I would really like to buy 4 more and put all 6 antminers in my room but I don't think the electric circuit in my room can handle it. Most household room circuits are about 15 amps right? ...and I think that only supports about 3 antminers safely. I could put more in the washer/dryer room since it has a 50 amp circuit but I think the heat output of the miners could be problematic during this upcoming summer since there is no ventilation in that area, in terms of personal comfort for the rest of the apartment. If the miners do not give off as much heat as expected, I may go ahead and order 4 more and place them in the washer room since I don't have a washer/dryer there anyways.
Household outlets are usually shared throughout several rooms. In the US, the sockets are 120V and consolidate back to 15A circuits in the panel. Kitchen appliances and other large appliances usually go back to two 20A circuits. Also, you can't max out a breaker, code only allows 80 % of its rated load.
To calculate how many amp's you could pull: amps = watts/volts. So, 8.3A = (1000W power supply / 120V wall socket). Note that I said, "could pull", most of the time you're not going to use the entire wattage on a power supply, but the potential is here.
General rule of thumb:
15A = 1440 watts (80% max load)
20A = 1920 watts (80% max load)
Be careful that your panel is up to code, there's known issues with certain panels not tripping breakers and overloading current in wires or using aluminum wiring. This is usually how house fires start with "wiring problems" when the wrong gauge is used, etc.
I'm by no means an electrician either, just picked up the knowledge over the years by tradesmen.
