hello everyone,
I'm working a project where we have a 300KVA, 208Y/120V utility transformer and 25HP fire pump tapped from the transformer secondary. I was asked to confirm that if the service transformer does not need to be sized for the building load plus the locked rotor current of the fire pump and jockey pump per section 695.3(A). I have done this calculation before when we had a dedicated transformer for the fire pump (separate service) but not sure what is exactly we need to do when we have the building load as well. The estimated demand load is at 240KVA. Any thoughts? Thanks,
I'm working a project where we have a 300KVA, 208Y/120V utility transformer and 25HP fire pump tapped from the transformer secondary. I was asked to confirm that if the service transformer does not need to be sized for the building load plus the locked rotor current of the fire pump and jockey pump per section 695.3(A). I have done this calculation before when we had a dedicated transformer for the fire pump (separate service) but not sure what is exactly we need to do when we have the building load as well. The estimated demand load is at 240KVA. Any thoughts? Thanks,