If the centrifugal switch does not open at 70 to 80 percent of synchronous speed of motor, it would result in

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The centrifugal switch in a motor is designed to disconnect the starting winding from the circuit once the motor reaches 70 to 80 percent of its synchronous speed. If the switch fails to open, the starting winding remains in the circuit, which is not designed for continuous operation and can overheat, leading to damage.

If the Centrifugal Switch Does Not Open at 70 to 80