I'm with the other fellas. I was nervous to try and mine on 110v since I've personally experienced some tragedy at the hands of doing so. When I read that the bitmain PSU wouldn't run a single S9 on 110v I knew I had to find a way to make 220v work even though the only 220v connection I have at my place is the dryer. So I found a lovely PDU which runs off of my dryer connection allowing me to run all 4 S9's off the single PDU connection. This runs right around 24 amps on a 30 amp circuit and it's been running for over 40 days without any issues. I actually wired a 25 foot extension cord to run from my laundry room inside to the garage and removed the deadbolt on the garage door and wired the extension through the deadbolt hole so my garage door can remain fully shut, the miners are in the garage enjoying the cool winter air and my wife doesn't want to murder me from all the noise/heat/cold/whatever that exists in the garage. It's been a win win and I highly recommend finding a way to get on 220v. I will never consider mining on 110v again, but that is just my opinion.

I've been mining on Kano since Jan 21st with a single S9, but my shift graph seems to have maxed out at 8.9, I thought the ramp was a couple of weeks?  I'm sure I'm missing something, but if the ramp time depends on us finding a block, then it was a bad time to switch...