How many fuses does the 50 kVA transformer bank require?

A 50 kVA transformer bank typically consists of either a single transformer or a bank of multiple transformers working together to provide the required voltage and capacity. The number of fuses required is generally dictated by the configuration of the transformer bank and the electrical code requirements for protection.

For a three-phase transformer bank with a capacity of 50 kVA, you will typically have three fuses, each corresponding to one phase of the transformer. Each transformer in the bank requires a fuse to protect it from potential overloads and faults. This means that if the transformer bank is set up as a three-phase system, three fuses are necessary to provide adequate protection for each phase.

In addition, there might be a requirement for one additional fuse for the neutral conductor if the system design calls for it, but in most standard three-phase setups involving kVA ratings like this, you will often find three fuses providing the necessary protection for the phases. Thus, the answer indicating three fuses aligns with typical electrical practices in protecting transformer banks in a three-phase design.