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    Vacuum: Power Factor

    Andres Collazo Olmos

    Background: Power factor is the amount of usable energy a device can use. The "perfect" PF is of 1.00, but is only achieved when the device releases heat besides the actual purpose of the use.

    • A Watt is the real power
    • An Ampere is the apparent power.
    • Volts x Amps = VA= Watts
    • When kW=kVA then the PF=1.00. This is when heat is released.
    • When kW<kVA then the PF<1.00. This involves motor like devices.
    The device that will be used to look at the PF is the Kill-A-Watt.
    Plug in the Kill-A-Watt and then plug in the vacuum in the device.

    Turn the vacuum on and check the following information.
    • Volts
    • Amperes

    Answer this questions:

    1. How many Watts is the vacuum using?
    2. How much does it cost the power the vacuum is using? To measure the cost use $.50 x kW.
    3. What would be the VA if the PF were to be of .50?
    4. Why are kVA and kW not the same?