24.1-06-02-30. (NEC 230) Services.

Electrical services must comply with article 230, 2026 edition, National Electrical Code (first version, printed in 2025).

1. Perpendicular mast used for support of a service may not be less than two-inch [5.08-centimeter] galvanized rigid steel conduit or intermediate metal conduit, fitted with storm collar flashing.

2. Outside switch location. Equipment for an outside switch location may not be mounted lower than two feet [.6061 meter] above grade level unless listed for such purpose.

3. All services in single-family dwellings must be located in a single accessible location.

Exception: Special permission must be granted by the electrical inspector for a second service location to be added where there is no available space for the service equipment. The second service location must be installed in accordance with article 230.2, 2026 edition, National Electrical Code (first version, printed in 2025).

4. Rating of service switch. Any new or old single-family dwelling where the main house panel or service is altered or repaired, the dwelling is moved, or where the dwelling is rewired, a minimum one hundred ampere service-rated panel must be installed. Replacement of service mast or meter enclosure is an alteration of the service.

Service and feeder calculation for electric heating loads must be sized to one hundred twenty-five percent of the full load rating.

5. For the purpose of separating services within one building, each portion of a building separated by one or more fire walls must be considered a separate building as defined by the locally adopted codes or the State Building Code and state fire codes.

History: Effective April 1, 2017 amended effective October 1, 2020; July 1, 2024; July 1, 2026.

General Authority: NDCC 43-09-05

Law Implemented: NDCC 43-09-21, 43-09-22