Easy to run S9 on standard 110 outlet, but very important to consult an electrician friend to confirm it’s safe to use an outlet 24/7.
I did my own wiring to run s19s and melted some adapters. After having electrician set it up I had no problems, just had to manage ventilation.
Kaboom racks sells good s9’s in my experience, it’s a bit annoying they come pre-installed w braiins tho since that donates hash to the dev fee.
I used the S9’s in winter to help heat my rental, it was a lifesaver.
FYI I have an s19 XP 141 I need to sell, 1 month of usage, if anyone’s interested.