Refrigator electrical usage


Old 09-11-11, 06:58 AM
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Refrigator electrical usage

Have been monitoring electrical use of my refrigator. Over a 41 hour period it averages out to 91 watts an hour. Even when running it only goes to around 150 watts. When you open the door it also climbs to around 130. Am I correct that probably the biggest usage is during defrost cycle? I am considering a generator for emergency use and trying to figure out what the most watts it uses. Its much less than I though or am I missing something??

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Old 09-11-11, 07:04 AM
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I would size it to the specs on the refrigerator or in the manual. I believe those specs reflect peak usage. You are probably right about the defrost cycle unless you have an ice maker. It turns out the ice makers use a lot more electricity than the refrigerator does.
Old 09-11-11, 07:22 AM
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While that usage may be an average you need a generator startup current when the compressor kicks in. This can be several times the actual running current.

There are generator sizing spreadsheets available from some of the generator makers.

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