If the rotation of a 3-phase electrical motor is backward, what should be done?

Switching two leads on the three-phase wiring is the correct approach to change the direction of rotation in a three-phase electric motor. In a three-phase system, the direction of rotation is determined by the phase sequence of the electrical supply. By swapping any two of the three leads, the phase sequence is altered, thereby reversing the motor's direction.

This method is both simple and effective, and it avoids the need for more extensive actions like rewiring the entire system, changing settings, or replacing the motor, all of which would be unnecessary and more costly solutions. Understanding this principle is essential in motor operations and maintenance, as it allows for quick troubleshooting and adjustments to motor rotation without extensive downtime.