In this Part:
"authorised person" means a person who is - (a) competent for the purpose of this Part, in relation to which the expression is used, (b) either an employer, a self-employed person, or an employee appointed or selected by the employer or self-employed person, and (c) engaged in work or duties incidental to the generation, transformation, conversion switching, controlling, regulating, rectification, storage, transmission, distribution provision, measurement or use of electrical energy;
"circuit" means part of an electrical installation supplied from the same origin, which may be protected against overcurrents by the same protective device;
"circuit breaker" means an electro-mechanical device capable of making, carrying and breaking currents under normal circuit conditions and also capable of making, carrying for a specified time, and breaking currents under specified abnormal circuit conditions such as those of short circuit;
"conductive part" means a part capable
…