General purpose AC motors, also known as induction motors, are electric motors that convert AC power into torque (where torque is the measure of a rotational or twisting force) to drive mechanical loads. They are suitable for powering pumps, blowers, conveyors, and machine tools. Split-phase NEMA frame general purpose AC motors are lower efficiency and have a lower starting torque for a softer startup compared to other AC motors. Capacitor-start NEMA frame general purpose AC motors use a capacitor to provide additional power during startup for higher torque. Capacitor-start/run NEMA frame general purpose AC motors are single-phase motors that use a capacitor to provide additional power during startup for higher torque and a separate capacitor to run with higher operating efficiency. Three phase NEMA frame general purpose AC motors and three phase IEC metric motors operate on efficient three phase power with high torque and don’t require start or run capacitors.