Power Line Clearance Over Roof

Over a roof with 4 12 slope or more b 3 feet.

Power line clearance over roof.

Over a roof with 4 12 slope or more within 4 feet of roof edge at eaves c 18 inches. Overhead electrical service wire clearance distance over roadway roof 18 at mast 3 ft. Above decks and balconies including out 3 feet g h 10 feet. Overhead spans of open conductors and open multiconductor cables shall have a vertical clearance of not less than 2.

Electrical service wire clearance distance over roadway driveway 12 ft. Where lines are over pathways likely to be used by riders on horseback the minimum clearance for overhead wires is 16 feet. The vertical clearance regulation is dependent on whether or not the roof is available to pedestrians. 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.

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. 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. 225 19 clearances from buildings for conductors of not over 1000 volts nominal.