Original General Order 95

Section V

Detailed Construction Requirements for Supply Lines

(Class H, L and T Circuits)

56.7    Location of Sectionalizing Insulators

A.    Overhead Guys

Insulators installed in overhead guys to sectionalize such guys as required by any portion of Rule 56.6 shall be located at a distance of not less than 6 feet and not more than 9 feet, measured along the guys, from the points of attachment of the guys to poles, crossarms or structures (see App. G, Fig 46).  In such overhead guys which are less than 17 feet in length with no section grounded, insulation at one location, approximately equidistant from each support will be sufficient.

Overhead guys attached to wood poles, crossarms or structures and to grounded anchor guys or metal poles shall be sectionalized at not less than one location, 6 to 9 feet (measured along the guys) from the attachment at the wood pole or structure (see App. G, Fig 46).

Branched guys, sometimes referred to as bridle guys, which are attached at two or more positions to the same crossarm or pole line structure, and which are required under the provisions of Rule 56.6 to be sectionalized, shall be sectionalized by means of insulators in each branch or by means of insulators in the main guy and all branches except one, so that no two branches of such guy constitute a continuous metallic path between separate points of attachment to crossarms or structures (see App. G, Fig 50).  In conforming with these requirements, insulators in branches of guys should be placed as far as practicable from attachments at pole or crossarm but not more than 9 feet therefrom.

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

B.    Anchor Guys

An insulator shall be installed in each anchor guy which is required to be sectionalized by Rule 56.6-A or 56.6-B, 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 6 feet from surface of pole and not less than one foot below the level of the lowest supply conductor (see App. G, Fig. 49).  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 conductor, or not less than 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 56.7-B.

Ungrounded portions of anchor guys which pass through the level of communication conductors at positions other than between pole pin positions or outside of the outer pin position shall be sectionalized by insulators placed neither less than 6 inches nor more than 18 inches above the level of the communication conductors (see App. G., Fig. 49b).

Any anchor guy which enters the ground less than 8 feet below the lowest level of supply conductors on the pole or structure shall be treated as an overhead guy which is grounded by means of a grounded anchor guys or metal pole.

A grounded horizontal brace of a “sidewalk” guy shall in no case be less than 8 feet below the level of the lowest unprotected supply conductor on the3 same pole (see App. G, Fig 51b).

C.    Truss Guys

An insulator shall be installed in each truss guy which is required to be sectionalized by Rule 56.6-A, 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 8 feet of the guy (see App. G, Fig. 51).  These requirements can normally be met by insulation at one portion; however, in certain unusual conditions the two 8-foot distances may overlap, in which case insulation will be necessary at two positions.