Enter the phase to phase voltage (volts) into the calculator to determine the Phase to Ground Voltage. 

Phase to Ground Voltage Formula

The following formula is used to calculate the Phase to Ground Voltage. 

Vp-g = Vp-p / 1.73

Variables:

  • Where Vp-g is the Phase to Ground Voltage (volts)
  • Vp-p is the phase to phase voltage (volts) 

To calculate the phase-to-ground voltage, divide the phase-to-phase voltage by a value of 1.73.

How to Calculate Phase to Ground Voltage?

The following two example problems outline how to calculate the Phase to Ground Voltage.

Example Problem #1:

  1. First, determine the phase to phase voltage (volts). In this example, the phase to phase voltage (volts) is measured to be 45.
  2. Finally, calculate the Phase to Ground Voltage using the formula above: 

Vp-g = Vp-p / 1.73

Inserting the values from above and solving the equation with the imputed values gives: 

Vp-g = 45 / 1.73 = 26.011 (volts)

Example Problem #2: 

Using the same process as example problem 1, we first define the variables outlined by the formula. In this case, the values are:

phase to phase voltage (volts) = 81

Entering these values into the formula or calculator above gives us:: 

Vp-g = 81 / 1.73 = 46.820 (volts)