winslowfam
Senior Member
- Location
- VA
Hi...I have spent a good amount of time already trying to completely understand this portion of the code, but I still need a bit of clarification. I was asked by a client if the installation of a 208/120V panelboard by a contractor at his facility meets the code requirement for secondary conductor/panelboard protection. The panelboard is fed from a 480-208/120V transformer and is within 10 feet of this transformer...but it does not have a main breaker. The primary protection for the transformer is rated <=125% of the transformer FLA. The secondary conductors are properly sized. After much reading, I think these secondary conductors are allowed to be protected by the transformer primary overcurrent device, along with the panelboard (240.21(C )(2) and 408.36(B)).
Am I correct? Thanks for your help...
Am I correct? Thanks for your help...