To obtain a proper voltage reading for phase-to-neutral in a three-phase system, you should connect between

To obtain a proper voltage reading for phase-to-neutral in a three-phase system, you should connect between

• A. Phase A and Neutral.
• B. Phase B and Neutral.
• C. Phase C and Neutral.
• D. Phase A and Phase B.

Answer: (C)

To read phase-to-neutral voltage, you connect the meter between one phase conductor and the neutral conductor. In a three-phase system with a neutral, the voltage from a single phase to neutral is the phase voltage, not the voltage between two phases. If you instead connect between two phases, you measure the line-to-line voltage, which is higher (in a balanced system, about sqrt(3) times the phase-to-neutral voltage). So the proper way is to use one phase and the neutral; any phase can be used.

To read phase-to-neutral voltage, you connect the meter between one phase conductor and the neutral conductor. In a three-phase system with a neutral, the voltage from a single phase to neutral is the phase voltage, not the voltage between two phases. If you instead connect between two phases, you measure the line-to-line voltage, which is higher (in a balanced system, about sqrt(3) times the phase-to-neutral voltage). So the proper way is to use one phase and the neutral; any phase can be used.