Red Seal Electrician Practice
Power factor and three-phaseQuestion 1413 of 1506

A balanced wye-connected load is fed from a 208 V line-to-line supply. What is the voltage across each phase?

  1. 120 V
  2. 208 V
  3. 104 V
  4. 69.3 V
Show answer

Correct answer: 120 V

In a balanced wye, phase voltage = line voltage ÷ √3 = 208 ÷ 1.732 = 120 V.

Source: Computed, 7.5: Three-phase Y and Delta Configurations

Practice power factor and three-phase

Questions last reviewed: 18 October 2026