Nec Service Drop Clearance Over Roof

For the clearance requirements over a swimming pool see our blog post what are the clearance requirements for an overhead electric service drop that is directly over or near a swimming pool.

Nec service drop clearance over roof.

225 19 clearances from buildings for conductors of not over 1000 volts nominal. The national electrical code nec and national electrical safety code nesc mandate acceptable clearances for power lines to keep the public safe and prevent contact with electrical current. Overhead electrical wire clearances electrical masthead electrical service entry defects how to inspect the electrical service drop at a building sketches illustrate defects found when inspecting the electrical service drop or service lateral bringing electrical power to a building electrical service drop wire clearances and other defects questions. Where the voltage does not exceed 300v between conductors overhead conductor clearances from the roof can be reduced from 8 ft to 3 ft if the slope of.

Remember though that local rules may vary from the national guidelines set forth by the nec and nesc. Overhead service conductors must maintain a minimum clearance of 8 ft above the surface of a roof for a minimum distance of 3 ft in all directions from the edge of the roof. Minimum height requirements for service drop cables are determined by the local building or electrical codes but most follow the recommendations of the national electrical code nec. In general a service drop must be at least 12 feet above the ground grade as well as sidewalks and residential driveways.

Service drop height requirements. And for a more detailed exploration of the requirements as the service wires cross above a roof see our blog post what is the minimum clearance of. Saturday june 30 2018 the national electric code nec 230 24 a requires that overhead service wires conductors be a minimum of 8 feet above a roof including for a minimum 3 feet in all directions from the edge of the roof but then provides four. There must not be more than 6 feet of service drop conductors over the overhang portion of the roof and the service mast can t be located more than 4 feet.

What is the minimum clearance of overhead electric service drop wires above a house roof.