Single phase motor controller
Single phase motor controller
(OP)
Would to know the right capacitance rating for a 230v 5hp 21amp motor. I have a controller that too many hands have been in and think the capacitors are sized wrong. I have two 15uf run and two 850mfd start capacitors with no relay on the circuit.





RE: Single phase motor controller
RE: Single phase motor controller
and yes,,they must be switched out somehow.....is it a series -parallel start machine???
have you anymore details.
RE: Single phase motor controller
Odds are the "relay" is a centrifugal switch in the motor!
Is this a control box for a pump?
What is the motor doing that makes you think the caps are wrong?
Specs on the motor and application would be nice too!