Re: use of wood in an enclosure
This is more of a listing issue per 110.3(B), however the plywood is flammable, and can mildew. Its not a professional installation, I have installed and looked at a lot of control panels, plywood is not used.
Is this required to be a listed control panel, perhaps a UL 508 Industrial Control Panel? Ths AHJ can reject this or accept it, however. But to me the lighting contactors won't be securely fastened into the wood. Also see what the listing instructions for the contactors require for mounting. There may need to be heat dissapation and the wood can't provide it.