I'm using 3 power supplies to power a A3 using 120v power. The miner takes almost 1500 watts using a watt meter.
What? No. I'm using 1 APW3++ using 120v. No issue at all. Consuming ~1,200 Watts
I have a meter on mine too on 120 V, and its 1400 Watts at the wall!
I have also had 5 s9 antminers drawing 1525 watts on 120 volt the same way for over a month.. on the same PSU's APW3++