tacomafc
Senior Member
- Location
- Long Island New York
I need to size wires and conduits for a project. I'm adding a VFD for a 100 hp 3phase 480v motor. I'm using the same motor start but I'm going to add the vfd next to it and just splice the load side of the VFD in the starter. My question is wire sizing.
250awg x .3970x6=2.382
6awg x .0507x1=.0507
Total = 2.4327 cu in
Emt = 3"
250 awg = 290 amps x 70%=208A
Would this be correct?
So you won't be confused I'm not mixing line and load. The fuses are in the starter. I'm just adding a VFD. Six wires plus a ground.
250awg x .3970x6=2.382
6awg x .0507x1=.0507
Total = 2.4327 cu in
Emt = 3"
250 awg = 290 amps x 70%=208A
Would this be correct?
So you won't be confused I'm not mixing line and load. The fuses are in the starter. I'm just adding a VFD. Six wires plus a ground.