All servers on my rack have hot spare PSU, the circuit is 20amps and 2400 watts max. lets say we load 80% of total watts which is 1920 watts. Do I have to calculate the hot spare as part of total power consumption? Does spare psu consume power when it is standing by?
Example. one of my server gets 2 x 750w PSU, so the total power consumption is 1500w on the circuit?