Freezer

[fred1949]

I cannot figure out how the calculate the KwH on my 5.5 cubic foot freezer. They have it listed as 1.6 Amps, and using 240 KwH a year. Using the formula I have I cannot come up with that number. Can you tell me how they calculate the KwH for the energy tags they place on appliances?

Thank you,
Fred

[kactuskid]

They first convert the amps to wattss by multiplying 1.6 x 120 volts. This comes out to 192, yes, different than the 240KwH. But there is a power factor that is also added in by the manufacturer, so that's why the math doesn't seem to work. Here's a link that will explain it all and how they come up with the numbers that they do.

http://www.signs.org/Technical/article.cfm?ItemNumber=624

[LazyPup]

The manufacturers rating states the unit uses 240kw/yr

That is 240,000 watts. divided by 365days = 657.53 WH/ a day.

The unit draws 120v @ 1.6a = 192watts/hr

657.53watt/hr divided by 192 watts per hour = 3.42 hours average run time per day.

[fred1949]

Thank you very much for answering my question. I now have a understanding of what goes on those info tags.

Thank you,
fred