How can you determine the direction of rotation for a three-phase motor?

Determining the direction of rotation for a three-phase motor is accomplished by altering the phase sequence of the supply lines. When you swap any two of the three motor supply lines, you effectively change the order of the phases, which reverses the magnetic field produced by the windings in the motor. This shift in the magnetic field direction causes the rotor to rotate in the opposite direction.

This method is straightforward and widely used in practice because it allows for an immediate change in the motor's direction without the need for any additional equipment or complex adjustments. Additionally, three-phase motors inherently rely on the phase relationship of the power supply to function correctly, making the swapping of phase lines a direct and effective way to control rotation.