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Measuring Electric usage, small meters, Etc?

Rob Blair
Rob Blair Member Posts: 227
Do they make a small meter that you plug an appliance into to measure electric usage?



  • Kill-A-Watt

    Is a small plug in wattmeter that also measures voltage, current, KWH, elapsed time, frequency and power factor. I have two of them and they work great.

    I bought mine on Ebay new for about $25 including shipping. Amazon also sells them.
  • Andrew Hagen_2
    Andrew Hagen_2 Member Posts: 236

    This is on my wish list

    The Energy Detective
  • Uni R_2
    Uni R_2 Member Posts: 589


    The pro and better versions will interface and log data on your PC for you.
  • Rob Blair
    Rob Blair Member Posts: 227

    But does it do cumulative. If I left it plugged in for a month would it total all the watts used for a month?
  • Yes

    It measures consumption cumulatively in KWH for as long as it is plugged in, and power is not interrupted. For example, a 100W light bulb plugged in for 10 hours will register 1.00 KWH at the end of the period.
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