Red Seal Electrician Practice
Power factor and three-phaseQuestion 1022 of 1506

How can an electrician reverse the phase rotation of a three-phase supply to a load?

  1. Swap all three conductors in a circle
  2. Reverse the neutral and one hot wire
  3. Add a capacitor to each of the phases
  4. Swap any two of the three hot conductors
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Correct answer: Swap any two of the three hot conductors

Swapping any two lines always reverses the sequence.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 7.3: Phase Rotation

Practice power factor and three-phase

Questions last reviewed: 18 October 2026