Wait what kind of house you got? I got 3 ZeusMiner Hurricane X3 and 14 ZeusMiner Blizzards and 6 gridseed mini's -75setup in two separate rooms. Each room has its own circuit. Total 70-75 Mh/s...about 2200 watts. As long as you stay below 1600 watts per circuit you will be right...But does anybody know the max power that can come out of a house in the USA?
I want to throw in 4 Antminer S3's into the mix...
My electric bill is about $100 extra a month with all the stuff.
It depends on the house. Older homes will have less power, 100 amps or less. Newer homes can have a lot more. I'd be very careful if you live in an older home. The wiring using back in the good old days (especially in the 60s and 70s when there was a copper shortage) may be a little sketchy. BTW, it's not uncommon in the US where multiple bedrooms share a single circuit, so don't assume each room has a dedicated circuit.