Individuals less familiar with strong electricity, how to computer room equipment total power consumption and voltage (single-phase power), to configure the number of air switches A and lightning fuse

This is simple, count how many devices, the power of each device is how big, total. The total power value divided by the voltage 220, is the current value, and then multiplied by a wealth factor such as 1.3-1.5, the result is the need to configure the number of A of the air switch, lightning fuse current value, is the number of your air switch divided by 1.6 to round.