Under normal conditions, what should the state of the normal phase rotation pilot be?

Under normal conditions, what should the state of the normal phase rotation pilot be?

• A. On
• B. Off
• C. Dim
• D. Flashing

Answer: (A)

The indicator for normal phase rotation is meant to show that the three-phase supply has the correct sequence and the motor will turn in the intended direction. When everything is wired and powered normally, that pilot light should be energized and stay On. This confirms the control circuit and phase order are correct, so the pump will start and run properly. If the light were Off, Dim, or Flashing, it would signal a fault or misphasing that could cause incorrect rotation or loss of proper operation, which is not acceptable for normal conditions. So, under normal conditions, the normal phase rotation pilot should be On.

The indicator for normal phase rotation is meant to show that the three-phase supply has the correct sequence and the motor will turn in the intended direction. When everything is wired and powered normally, that pilot light should be energized and stay On. This confirms the control circuit and phase order are correct, so the pump will start and run properly. If the light were Off, Dim, or Flashing, it would signal a fault or misphasing that could cause incorrect rotation or loss of proper operation, which is not acceptable for normal conditions. So, under normal conditions, the normal phase rotation pilot should be On.