This is what I don't get either. I don't understand why people are not using the Bitmain APW3+++ power supplies. Yes you will be hashing a little less (in my case most of 13.5ths batches are hashing around 12.4-12.7 with extremely low hardware errors).

As long as you are not running anything else on that 110v circuit and use proper 14awg cables for the power supply you should not run into problems. I am not an electrician but I do understand that the 14awg wiring on a 15 amp 110v circuit is rated for close to 70 degrees Celsius. I have touched the wires running by my panel and although they are very slightly warm, I have never tripped a breaker. At 100% load a 110v 15amp circuit will be able to push out 1650watts. You're going to be closer to 1400 and although you are not at the recommended 80% maximum for continuous use I am sure you are fine (this is just my opinion).