Section R. 400.18620 - Electrical wiring and equipment; oil and gas burnersRule 620.
(1) Electrical wiring and equipment shall be installed in accordance with the provisions of Act 217 of the Public Acts of 1956, as amended, being S338.881, et seq. of the Michigan Compiled Laws and the 1971 edition of the national electrical code which is adopted by reference in R 400.18659.(2) Only oil and gas burners that are approved by underwriters laboratories, incorporated, in its gas and oil equipment list, or by the American gas association shall be approved for use in facilities.Mich. Admin. Code R. 400.18620