Electrician was out today to approve a generator sub panel and saw my new hot tub sub panel. While he wasn't there to inspect it he asked what it was for, when I told him he said I had to either dig up the concrete and have the tub on bare earth, or, put down a bonding system with ceramic tile on top.
The tub is going in doors, but I can not find any references to this type of requirement anywhere. Any electricians out there verify this ? My county doesn't have special local codes they use :Electrical - 2011 National Electrical Code,
2011 Michigan Electrical Code Rules Part 8
I think this is BS ?