I currently have 3 S9s and i plan on getting up to 12 total. I have an electrician coming on monday and this is the setup i THINK i am going with. Let me know if you see any issues.
He will run a 100A sub panel to the mining cave. This will have 4 30A 240V breakers. Each breaker will have 2 duplex outlets connected to it. I plan on getting these:
https://www.amazon.com/dp/B000U39UY4/So at 240v (i think here in the USA it would be 240V) each antminer will be 5.833A, so I can have 4 per 30A breaker and stay under 80% load, but will only use 3 per breaker since I max out at 12. I will use these cords:
https://www.pduwhips.com/products/2121-computer-power-cords.aspxSo 80% of the 100A sub panel will allow 13 S9s, however with the exhaust fan, network equpment I would put a max of 12 in there.
Does this sound like it will work?