Any electricians available? Wire size question...

Bill Crowell said

I'm sorry, DesertRat, but I don't think 4 gauge wire is nearly large enough for a 100-amp current draw over the distance involved.

Click to expand...

You are correct. #2 would be more suitable, Cu=115A @ 75C, #2 Al=90A @ 75C. I would run #2 CU for myself. Good catch--------:)
Our L & I inspectors rate the connectors @ 75C so calcs @ 90C fail inspection for us.