Service Drop Clearance Over Roof

Conductors shall have a clearance of not less than 8 ft.

Service drop clearance over roof.

Typically a service head consists of a rigid steel conduit like a big pipe that runs up through the roof or along an exterior wall and is topped with a shell like fitting called a weatherhead or weather cap. The service drop should not pass closer than to the bottom front or sides of a window. Service drop conductors meet these requirements. 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.

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. Electrical service wire clearance distance over roadway walkway 10 ft. The point of attachment for service drop conductors must not be less than 10 ft above the finish grade and must be located so the minimum service conductor clearance required by 230 24 b can be maintained. The minimum clearance above only the overhanging portion of the roof shall not be less than 18 inches 457 mm where not more than 6 feet 1829 mm of overhead service conductor length passes over 4 feet 1219 mm or less of roof surface measured horizontally and such conductors are terminated at a through the roof raceway or approved support.

When the service drop reaches the house it connects to an assembly called the service head also know as the service mast or masthead. In most cases each service drop or lateral must supply only one set of service entrance conductors. 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. Electrical service wire clearance distance over roadway roof 18 at mast 3 ft.

From the highest point of roofs over which they pass with the following exceptions. Where the voltage between conductors does not exceed 300 and the roof has a slope of. Electrical service wire clearance distance over roadway flat roof 8 10 ft. 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.

The minimum service drop clearance over a flat roof used as a roof garden is. What is the minimum clearance of overhead electric service drop wires above a house roof.