Run capacitor questiom

Discussion in 'General Electronics Chat' started by rgbraun1, Mar 8, 2015.

  1. rgbraun1

    Thread Starter New Member

    Mar 8, 2015
    1
    0
    replacing a run capacitor. Old one reads 370v 5.0 mfd +-10%. I can't find any with the +-10% to replace it.
    Does the % matter?

    This is going on a heater for a hot tub.
    Thanks,
    Gabe
     
  2. KLillie

    Member

    May 31, 2014
    126
    14
  3. Arx&Sparx

    New Member

    Feb 19, 2015
    11
    3
    The tolerance does matter. If you are able to find a tolerance that is 10% +/- or lower (i.e, 5% +/-), the cap will work, however, keep in mind that if the tolerance is exceeded, this could effect the motor in a bad way. If you go below the tolerance, the motor windings have the potential to draw too much current. If you go above the tolerance, the motor windings will not receive enough current. Obviously, sticking with the same specs as original is always the safest bet, but be sure not to exceed the voltage limits and original tolerance level of the original capacitor.
     
    DickCappels likes this.
  4. Arx&Sparx

    New Member

    Feb 19, 2015
    11
    3
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