thewellguy
Electrical
- Nov 11, 2005
- 163
I was working in northern Indiana and ran across a power supply that I had never seen before. Its a 3 phase 480 system across the legs, but leg to ground it measures 390, 360, and 140. I thought they had a power problem but a local electrician said thats a normal supply for the area. My question is 2 part. 1) how is this system created and 2) can I safely put a vfd on it. Thanks for you help.