6 minutes ago, STEAL7HY said:
The circuit breaker in the house.
Okay - so what else is on that breaker? Easiest way to test this is to shut off the breaker and see which outlets don't work.
On top of that, you're basically going over the breaker Amp limit (Assuming standard NA circuit, 120V w/ 15A breaker). Grab an electrical meter (something like a Kill-A-Watt meter - cheap on Amazon) and measure the output of the server (and all accessories - if you use a powerbar, plug the powerbar into the meter). Find out how many Watts it's drawing (and note Volts and Amps too)
Then, measure all other devices on the circuit and add it all up. If the total draw is under 1300-1500W, you're fine - if it's spiking over 1500W, you're just overloading the circuit (though depending on the specific voltage your circuit outputs - 15A could be as high as 1875W, assuming 125V).
If your total amps are well under 15A, then there's likely an electrical issue with your circuit - a short or something else perhaps.