Capacitor selection

[colin hamiltonParticipant @colinhamilton16803]

Update no 2:

It turns out the capacitor was sealed inside a can. It's actually 20uF so with my 200uF I'm guessing the windings won't last long. I'll get another ordered.

[noel shelleyParticipant @noelshelley55608]

AH ! The bit that shouldn't get hot is the motor ! Noel

[Robert Atkinson 2Participant @robertatkinson2]

As long as the centrifugal switch is working and the motor is not getting hot the bigger capacitor may not be a problem. It is mainly purpose is to provide a phase shift. The current depends on both the capacitor and the winding.
The motor manufacturer will fitt the smallest capacitor possoble to reduce costs. I'd be more concerned if it was a run capacitor.

Robert.

[colin hamiltonParticipant @colinhamilton16803]

Posted by Robert Atkinson 2 on 16/09/2023 13:08:08:

As long as the centrifugal switch is working and the motor is not getting hot the bigger capacitor may not be a problem. It is mainly purpose is to provide a phase shift. The current depends on both the capacitor and the winding.
The motor manufacturer will fitt the smallest capacitor possoble to reduce costs. I'd be more concerned if it was a run capacitor.

Robert.

Sounds good. I may just let it be for a while and see what happens

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