# Estimate electic usage

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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wrote:

Depends on the cooker's wattage, i.e if it is a 2Kw cooker in simple terms you would have used 2000 divided by 3 (2 Kilowatt hours divided by 20 mins) = 667watts
Don.
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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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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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Try this website.
http://www.energyfirst.org/Runningcosts.htm
Mark

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