Fusing in the Transformer

[ksavoie]

I’m about to order a transformer and was wonder if I need fusing in the transformer to protect the secondary buss?

I have 13.2KV going through a fused (175E fuse) disconnect to a 13.2kv to 480v, 2500kva, Delta-wye, Transformer then feeding a MCC through a 3200a breaker. I do not have any protection from the secondary of my transformer to the 3200a breaker. Do I need it? Any help would be appreciated.

 

[wareagle]

Normally you will not see and protection other than the main breaker in the MCC.

 

[unclebob]

What is the distance between your xfo and the secondary main breaker?