Hello there! I've got a situation here where we are setting a 112.5kva480x 120/208 transformer on the roof of a building. It will supply power to a 400Amp MCB-type panelboard below roughly 40'of conduit and wire away. Are we required to have a fused disconnect near the transformer (word has it wthin 25')? Where in the code is this requirement if it exists? Primary overcurrent protection is a 175amp circuit breaker. Thanks much for any help