Assuming that the 3-phase power source has a phase sequence of A-B-C and that the motor is connected as shown in figure "A", if the motor has a clockwise (CW) rotation, what statement is true concerning the motors connected as shown in the other figures? EL-0156
Official USCG Answer & Rule Citation
Correct Answer: Option B — Motors "B" and "D" would have a counterclockwise (CCW) rotation and motor "C" would have a clockwise (CW) rotation.
Interchanging any two stator power leads on a three-phase induction motor reverses the rotating magnetic field direction. Applying symmetrical lead permutations alters phase rotation identically across standard marine distribution circuits per IEEE 45 specifications.
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