Hi friends,
I encountered a Breaker size issue on a sequence service switchboard.
Here is the information:
The connected load on a 500A circuit breaker is 412.5A but the demand load on the breaker is only 340A.
We have always been designing based on the fact that "Demand load" is always more accurate than "Connected load".
But the inspector argues that the load should be less than 80% of the breaker size.
I guess he was just giving us a hard time as they usually do...because that does not happen in reality...
Could anyone please tell me where in the code does it say that breakers have to be sized according to the "Connected" load?
I encountered a Breaker size issue on a sequence service switchboard.
Here is the information:
The connected load on a 500A circuit breaker is 412.5A but the demand load on the breaker is only 340A.
We have always been designing based on the fact that "Demand load" is always more accurate than "Connected load".
But the inspector argues that the load should be less than 80% of the breaker size.
I guess he was just giving us a hard time as they usually do...because that does not happen in reality...
Could anyone please tell me where in the code does it say that breakers have to be sized according to the "Connected" load?