This interests me as well. I have an Antminer too & I let it collect dust(not in the good way) for 2 months assuming that when I moved my new house would have a 220v in the garage or something. It didn't, still doesn't as the cost to run one was far greater than just buying a EVGA 1300 G2 to run off 120 for the time being.
Now I'm looking at running another 2-3 miners, possibly 6(in my dreams) one day & to be honest I'll probably just move & find a place that already has some of what I want already done.
Obviously I'm not going to find a house prewired with a bunch of 10AWG to the basement, but an extra 220v or 2 would be a start. That being said & not to hijack your thread here but it is better to run 220v server PSUs than a bunch of say 1300 or 1600watt EVGAs? It's the kind of problem I'm ok with having, it could be worse, but I too would like to know what people with multiple 4-10 rigs/miners are doing for power.

There's got to be a limit. Some would be due to their power company bumping them up a tier but aside from that if I wanted to run 20+ rigs it'd probably make more sense to lease a building specifically for mining.