how to ground rpc panel
I just finished,well 95% finished my RPC, I put all my components on a plywood board, (I know totally redneck) I was wondering how and where I would put the ground coming in from my 220 power?
Well, if you wanna stand by the 'totally redneck' description, get a 3" drywall screw and ground it down good and solid to that plywood, and you'll be downright one-tooth shirtless in cutoff overalls! :-P
The ground coming from your 220v power cord should be connected to all the metallic housings of everything, including the metal framework of the machine you're powering. Typically, it'd be going to the case of your RPC electrical box, and to the RPC's idler motor ground lug, and finally, to the ground terminal of the 3-phase receptacle.
Dave is correct! However if for any reason you need 120VAC for anything Don't use the ground. Neutral must be a separate insulated wire (normally white).