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Author Topic: electrical meausrement  (Read 1594 times)

urgannagru

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electrical meausrement
« on: October 22, 2006, 08:07:33 PM »

im trying to build the financial case for buying a new fridge, but i have no idea exactly how much electricity my current old one uses. is there a way i can measure it easily?


(and no, it doesnt have any of the info listed anywhere in/on the fridge, there is no make/model number anywhere on it... it was here when i moved in and there is no user manual...)
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Excess3

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Re: electrical meausrement
« Reply #1 on: October 22, 2006, 09:48:47 PM »

power (the measurement used to charge your electricity) is found by multiplying the current and the voltage.
So P(t)=I(t)V.  You will need to measure the current over a period of time.. say 2 hours (so that you get a good capture of the duty cycle of your compressor).  Mulitply it by the voltage (should  be 120) and BAM.. you  have your power usage in watt hours (electic company usually goes by KWH).

or take the easy way out and get one of these:
http://www.thinkgeek.com/gadgets/electronic/7657/
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linear

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Re: electrical meausrement
« Reply #2 on: October 23, 2006, 02:25:41 PM »

The kill-a-watt is the way to go. The numbers on the nameplate won't reflect operating conditions.
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urgannagru

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Re: electrical meausrement
« Reply #3 on: October 23, 2006, 02:41:47 PM »

Thanks for the input guys, i think ill have to get one of those. while its not at all expensive, usually TG is overpriced so im going to do some shopping around. I'll keep you guys up to date on how this all works out.
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