mtminer, how much amperage are you pulling, and did you run new circuits to accommodate it? Or is that in some sort of office space that already has plenty of available amperage?
When I moved in there last year I lucked out and where a bunch of 20 amp 240 plugs but the rig outgrew that so recently putting in 4 30amp and 1 20amp 240 runs to clean up things as the extension cords where getting bit out of hand.
Currently the rig is pulling ~80 amps for everything.