How do you meg a wye delta motor?

To meg (megger test) a wye-delta motor, first ensure the motor is disconnected from the power supply. Connect the megger leads to the motor windings, testing each phase to ground and between the phases while observing the manufacturer's recommended insulation resistance values. If the readings are below acceptable levels (typically 1 MΩ or higher), it indicates insulation breakdown. Lastly, make sure to rotate the motor shaft during testing to ensure all windings are tested effectively.