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  • RobertS48 commented on thediylife's instructable Simple Arduino Home Energy Meter1 year ago
    Simple Arduino Home Energy Meter

    Doesn't this actually measure VA not Watts?In an AC circutiVolts * Amps = Volt Amperes = Apparent PowerVolts * Amps * Power Factor = Watts = True Power

    Doesn't this actually measure VA not Watts?Volts * Amps = Volt Amperes = Apparent PowerVolts * Amps * Power Factor = Watts = True PowerSo if you are measuring the power usage of an incandescent light bulb its power measurement might be fairly accurate, but on a computer or TV it will not be.

    Doesn't this actually measure VA (Volt Amperes) not power?Volts X Amps = Volt Amperes = Apparent PowerVolts X Amps X Power Factor = Watts = True Power

    Doesn't this actually measure VA not Watts?Volts * Amps = Volt Amperes = Apparent PowerVolts * Amps * Power Factor = Watts = True Power

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