Which of the following is a voltage available for a 13200 volt 3 phase 4 wire system?

In a 13200 volt three-phase four-wire system, the line-to-line voltage is 13200 volts, and the line-to-neutral voltage can be calculated using the following relationship: the line-to-neutral voltage in a three-phase system is obtained by dividing the line-to-line voltage by the square root of 3 (approximately 1.732).

To find the line-to-neutral voltage for this system, you would perform the calculation:

13200 volts ÷ √3 = approximately 7619 volts.

This value is commonly rounded to 7620 volts in practical applications, making it the correct answer among the options presented. Therefore, 7620 volts represents the available voltage when converting from line-to-line voltage to line-to-neutral voltage in a three-phase system.

The other choices, while they may be commonly encountered voltages in other systems, do not reflect the appropriate voltage derived from the specified 13200 volt three-phase system. For instance, 480 volts is typically associated with a different service configuration, like a step-down transformer system. Similarly, 120 volts and 230 volts are standard voltage levels for single-phase services and do not apply to the three-phase system in question.