The H4 uses a supply with a max power draw of 300W. We do not draw 300W. The RH4 and FB4 both use supplies with a max power draw of 500W. We do not draw 500W.
Thanks guys. We did a test the other day and the Hog 4 was drawing 110w. I'm going to allow 150w per console, plus two DPs, and I have an 850w UPS so all is good.