Thinking about a 4x8 CNC router with a vacuum table. I'm somewhat limited on electricity and notice that a lot of units are 12-20 hp for the vacuum pump, and three phase. So given I'd have to use even more amps to convert to three phase... how big of a vacuum pump is really necessary to hold a piece of sheet goods down on the table sucking thru the spoil board?
I see pumps from 5hp and up, so what's the consensus of opinion?