Call me ignorant. I have a contractor that has a generator120v/240v, 3phase, 60 amp output. What he wants is to feed a 200 amp main breaker to only power a few lights while men complete the modular trailers. The panel has (2) 2 pole 60 amp breakers that we could back feed one of them and disconnect all loads except lights and maybe a receptacle. The guy buys a number 1 wire. Won't fit 60 amp and I explained why he can't hook up the way he thought, and that we can only use the 2 pole 60s. He argued and I told him find a different electrician to do it.