KBElectric
Member
- Location
- Central Ohio
My situation is this. I have 480Y/277 3-ph primary. I need 240 Delta w/ lighting tap for secondary(3-ph). I have the correct transformer rated at 75 kva. I am using a 200 amp, 3-ph MB panel. I have the 480 on H1,H2,H3 and ground to case. X1,X2,X3 go to the breaker lugs in the panel with X3 being the "wild" leg. My question is, where does X4 go in the panel? This is my largest transformer I've installed. I usually deal with 3kva-6kva. I understand the principles, just not the application of them. Thanks for the help.