Electrician Red Seal · Question
In a three-phase, four-wire wye-connected system, what is the relationship between the phase voltage and the line voltage?
In a wye-connected system, the line voltage (measured between any two line conductors) is greater than the phase voltage (measured from any line conductor to ne
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Question: In a three-phase, four-wire wye-connected system, what is the relationship between the phase voltage and the line voltage?
Answer options:
- Line voltage = Phase voltage
- Line voltage = Phase voltage / √3 ✅ Line voltage = Phase voltage × √3
- Line voltage = Phase voltage × 2
Correct answer: Line voltage = Phase voltage × √3
Explanation: In a wye-connected system, the line voltage (measured between any two line conductors) is greater than the phase voltage (measured from any line conductor to neutral) by a factor of the square root of 3 (approximately 1.732).
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