LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
Hey, all. I'm doing another residential 17kw generator install, and have a couple of feeder questions.
I will be running the feeder from the genny into the crawl space for about 25' and back out at the ATS.
Genny power terminals are rated for 75 degrees using copper or aluminum conductors.
The genny had a 70a breaker, so I am deciding on the most economical wiring method. Choices are:
1. One FNMC with #4 cu conductors and the six control wires
2. #2 al SER cable, six control wires in separate 1/2" FNMC
3. Does #4-3 cu NM cable exist? I'd need W-rated outside
I will be running the feeder from the genny into the crawl space for about 25' and back out at the ATS.
Genny power terminals are rated for 75 degrees using copper or aluminum conductors.
The genny had a 70a breaker, so I am deciding on the most economical wiring method. Choices are:
1. One FNMC with #4 cu conductors and the six control wires
2. #2 al SER cable, six control wires in separate 1/2" FNMC
3. Does #4-3 cu NM cable exist? I'd need W-rated outside