Phase-to-Phase → Voltage between two phases. (Line voltage)
Phase-to-Neutral → Voltage between one phase and the neutral wire. (Phase Voltage)
Just this indicates how the given voltage is measured (i.e. measured between two phases or between phase and the neutral).
To note that the neutral is in most cases connected to the earth and hence its potential is zero. So sometimes Phase-to-neutral voltage is also called Phase-to-Earth voltage.
At your home, get the voltmeter and measure the voltage in your power outlet and this will give you the phase-to-neutral voltage. If it’s sinusoidal just to get the Phase-to-Phase voltage so just multiply the phase-to-neutral voltage by
. This assumes a 3-phase 4-wire distribution system. If it’s a single-phase 3-wire distribution system then multiply the phase-to-neutral by Notes:
- Phase-to-Phase is also called Line-to-Line.
- Phase-to-Neutral is also called Line-to-Neutral
One LINE to NEUTRAL in either of the above configurations will provide 230V single-phase AC whereas LINE TO LINE can be connected only in the 3-phase arrangement and that will provide 440 3-phase AC