Multiple Transformer OCPD

[keelv]

Can a 3-ph MV fused switch feed and protect two transformers? Or, is it required that you need individual primary OCPD for each transformer?

If possible, would the primary protection be sized as shown on Table 450.3(A) by adding the 2 transformers rated current?

 

[jim dungar]

Yes it is possible that a single device could feed multiple transformers

Each transformer must be protected by an OCPD sized no larger than if it is the only one in the circuit.

Practically, you should plan on individual devices.