Power Line Clearance Over Roof

The vertical clearance regulation is dependent on whether or not the roof is available to pedestrians.

Power line clearance over roof.

In general overhead service conductors must maintain a minimum vertical clearance of 8 feet above the surface of a roof for a minimum distance of 3 feet in all directions from the edge of the roof 230 24 a. Overhead electrical service wire clearance distance over roadway roof 18 at mast 3 ft. Overhead spans of open conductors and open multiconductor cables shall have a vertical clearance of not less than 2. The vertical clearance above the roof level shall be maintained for a distance not less than 900 mm 3 ft in all directions from the edge of the roof.

7 m 8 ft 6 in above the roof surface. Where lines are over pathways likely to be used by riders on horseback the minimum clearance for overhead wires is 16 feet. Over a roof with 4 12 slope or more b 3 feet. To the sides and below an openable window i 3 feet.

Over a roof with 4 12 slope or more within 4 feet of roof edge at eaves c 18 inches. If the roof is not accessible to pedestrians the electrical line must be no less than 12 5 feet from the highest point of the roof. Above decks and balconies including out 3 feet g h 10 feet. 225 19 clearances from buildings for conductors of not over 1000 volts nominal.