Quote Originally Posted by klondike_bar
it depends on the boards. if in a metal box, make SURE that the board does not make any metal to metal contact. some boards should be safe, but some will probably have big sodder points just screaming to short it in a metal box
Dude they're MADE for putting BALLASTS inside them. They have the appropriate design, obviously.

Regardless One should never use anything plastic like a toolbox like someone was saying. That's a Grade-A way to burn your hous down.