Let me suggest that you use these instead.I think this is the block: http://www.idealind.com/products/wi...s/terminal_blocks_intermediate_heavy_duty.jsp
I can't find a link to the box, sorry. It's just a regular blue plastic box the guy at my local electrical supply store had.
They are fully insulated. All you have to do is tighten them with an Allen wrench. They are Polaris IT connectors and you can buy them at any good electrical supply house. You are unlikely to find them at a hardware or box store.