Ours is supposed to have 220v to one of the pumps, but it doesn't. 220v 30a is a LOT. That's equivalent to a 60a 110v outlet. The whole point, in our case, of having the house pump on 220 is so that it will draw less amps. It's currently a 20a 110v wiring which overloads the circuit, when what it needs is a 220V 15a dedicated and we'd never have any problems.
I also *should* be able to decide which pump I want to run. I could run just the well pump and first stage RO equipmeent to fill the tank, and then the house pump and second stage to go from the tank to the house.
Either way, it's a good thing to think about re: the generator sizing. Especially if I ever get around to what I really want which is a burried propane tank, a whole-house backup generator, and an automatic transfer switch.