How High Should My Service Drop Be From My Roof

The National Electric Lawmaking (NEC 230.24(A)) requires that overhead service wires (conductors) exist a minimum of viii feet above a roof, including for a minimum 3 feet in all directions from the edge of the roof, but and so provides four commanded exceptions. One of the exceptions is the almost mutual type of residential overhead electric service type, and then we will start with it. If the service mast is a "through-the-roof" installation, meaning that it only penetrates the roof at the overhang to come down to a meter at the exterior wall below, as in the photograph in a higher place, and then the wires are merely required to articulate the roof by 18 inches.

     There are a couple of further stipulations for this exception to be immune:

1. The mast must be located within 4 feet of the edge of the roof, so maximum roof overhang is 4 feet.
2. Non more than 6 feet of service wires are allowed to pass over the roof. This is intended to avoid an installation with wires that run diagonally beyond the roof overhang near the border for an extended distance at the low xviii-inch height.

    The 2nd exception allows a reduction to 3 feet above the roof when the roof pitch is 4/12 (4 inches of ascent for every 12 inches of horizontal run) or more. In that location are no restrictions on the length of service conductors over the roof. The logic behind this exception is that steeply sloped roofs are not probable be be walked on by anyone except workers on the roof.

    Exemption number three allows service conductors fastened to the side of a building below roof level to be exempt from "8 foot clearance up to iii feet from border of roof" dominion to enable attachment to the structure.

    The last exception in the NEC states that areas above roof surfaces that are subject to vehicular or pedestrian traffic must meet the same standards for service usher clearance above the ground for the particular type of traffic, as outlined in NEC 230.24(B). This is an unusual scenario for residential construction, and would actually increment the clearance requirements when there is vehicular traffic.

    For an overview of the clearance requirements between utility pole and house, run across our blog mail What is the minimum overhead electric service drop height/clearance to a business firm? And for swimming pool minimums, run into our blog post What are the clearance requirements for an overhead electric service drop that is direct over or near a  swimming pool?  Also, What is the electric "service point" of a house?

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Hither's links to a collection of our other blog posts well-nigh ELECTRICAL WIRING:

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Source: https://www.howtolookatahouse.com/Blog/Entries/2018/6/what-is-the-minimum-clearance-of-overhead-electric-service-drop-wires-above-a-house-roof.html#:~:text=The%20National%20Electric%20Code%20(NEC,then%20provides%20four%20allowable%20exceptions.

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