insert
(2) The chief executive may exempt a person from the application of subregulation (1) (a) to the installation of an appliance if the chief executive believes on reasonable grounds that—
(a) compliance with the relevant codes does not justify the cost of compliance; and
(b) the degree of safety reached in other ways is acceptable.
(3) The chief executive must give the person written notice of the exemption.
(4) An exemption under this regulation is subject to any condition stated in the exemption.