What is the phase-to-ground voltage of a 4,160-volt grounded wye-connected system?

To find the phase-to-ground voltage of a grounded wye-connected system, you use the relationship between the line voltage and the phase voltage. In a wye configuration, the line voltage is equal to the square root of three times the phase voltage.

Given that the line voltage for the system is 4,160 volts, the formula for the phase voltage (which is the phase-to-ground voltage) is:

Phase Voltage = Line Voltage / √3.

Substituting in the values:

Phase Voltage = 4,160 V / √3 ≈ 4,160 V / 1.732 ≈ 2,400 V.

Thus, the phase-to-ground voltage in this grounded wye-connected system is approximately 2,400 volts. This is why the choice of 2,400 V is the correct answer, as it appropriately reflects the calculated phase voltage based on the given line voltage.