How can you tell if a motor is Wye-Delta wound?
The part-wind and Wye-Delta motor starters must change the way the power is fed to the motor windings, within the starting equipment. Consequently, there will be more wires in the motor junction box than one may be familiar with DOL starting. There may be 9 or 12 wires from a dual voltage, Wye-Delta motor. This should not concern a competent site electrician, however, as all the motor leads are numbered and the motor wiring diagram will detail how the motor is to be wired, depending upon the power supply and the starting equipment specified and supplied on site.
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