Alan, suppose those lugs had been bolted to a separate plate of plywood, then screwed as an assembly to the backboard. There'd be a full thickness of plywood between live parts and the enclosure. Would you have accepted it then?
Don't know for sure how Alan would feel, but I would not. It would still be possible, given enough moisture buildup in or on the plywood to form a conductive path, with heating, arcing or a flashover possible.
Painting the wood won't help either as some paint is at least semiconductive.
edited to fix a missing word..
[This message has been edited by mxslick (edited 07-15-2006).]
