In a Wye electrical system, the voltage is described as which type?

In a Wye electrical system, the voltage is described as which type?

• A. Phase to phase
• B. Phase to neutral
• C. Line to line
• D. Neutral to line

Answer: (B)

In a Wye (star) connection, there is a neutral point at the center where all three windings meet. The voltage from any one phase conductor to that neutral point is called the phase voltage, or phase-to-neutral voltage. This is the voltage used to power single-phase loads connected between a phase and neutral. The line-to-line voltage (between two phases) is higher and relates to the phase voltage by V line-to-line = √3 × V phase-to-neutral. For example, a balanced Wye system with 480 V line-to-line has a phase-to-neutral voltage of 277 V. So the voltage described for a single phase in a Wye system is phase-to-neutral.

In a Wye (star) connection, there is a neutral point at the center where all three windings meet. The voltage from any one phase conductor to that neutral point is called the phase voltage, or phase-to-neutral voltage. This is the voltage used to power single-phase loads connected between a phase and neutral. The line-to-line voltage (between two phases) is higher and relates to the phase voltage by V line-to-line = √3 × V phase-to-neutral. For example, a balanced Wye system with 480 V line-to-line has a phase-to-neutral voltage of 277 V. So the voltage described for a single phase in a Wye system is phase-to-neutral.