Washing machine capacitor polarity?

Discussion in 'Technical Corner' started by SkyHog, Dec 16, 2017.

  1. SkyHog

    SkyHog Touchdown! Greaser!

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    fixing a washing machine. Took the capacitor off and neglected to note which way it went back. Any way to tell if this is polarized and if so, which lead goes where? 980FB582-1CBB-438F-84C4-C911158231C3.jpeg 17C94B01-FAB1-4AE7-A30D-17F29F2D1F28.jpeg 2FCD84B2-A52A-4D5E-94FA-4378CC337672.jpeg
     
  2. PaulS

    PaulS Final Approach

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    Pretty sure you don't have to worry about that with those caps.
     
  3. GRG55

    GRG55 En-Route

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    Should be a stripe or a "-" on the lead or the edge of the case aligned with one tab if it is polarized, or you'll find the "+" tab is longer. Motor starter caps usually aren't polarized. If you don't find a marking or tab dimension difference (I couldn't discern any from your photos) you are probably okay connecting it either way.
     
  4. SkyHog

    SkyHog Touchdown! Greaser!

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    If I do it backward can I damage the washer or just destroy the capacitor?
     
  5. GRG55

    GRG55 En-Route

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    Most likely the cap will start smoking.
     
    mscard88 likes this.
  6. weirdjim

    weirdjim En-Route

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    See the specifications on the side where it says "250 volts AC"? Motor capacitors in AC service are almost always nonpolarized. The easy way to get this is to have TWO electrolytic capacitors of TWICE the capacitance you need and run them + to + or - to - inside the case and bring out the two remaining leads. Short answer is put it back in the way it physically works best and don't worry about polarity -- it ain't got none.

    JIm
     
  7. rpadula

    rpadula En-Route

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    So did you let the magic smoke out? :D