Transformer serving 2 buildings

[LDC-Colorado]

I have one 2500KVA transformer serving 2 buildings. Building 1 load is 2000 KVA and Building 2 load is 300 KVA. Am I allowed to tap the secondary of the 2500 KVA transformer for both feeds without putting protection breakers for the feeders within 25 ft of the 2500 KVA transformer?

Additional information.....

The 2500 KVA transformer is 13.2 KV to 480V transformation.

The Building 1 feeder is connected to a single disconnecting device in switchgear with a 2000 Amp bus structure.

The Building 2 feeder feeds a 300KVA - 480V to 208/120V transformer. Assuming there is no need for breakers with 25 ft of the 2500KVA, the Primary of the 300KVA transformer would be protected by a fused disconnect. The secondary of this transformer terminates in a 1000 Amp PDU circuit breaker.

Thanks for listening.

 

[don_resqcapt19]

You can use 240.21(C)(6) as long as you comply with the restrictions. This will require that the feed to the 300kva transformer have an ampacity that is not less than the value of the primary-to-secondary voltage ratio multiplied by one-third of the rating of the overcurrent device protecting the primary of the transformer. If the 2500 kva transformer is outside then you could use 240.21(C)(4). This rule does not have a minimum ampacity for the conductors nor does it have a maximum length.
Don