What is the primary voltage rating option for transformers installed on a 4.16-kilovolt, 4-wire wye system?

In a 4.16-kilovolt, 4-wire wye system, the primary voltage rating for transformers is typically based on the system's line-to-line voltage, which is 4,160 volts. Since transformers in a wye system often exhibit a phase-to-neutral voltage that is lower than the line-to-line voltage, one must divide the line-to-line voltage by the square root of 3 to derive the corresponding phase voltage.

However, the voltage listed among the choices that aligns closely with the standard ratings of transformers for a system rated at 4.16 kV is 2400 volts. This is because transformers in this system commonly use a scaling factor that aligns with standard voltage ratings used in electrical distribution.

As a result, the chosen answer is reasonable in the context of typical transformer installations, as it fits the general industry standards for voltage ratings while correlating effectively with the rated system voltage.