ceb58
Senior Member
- Location
- Raeford, NC
Have been ask to connect a 60 Kw 3 phase military generator to a rural fire department building with a manual transfer switch. The name plate has it at 208 amps at 120/208v. I will be connecting it single phase since the building is 120/240 v 1 ph. My question is because I am using only 2 of the phases, that beats out to 138 amps. So do I size the wire and over current to that or will I have to size per the name plate even though I am not using all 3 phases? The generator doesn't have OC protection so I know I will have to size the wire at 115% to the disconnect per 445.13. So by this my conductors from the generator to the disco. would have to be 2/0 with 160 amps fuses. Or am I going to have to size 115% of the name plate 208 amps?