Mike134 wrote:
short course about motors.
When starting they initially draw up to 6 times the running current for a brief second then come up to full speed and drops to the running current. That is to much for a small generator so the motor doesn't start. The $300 soft starter slowly speeds the motor up allowing a small generator to carry the load.
The $15 capacitor does nothing in this application.
Getting just a wee bit technical ... a "soft starter" temporarily switches a current limiting resistor inline (series) with the motor windings. It then removes the resistor after a few seconds
(deluxe models may monitor the current and keep the resistor in the circuit until the current drops below a certain value).