Given power info on a CRT monitor, how can I calculate power consumption (kWh)?

Posted by r0ca on Super User See other posts from Super User or by r0ca
Published on 2010-04-07T16:26:14Z Indexed on 2010/04/07 17:53 UTC
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I have a Dell CRT Screen and the only info I have is this:

AC input
voltage: 90 to 264 VAC
frequency: 50 or 60 Hz + 3Hz
current: 1.5A max. (RMS) at 120 VAC; or 0.8A max. (RMS) at 220 VAC

How can I calculate the energy consumption in Watt-hours for an hour (or better, a day)?

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