Service Mast Height Above Roof

Meter base mounted on exterior wall of house or mobile manufactured home for overhead service weather head must be a minimum of three feet above the roof.

Service mast height above roof. 2 inch for 2 conductors 100 amp loop. The addition makes the mast less than 1 foot near the new gutter of the roof. Over a roof with 4 12 slope or more within 4 feet of roof edge at eaves c 18 inches above decks and balconies including out 3 feet g h 10 feet to the sides and below an openable window i 3 feet. Rigid galvanized steel conduit and roof plate conduit sizes.

For underground service the poured footing must be notched out for the conduit. Most utilities will require bracing or guy wires for additional support of any mast that is taller than 3 feet. One of the exceptions is the most common type of residential overhead electric service type so we will start with it. 2 inch for 4 0 conductors 200 amp loop.

On 2018 04 12 by willie i have added on to a house with overhead service. As the guidelines include 8 10 ft above any flat roof and no less than 24 above a gable roof at the mast head your cables are too close to the gutters. Thru roof mast type overhead service combination entrance type 120 240 volt single phase 100 amp 200 amp 300 amp consumer to provide and have installed 1. Flat roofs need to have at least 8 feet of clearance and balconies need at least 10 feet of 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. The service mast should not be more than 3 feet vertically above the roof line.