# Estimate electic usage

• posted on February 5, 2006, 1:11 pm

Anyone know of a simple formula to calculate what the electic usage of an domestic appliance. Our cooker is electric and if it is set to 180c for example how do you calculate how much electricity it uses say for 20min.
Pat
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• posted on February 5, 2006, 3:13 pm
wrote:

terms you would have used 2000 divided by 3 (2 Kilowatt hours divided by 20 mins) = 667watts
Don.
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• posted on February 5, 2006, 3:47 pm
or
turn off all appliances except the cooker and take a meter reading. Run your cooker for 20 mins turn off and take another meter reading.
Dave ps Don't forget to turn everything back on again.

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• posted on February 5, 2006, 4:18 pm

The problem you've got with an oven is the thermostatic control. The first few minutes, getting up to temp, will consume a lot more than subsequent minutes.
--
Martin

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• posted on February 9, 2006, 9:15 am
Try this website.
http://www.energyfirst.org/Runningcosts.htm
Mark