Originally Posted by AntiStupid
US outlets are ~110V@60Hz unless it's for your utilities. Your Kill-a-watt is borked. Pulling 1700 Watts from a standard plug would almost certainly trip your circuit breaker, especially GFCI
Older wiring from 60-100 amp service typically can handle 15amps, while newer stuff is more commonly found at about 20A. So even if it was truely 1700watts it may/may not trip.
As for a gfci, they're designed to trip when theres a discrepancy in the loads. However many stand alone gfci's also include a circuit breaker/fuse.
I'm not sure on the kill-a-wat, however if its just pulling the amps and multiplying by the volts, it could be doubled thinking its 240 when its really only 120.
So 1700/2 = 850watts
Factor in psu efficency at about .8 and your actual system draw could be closer to 680 watts. This could change depending on the actual efficency, pfc , age of the power supply, and how the kill-a-watt is measuring the amperage (resistive vs capacitive).
edit: almost used pfc and psu efficency interchangably.Edited by Servos - 7/20/13 at 11:48pm