Question

In a single phase capacitor start capacitor run motor the starting capacitor should be approximately ___________ times larger than the run capacitor

Answer 1

The starting capacitor in a single-phase capacitor start capacitor run motor is usually 2 to 3 times larger than the run capacitor to ensure a larger phase shift and high starting torque.

Step-by-step explanation:

In a single-phase capacitor start capacitor run motor, the starting capacitor is typically much larger than the run capacitor. While the exact size ratio can vary based on the motor design, it is common for the starting capacitor to be approximately 2 to 3 times larger than the run capacitor. This is because the starting capacitor is needed to create a larger phase shift to start the motor with high torque, while the run capacitor is smaller and designed to optimize motor efficiency once it is running.