That circuit is overloaded, since it may have other [larger] appliances on it as well.
If it's that serious, you may need a dedicated circuit for your mining configuration.
FYI: water cooling will only add to the watts consumed.
Edit: depending on the age of your house and the wiring, you may want to have an electrician inspect the wiring and test those circuits for you. Typically you shouldn't be tripping the circuits in a modern house unless you have a very large farm there.
You can trip them easily as the are normaly calculated with a 0.5 coincidence ratio. Also every outlet is calculated for only 100w, unless exceptions like the one going into a kitchen, for example. A simple rule of thumb is that every five outlets, you put four for 100w and the fifth for 400w. This would make a 10 outlet circuit be rated for only 800w ((8*100w+2*400w)*0.5).
Ps: must suck to calculate amperage in the US, as you have to divide that wattage by the 110v and not the 220v that pretty much everyone else uses