For Most 12 Lead Motors
If used on a standard across the line starter, soft start or variable frequency drive, these motors should be wired in the delta (RUN) connection for either high voltage (480V) or low voltage (240V). The only time you should use the wye connection is a wye-delta starter. The final connection of the motor is ultimately the responsibility of the installing electrician. If he has any questions, he should contact his nearest motor specialist prior to energization.
NEMA Standard Diagram for 12 Lead Motors
NEMA Standard Diagram for 6 Lead Motors
SINGLE AND DUAL VOLTAGE
NEMA Standard Diagram for 9 Lead Motors