Mud
Diamond
- Joined
- May 20, 2002
- Location
- South Central PA
I'm installing a turning center that draws 90A 480V 3ph. I have 240V service, and I have purchased a 112.5 KVA 480/240 transformer. I'm thinking I could feed the transformer with the max of 250A in order to draw more than the 90A from it if I need to run other 480V devices in the future. To do that, do I feed it with a 250A breaker, or does the breaker need to be higher capacity than that to meet the 80% of max capacity figure? Are my numbers right on the input current?
What size wire do I need here? it will run part way in conduit, and part way in an attic, both to the transformer and to the machine. The transformer is on a concrete pad outside the shop. Is PVC conduit acceptable, or should it be metal conduit?
What size wire do I need here? it will run part way in conduit, and part way in an attic, both to the transformer and to the machine. The transformer is on a concrete pad outside the shop. Is PVC conduit acceptable, or should it be metal conduit?