Quote from: TyrTheAlpha on August 28, 2014, 07:12:00 PM

Does anyone know how much of an efficiency variance with 240 over 120volts?

anywhere from 1 to 5%. depends on the quality of PSUs.

also you arent going to have enough cooling with wall A/C units for 200 S3's. at a min of 330w each thats 66000 watts or 66kw. that's equivalent to 225000 BTU/hr. thats 15 - 25 wall/window units in order to counteract that heat generated. plus an additional 20000 watts to power those. and i dont even know if the window units would work properly for this large of an operation.

if you are doing a warehouse you should use large fans blowing out mounted on one side of the building and create negative pressure.