Persons (other than licensed suppliers) who—
(1) do not supply any electricity except—
(a)electricity which is supplied to their premises by—
(i)a licensed supplier; or
(ii)by a person in circumstances such that he falls within Class C in this Schedule (in this Class referred to as a “Class C supplier”) provided that for the purpose of determining for the purpose of this Class and paragraphs B.1 and B.2 below whether a person is supplying electricity in such circumstances paragraph (2)(a), (b), (c), (d) and (e) in Class C in this Schedule shall have effect as if sub-paragraph (ii) and the preceding “and”, in each case, were omitted; or
(b)electricity which they generate themselves or which is supplied to them by a person authorised by an exemption to supply electricity when—
(i)the supply of electricity which is normally available to them from a licensed supplier or a Class C supplier (their “normal supply”) is interrupted temporarily due to circumstances outside their control; or
(ii)the plant or equipment which is used to generate electricity for the purpose of giving their normal supply is being tested; and
(2) to the extent that they supply Class C electricity—
(a)supply such electricity only to premises, which are on the same site as the relevant premises; and
(b)comply with all the conditions set out in paragraph B. 2 below.