Electrician Red Seal · Question
A three-phase, 600 V (line-to-line), 60 Hz electrical service supplies an industrial facility. If a technician measures the voltage between one phase conductor and the grounded (neutral) conductor, what approximate value would they expect to read?
For a 600 V, three-phase system, the phase-to-neutral voltage is calculated as the line-to-line voltage divided by the square root of 3 (600 V / √3 ≈ 347 V). Th
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Question: A three-phase, 600 V (line-to-line), 60 Hz electrical service supplies an industrial facility. If a technician measures the voltage between one phase conductor and the grounded (neutral) conductor, what approximate value would they expect to read?
Answer options: ✅ 347 V
- 208 V
- 120 V
- 600 V
Correct answer: 347 V
Explanation: For a 600 V, three-phase system, the phase-to-neutral voltage is calculated as the line-to-line voltage divided by the square root of 3 (600 V / √3 ≈ 347 V). This is a common voltage for lighting and smaller loads in industrial settings.
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