feet above the ground and the other location either not less than 8 feet below the lowest supply conductors, or not less then 6 feet horizontally from pole and not less than one foot below the level of the lowest supply conductor. In order to prevent trees, buildings, messengers, metal-sheathed cables or other similar objects from grounding portions of guys above guy insulators, it is suggested that anchor guys be sectionalized, where practicable,. near the highest level permitted by this Rule 86.7-B.

Anchor guys which pass through the level of supply conductors at positions other than between pole pin positions or outside of the outer pin positions, shall be sectionalized by means of an insulator placed below the supply conductors in accordance with the foregoing provisions of this rule, and in addition thereto an insulator shall be placed not less than 2 feet above the supply conductor level. An insulator or insulators shall be located in "sidewalk" guys so that no grounded horizontal brace is less than 8 feet below the lowest supply conductor.

C.    Truss Guys

An insulator shall be installed in each truss guy which is required to be sectionalized by Rule 86.6-B, so that such insulator is located not less than 8 feet above the ground and not less than 8 feet below the level of the lowest supply conductor passing within 6 feet of the guy. These requirements can normally be met by insulation at one position; however, in certain unusual conditions the distances above ground and below conductors may overlap, in which case insulation will be necessary at two positions.