(1) In this Part, electrical installation means a group of items of electrical equipment that:
(a) are permanently electrically connected together; and
(b) can be supplied with electricity from the works of an electricity supply authority or from a generating source.
(2) An item of electrical equipment may be part of more than one electrical installation.
(3) In paragraph (1)(a):
(a) an item of electrical equipment connected to electricity by a plug and socket outlet is not permanently electrically connected ; and
(b) connection achieved through using works of an electricity
supply authority is not a consideration in determining whether or not
electrical equipment is electrically connected .