The Electrical Inspector shall not require permits for:
(A) The replacement of lamps;
(B) The connection of portable devices to suitable receptacles which have been permanently installed;
(C) The installation, alteration or repair of wiring, devices, appliances or equipment for the operation of signals or the transmission of intelligence; or
(D) Public service corporations for the installation of equipment necessary in the generation, transmission and distribution of electric energy.
(`95 Code, § 5-3-36)