see my old posts in this thread. I wrote here about it but nobody wants to hear me. Photos of burnt S5 are in the thread of the picture your mining... only one time fall me internet connection..
I am skeptical about s7 if bitmain no fix this dangerous FAIL. One mistake and you lose 2000usd(miner+psu+tax). If you put them in the data center, you are waiting for nearly a year return on investment.
I saw it. I just never responded to it. I'm going to find out if it fixed it one way or the other fairly soon if no one else does.
I understand him doing this if he already has these on hand and wants to have minimal up front costs. If he plans on adding more rigs in the future, it's best to safely gain access to 240 Volts and purchase "used" server grade PSU's with breakout boards. It's cheaper and able to power more rigs. Yes, gaining access to 240V dedicated circuits may cost a bit in the beginning. Especially, if an electrician is paid instead of doing it yourself. It turns out being cheaper afterwards as more "used" server grade PSU's and PDU's are used to power hardware. Also able to power twice as much hardware than one could with 120 Volts.