I have 2 EP600'S, 5 channels of krell class A power that doubles down to 4ohm @500w, and 2 channels that double down to 2ohm @1200w.
All of this is on a single 15A breaker.. The HT has never tripper the breaker. The real world power draw is much less than people assume..
I totally agree, the idea and worry about power overload in A/V systems is highly overblown. For three years now I have been running a 9.2 system currently consisting of a Yamaha Pre-Pro, 2 Outlaw multi-channel power amps at 125 watts/ch(all equally driven)and FOUR subs ALL running on a normal 15 amp circuit. A friend of mine who is an electrician measured the draw and even cranked up to the maximum listening levels, I would be drawing maybe 5 amps at most on the circuit not worth the extra 250 bucks for a dedicated circuit that I once considered installing that really, in the end, was not required.