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Fitting a run capacitor larger than the machine requires will

  • A.overheat the auxiliary winding
  • B.improve the starting torque without any penalty at all
  • C.have no effect whatever on the machine's behaviour
  • D.reduce the current the machine draws from the supply

Answer: A

Correct answer: overheat the auxiliary winding

The auxiliary winding is wound with fine wire and sized for the current the correct capacitor passes. A larger capacitance passes more current through it continuously, and the winding overheats and eventually fails. Fitting the nameplate value is a requirement rather than a starting point.

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