1) How many S9 miners can we run with 150KVA transformer, 400A 3Phase, 208v? Please post your calculation formulae, I want to see how far my math and education is off.
2) We have (30) 2pole 20A breakers planned to feed 5 shelves with 60 S'9s and 10 L3"s
3) What is the best UL certified PDU option for rows of 10 miners?
4) Who has the best pricing on industrial shelving and what vendors?
With 400A of 208v, you can run 80 S9 13.5, should be able to load panel with 40 breakers, than on a few of them just run 1 S9 and 2 L3. Obviously just watch the panel when loading up, transformer with poor harmonics will tend to draw lower voltage increasing amperage.