Mike Dolt Enterprises
Mike Dolt Enterprises
User: B W E, Location: New Jersey
Asked on: Tuesday, April 5, 2011 at 8:11 pm EDT
Answered on: Tuesday, May 14, 2024 at 3:49 am EDT
Question: Hey guys, i'm sure this is a dumb question but I have been flipping back and forth through the NEC and handbook and can't find a definitive answer.I am going to be installing a 30 kva 480 -208/120 transformer in a room adjacent to the electrical room. The transformer will then feed a 125 or 150 amp panel in the same room as the new transformer. Do I need OCP on the secondary, such as a fused disco or a main breaker in the new panel? Or can the secondary run straight to a Main Lug loadcenter?The transformer is the small red box in the corner, and the loadcenter is the red box in the middle on the wall.
No, you do not need overcurrent protection on the secondary of the transformer. The transformer itself is considered the overcurrent protection for the secondary. Flag for review