I can't remember when or where I saw it (seems to happen more and more) but I think it was either Popular Mechanics or FWW there was a design for using CT's to turn on your DC when you turned on a tool. I have been digging around and can't find it, does anybody out there have any ideas? It is a nice clean solution especially if you run your shop of a sub panel because it only requires two ct's for single phase and three for three phase, I can't remember if the original design had a delay timer for the shutdown but that would be a nice feature to have too.
Chris