Measuring the power consumption of devices from the faceplate PDF Print E-mail


A quick and common approach to determining the power requirements for IT equipment and other electronic devices in the office is to Sum up the faceplate power ratings.

The bulk of devices will be stamped with a faceplate (sometimes a label made from metal, plastic or just sticky paper) which will detail some of the electrical characteristics of the device. If a wattage is not stated on the plate, it can be determined by multiplying the current (amps) by the voltage (volts) of the device to determine the number of Watts the device / appliance will draw per second. This number can then be Divided by 1000 to establish the number of Kilowatt (kW)s drawn.

But beware, this number may not bare too much resemblance to the actual power consumed when the device is being used!