mayanees
Senior Member
- Location
- Westminster, MD
- Occupation
- Electrical Engineer and Master Electrician
I'm reviewing a design in a small Data Center where 225-amp busway is connected to 250-amp thermal magnetic breakers. I can rationalize that the 250-amp breaker provides protection at the 80% level, or 200 amps, and I've gotten approval before from an AHJ for similar rationale. But this won't likely be inspected, so I'm writing to get opinions from forum members.
I would prefer to see a 225-amp breaker, then there's no question.
I won't reject a design when I think it's actually safe, but there could be other opinions out there that present an opposing viewpoint, which I would really like to hear before passing approval.
Any comments are appreciated.
John M
I would prefer to see a 225-amp breaker, then there's no question.
I won't reject a design when I think it's actually safe, but there could be other opinions out there that present an opposing viewpoint, which I would really like to hear before passing approval.
Any comments are appreciated.
John M