That's why I said my spondoolies hosted miners hash at 1.4T because they are on 208v. But here in America, it is common to run off of 120v. Now, everything is fine if I run it all in the datacenter, but what if the hosting fee becomes too much based on BTC prices and I just want to take them back and put them in some back room at the office? As in it makes a small margin of profit running them myself without hosting, but pay hosting fees wouldn't be profit anymore at that point. Maybe everyone else doesn't think this way or have this concern...
My datacenter's hosting fees are probably comparable to or lower than your electricity prices. We'll be using >= 208V. We won't be ready to host for another two weeks, though.
In the SP10 firmware, there's an option to ignore or modify the power limit when running on 115V. You should only do this if you have a thicker-than-normal cable between the PSU and the wall (12 awg preferred, but 14 awg might be okay too).