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POWER CALCULATION

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by dote 1 view

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How and what formula can be used to calculate the power requirements for PCs in order to effectively choose a suitable UPS.The UPS power reading displayed differs from what it should be using P=IV where I is given behind the machines. With this I would require over 20KV for about 20 PCs which currently give a total power of about 3.5KW - 4KW on my UPS presently.

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by isys

A 200 watt computer power supply will draw about 7 amps, times 115 volts equals 800 watts. Your monitor should draw abpit 250, or about 1000 watts for both. But keep in mind, this is 1000 watts PER HOUR! How long do you want them to run on the UPS? If you have 20 PCs and want them to run an hour, 20 KW is right. But if you want them to have time enough to gracefully shut down, ten percent of that (six minutes, 2 KW) would be sufficient.

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