Wednesday, January 2, 2008
An Energy Meter in Action
Here it is in action, measuring how much electricity a toaster oven uses. 1400 watts is 100 times as much as a florescent bulb uses, and about half as much as a small electric dryer.
A toaster uses lots of energy but for a very short time. Press the red button on the right side of the Kill-a-Watt meter and it tells you how much energy the toasting of toast took--a grand 0.05 kilowatt hours. That's about one penny's worth of energy--about the same as having a 50 watt light bulb on for an hour.
Obviously, toasters are not toasting the planet, but check other appliances and you're sure to find some unnecessary drains on energy. The device is particularly good for finding and measuring the energy used by electronics even when they are off.