Michigan Compiled Laws, Chapter 339. Occupational Code § 339.5731

Sec. 731.  (1) Except as otherwise provided in section 737,  1only an individual who is licensed under this article shall install electrical wiring.  In a municipality where inspection service is provided, a person shall obtain a permit from the board or municipality that has jurisdiction.

(2) If electrical wiring is installed without compensation by a person that is licensed under this article for or on behalf of a charitable organization, the owner of the property on which the work is performed may obtain the permit required under subsection (1).  However, the charitable organization exception under this subsection applies only to the reconstruction, renovation, or remodeling of 1- to 4-family dwellings.

(3) Except as otherwise provided in section 737, a person shall not erect, install, alter, repair, service, or maintain fire alarm system wiring, devices, appliances, or equipment in a building or structure without a license.

(4) Except as otherwise provided in section 737, a person shall not install, connect, repair, or maintain electric signs and related wiring without a license.

(5) Notwithstanding any other provisions of this article and after a proper application is submitted and the appropriate fees paid, the board and department shall issue a license without examination to an individual seeking sign specialty licensure if he or she is licensed, registered, or otherwise regulated in another state and the board determines that the standards in the other state meet or exceed the standards imposed in this article.