How many fuses are required for the specified bank?

The requirement for the number of fuses in a specified bank typically relates to the configuration and the size of the transformer or capacitor bank being used. If the setup consists of three-phase systems, it's generally standard to utilize one fuse per phase to provide protection against overcurrent.

In this case, the answer indicates that three fuses are required. This is because the transformer or equipment being referenced likely operates under a three-phase system. By having three fuses, one can adequately guard each phase from overloads, ensuring that if one fuse blows, the remaining phases can continue to operate safely, preventing catastrophic failure of the entire bank system.

Utilizing the correct number of fuses is critical to maintain the performance and reliability of electrical systems, as it provides a safeguard mechanism that allows for isolated failures while ensuring continuity in operation of the remaining phases.