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Old 12-07-2009, 05:38 PM   #16
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Horsepower Question


If I added a larger starting capacitor, would it help reduce the starting amps and if so how much larger can I go. My original question was about a 5 horse motor, but this question is about a 1 horse. Code letter is K. so 8-8.99 kva

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Old 12-07-2009, 05:52 PM   #17
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Horsepower Question


The starting capacitor on a motor is 'tuned' to the start and run windings.

Its purpose is to cause a phase shift in the start winding so it is a bit different than the run winding. This can be done mechanically, as in a split-phase motor. An electrically induced phase shift is far more effective, and results in less current and more torque.

The capacitor installed at the factory will give the least current along with the most torque. Any change will cause more current and less torque.

Rob

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