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    DigitalOak's Avatar
    DigitalOak Posts: 2, Reputation: 1
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    #1

    Sep 6, 2009, 01:03 PM
    How to measure amps on 240 circuit
    Using an Ideal 600 AAC Clamp Meter at the breaker box, do I measure both leads from the box and add them to learn the amps the motor is using? Each lead says 4.5 amps, so motor uses 9 amps? (The motor says 6.3 amps at 230 volts, but we have 240.)
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #2

    Sep 6, 2009, 01:09 PM

    4.5 Amps is your load at 240 volts. If each leg is NOT drawing the same, 1 side is leaking to ground or 120 volt devices and a neutral will be present.
    With No neutral, both legs should draw the same.
    DigitalOak's Avatar
    DigitalOak Posts: 2, Reputation: 1
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    #3

    Sep 6, 2009, 01:42 PM
    Thank you for your answer. Much appreciated.
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #4

    Sep 6, 2009, 01:56 PM

    Your 6.3 A is likely FLA or Full Load Amps. Motors will draw a current depending on load.
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