I wish I had your problems George. In the rural municipalities I inspect there are no local ordinances requiring any exit or emergency lighting in commercial buildings at all. I have a child day care center that wants to get its state license and the only requirement in the licensing act for day care centers is that they need a sign above each door with ¾” letters indicating that it’s an exit. I even called the State Fire Marshal on this one and he said sorry but true. I’d love to enforce the rules if only I had them to enforce.
I see that you are an electrical inspector. Have you talked with the building inspectors? According to the ICC web site, the IBC has been adopted statewide in Mich. For the 2003 IBC, 1006.3 covers the requirement for emergency lighting and 2702.2.3 requires emergency power for the exit signs. For the 2000 IBC, the sections would be 1003.2.11.2 and 1003.2.10.5.