M Mike34 Member Location Alabama Feb 2, 2012 #1 I have a 480v feed feeding a 480v, 225a panel (no main) and a 112.5kva step down transformer. A disconnect is next to the panel. The panel has 4, 3-pole circuits for heaters: 70a and (3) 40a. My question is, what size should the disconnect be?
I have a 480v feed feeding a 480v, 225a panel (no main) and a 112.5kva step down transformer. A disconnect is next to the panel. The panel has 4, 3-pole circuits for heaters: 70a and (3) 40a. My question is, what size should the disconnect be?
pete m. Senior Member Location Ohio Feb 2, 2012 #2 Is the disconnect for the transformer or for the 225 amp panel? Pete
