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    johncjackson's Avatar
    johncjackson Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Jul 8, 2013, 08:46 AM
    Should capacitor have voltage with power off
    Should a capacitor, for the fan and compressor, have any voltage when checked with a meter, with the power off? Thanks
    hkstroud's Avatar
    hkstroud Posts: 11,929, Reputation: 899
    Home Improvement & Construction Expert
    		  
    #2

    Jul 8, 2013, 09:00 AM
    Yes, momentarily. The process of doing a voltage check discharges the capacitor.
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
    		  
    #3

    Jul 8, 2013, 11:46 AM
    Yes and high voltage too. A capacitor (think capacity) stores electrical energy to help fans and motors get started. You always need to discharge a capacitor before trying to evaluate it's condition.
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