Posted by: admin | September 23, 2009

IDT Energy Explains Watts, Volts, Amps

IDT Energy wants to know how much energy consumer electronics and household appliances use. The more energy something uses, the more potential savings there is when its use is curbed.

All electrical devices that plug into the wall say right on them how much energy they use. Sometime you need to hunt for a label, or the number is printed right into the plastic or metal. If the item uses an adaptor, then the rating is written on the AC/DC adaptor itself. Watts is the amount, or rate the device uses electricity. The more watts, the more electricity it uses over time. If the energy is written as amps, it is easy to convert the amps to watts by multiplying by the amount of volts being used. In the U.S. the voltage is standard at 120 volts. In most other countries around the world the standard is 220-240volts. If you have a hair dryer that uses 10amps, just multiply by the volts, 120, to get the watts, 1,200. If you were to leave that hair dryer on for one hour, then it would have used 1,200 watt-hours, or more conventionally, 1.2 kilowatt-hours.

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