(1) The department of labor and industry shall adopt rules relating to the installation of wires and equipment to convey electrical current and installations of apparatus to be operated by current, except as provided in 50-60-602.
(2) The department may adopt by reference the national fire protection association standard NFPA 70, national electrical code, in whole or in part, and may adopt rules more stringent than those in the national fire protection association standard NFPA 70, national electrical code.