There could be various explanations for a single-phase motor failing to start, becoming hot, tripping its overcurrent device, or running intermittently. The primary issue could sometimes be found in the power supply, such as the motor controller or branch circuit wire. Other causes could be a driven load jamming or in its thermal switch, centrifugal switch, or capacitor. Also, a burned wire or winding failure, such as a deteriorated bearing or insulation degeneration, could cause issues. They are usually replaced if the motor is more than ten years old and has less than one horsepower. (2)