My buddy got hit by the hurricane, and he is trying to run an AC window unit. His generator has a 4 prong 220V, but, his AC unit, which is also 220V, has 3 prongs.

He bought the connectors and what not, so he can cut and splice to make it work, but he is unsure of the wiring.

Does anyone have any idea? And, did that post make any sense what so ever?

The 4 prong has two hots a neutral and a ground. The three prong has no ground. What color wires are on the 4 prong?

Black White Green

Green = Ground?
White = Neutral?
Black = Hot?

My bad. He bought a female for the AC to plug into, and a male that will plug into the 4 prong, so, he is building a conversion cable thingy.

He bought the 3 prong wires, and they are White, Green, Black.

white and black are the two hot(110volts each=220volts)
green is neutral.

Thank you sir.

That combo is for 120. 220 would have a red in there and maybe not a green. White will always be neutral. Older three prong 220 circuts did not have a ground. The neutral terminal was grounded to the appliance frame. The following link is for dryers but the connections would be the same.

220v 3 and 4 wiring

-Jeff