14 Meaning of “electrical equipment”
(1) “Electrical equipment” is any apparatus, appliance, cable, conductor, fitting, insulator, material, meter or wire—

(a) used for controlling, generating, supplying, transforming or transmitting electricity at a voltage greater than extra low voltage; or
(b) operated by electricity at a voltage greater than extra low voltage;
or
(c) that is, or that forms part of, a cathodic protection system.

(2) However, “electrical equipment” does not include any apparatus, appliance, cable, conductor, fitting, insulator, material, meter or wire forming part of a vehicle if—

(a) it forms part of a unit of the vehicle that provides propulsion for the vehicle; or
(b) its source of electricity is a unit of the vehicle that provides propulsion for the vehicle.