Red Seal Electrician Practice
Power factor and three-phaseQuestion 1036 of 1506

In a balanced Y-connected load, how does the line current compare with the phase current?

  1. Line current is √3 times phase current
  2. Line current is a third of phase current
  3. They are equal
  4. Line current is zero
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Correct answer: They are equal

Each line wire is in series with one phase in a Y.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 7.5: Three-phase Y and Delta Configurations

Practice power factor and three-phase

Questions last reviewed: 18 October 2026