A Certificate D shall be issued to municipalities, schools, hospitals, colleges, or other non-manufacturing firms or establishments that regularly employ one or more licensed electricians (journeyperson/Class B or Class M) when the work performed by those individuals is limited to the maintenance of electrical wiring, devices, appliances, and equipment on the premises owned or occupied by the applicant. The application must contain a description of the premises within which work is to be done under the permit. All work must meet electrical and municipal codes and must be permitted accordingly by the municipality.