I am drawing a blank on this. I have a 300kVA PDU (480V to 208V/120V). It is being fed from a 450A breaker (not 100% rated).
The calcs come to 451A.
I am typically used to going up a size.
I cannot remember what part of the code allows me to go down a breaker size. This may not be a code issue, but an engineering issue. i.e. the load is still protected, it just cannot get to 100%.
The calcs come to 451A.
I am typically used to going up a size.
I cannot remember what part of the code allows me to go down a breaker size. This may not be a code issue, but an engineering issue. i.e. the load is still protected, it just cannot get to 100%.