Reply by Dan Lyke

Might be worth springing for a copy of the ANSI/UL 153, “Portable Electric Luminaires” standard, but in a quick web search it appears to me (and I haven’t verified this with a visit to the store) that you can buy a UL approved assembly which has the socket to the plug. At that point the only thing you’re worried about is lamp shade clearance.

I’ve tried a quick Google search of the FTC.gov web site looking to see what standards they’ve got, but I suspect that if you use the best plug/socket assemblies you can get and simply incorporate those into your frame, make sure you have reasonable lampshade clearance, and sell the things with CFLs (which are quite a bit cooler than incandescents), you’ll never have a problem.

-- Dan Lyke, Petaluma California, http://www.flutterby.net/User:DanLyke