Service Drop Roof Clearance

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.

Service drop roof clearance.

What is the minimum service drop clearance above a 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. But our measurements showed that the service drop was just outside of the 10 foot distance from the pool and the lowest part of the drop was slightly above the 10 foot necessary clearance above a walkway and not over the adjacent flat roof so the 14 5 foot distance measured diagonally from the edge of the water did not have to comply with 22 5 foot diagonally measured standard. Electrical service wire clearance distance over roadway 18 ft.

Electrical service wire clearance distance over roadway flat roof 8 10 ft. What is the minimum clearance of overhead electric service drop wires above a house roof. 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 allowable exceptions. Service drop height requirements.

In general a service drop must be at least 12 feet above the ground grade as well as sidewalks and residential driveways. Service drop conductors when not in excess of 300 volts phase to ground shall have the following minimum clearance at the lowest point of the span.