No electrical equipment shall be installed within or on any building, structure or premises, publicly or privately owned, nor shall any alteration or addition be made in any such existing equipment without first securing a permit therefor from the Inspector, except as provided in §
175-49 and except that no permit will be required to execute any of the following classes of electrical work:
A. Minor repair work, the replacement of lamps or the connection of
portable electrical equipment to suitable permanently installed receptacles.
B. The installation, alteration or repair of electrical equipment for
the operation of signals or the transmission of intelligence.
C. The installation, alteration or repair of electrical equipment installed
by or for an electricity supply agency for the use of such agency
in the generation, transmission, distribution or metering of electricity.
D. Any work involved in the manufacturing, testing, servicing, altering
or repairing of electrical equipment or apparatus, except that this
exemption shall not include any permanent wiring other than that required
for testing purposes.
No person shall make connection from a supply of electricity
or supply electricity to any electrical equipment for the installation
of which a permit is required, or which has been disconnected or ordered
to be disconnected by the Inspector, until such connection has been
authorized by the Inspector.