Why does everyone over think and try to over-engineer..
It is SOOOOOOO SIMPLE cheap and effective to just do this...
And All 8x S9's Running just fine...Mission accomplished
NOTICE NO PDU NO PLUGS..3x PSU's are connected straight to 220V 30amp line using bare wire and marrets & electric tape.



You built a death trap.
But it is cheaper and it does work.