The Electricity (Northern Ireland) Order 1992

8.—(1) It shall be the duty of a meter examiner, on being required to do so by any person and after giving notice to such persons as may be prescribed—

(a) to examine and test any meter used or intended to be used for ascertaining the quantity of electricity supplied to any premises;

(b) to determine whether it is of an approved pattern or construction and, if it is installed for use, whether it is installed in an approved manner;

(c) to determine whether it is in proper order for ascertaining the quantity of electricity supplied within the prescribed margins of error and, if it has been in use and there is a dispute as to whether it registered correctly at any time, to determine if possible whether it registered within those margins at that time; and

(d) to make a written report of his conclusions as to the matters mentioned in heads (b) and (c).

(2) If a meter examiner determines that a meter is, or was at any time, operating outside the prescribed margins of error, he shall if possible give an opinion as to—

(a) any period for which the meter has or may have been so operating; and

(b) the accuracy (if any) with which it was or may have been operating for any such period.

(3) Regulations under this paragraph may make provision for determining the fees to be paid for examining and testing meters, and the persons by whom and the circumstances in which they are to be paid.

(4) In relation to a meter used or intended to be used in connection with an exempt supply, this paragraph shall have effect as if any reference to the prescribed margins of error included a reference to any margins of error agreed between the electricity supplier and the customer.