The 1.2T miners that AMT sells come with 1500W power supplies. It's pretty much common sense. Like I said, a 20amp dedicated circuit will do fine.
Now, if you plug and air conditioner, a hair dryer and plasma TV and sump pumps on that same 20amp circuit, you will overload it since a 20a would take up to 2000W for sure. I Thought that was obvious, but I will state it here so you know.
1 1.2T miner draws about 10 amps. You should only put 1 miner per 20 am circuit.
if you are want to run multiple per circuit you should run 208 30 amp. You could run 3 miners. ** Check with you electrician.
30 Amp circuit will not work because of the plug. Most plugs (wall sockets) are 15 Amps and the ones with the little 90 degree T on one side are 20 Amps.
So the best way to do it is like this:
(1) 20 AMP Breaker, (1) 20 Amp Plug (wall socket) per machine. Each AMT will draw 10 to 12 AMPs. That is to say, you will only be using 12 Amps of a 20 Amp circuit/plug. This way you never have to worry about blowing circuits etc. You're electrical is now bulletproof. Building it right from the start will save you time and headaches in the future.
****No I'm not an electrician
Will probably soon move my lil' pharm to out our shop where its only 7-cents...