Q: How Does Start Capacitor Help Start Motor
A shaded pole electric motor does not use a run or start capacitor.
Shaded pole motors are inefficient.
PSC motors are used extensively in HVAC.
PSC Motors can be replaced with the more efficient variable speed ECM Motor.
Run capacitors help the PSC run more efficiently.
Start capacitors help the motor start.
A potential or current relay takes the start capacitor out of the circuit after the start-up.
Capacitors change the phase angle of the EMF.
Changing the phase angle gives the motor a better boost.
Finally, a 3-phase motor does not use capacitors.
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