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Engine : Electricity - 1030/1386
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Suppose it is desired to connect a dual voltage three phase squirrel cage induction motor for low volts, but it is undetermined whether the nine-lead motor is internally configured for wye or delta configuration. Using an ohmmeter, the motor itself with leads disconnected, and the illustration as a guide, what statement is true? EL-0134
A) If leads "7", "8", and "9" have continuity across each other, the motor is "delta" configured. Without continuity, the motor is "wye" connected.
B) If leads "4", "5", and "6" have continuity across each other, the motor is "delta" configured. Without continuity, the motor must be "wye" connected.
C) If leads "7", "8", and "9" have continuity across each other, the motor is "wye" configured. Without continuity, the motor is "delta" configured.
D) If leads "4", "5", and "6" have continuity across each other, the motor is "wye" configured. Without continuity, the motor must be "delta" connected.
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Illustration EL-0134

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