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Device to calculate power

  1. Feb 16, 2009 #1

    can anyone help with advice on what basic device can i use to calulate power usage?
    the implementation im looking at is follows

    mains socket -- device -- appliance

    its much like the product -> http://www.p3international.com/products/special/P4400/P4400-CE.html except i want to do away with the LCD and strip it to the bare minimum to basically reduce cost..

    is there a basic device i can use? if im not wrong, the device measures current and uses P = VI to convert to wattage.

    thanks in advance
  2. jcsd
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