Jerseydaze
Senior Member
ac consensor calls for max 25 amp breaker can I run 12-2 romex ( next size breaker )in this situation?
As JLJ stated the conductors are sized to the MCA and the next size up rule does not apply. The MaxOCPD is not relevant to sizing the conductors.
The overload protection required by 440.52, often integral with the unit, protects the conductor from overload. The OCPD protects against short circuit and fault.I know this is the rule but what protects the wire from over current?
True, I might add that if the MOCP is 25 amp, it is possible that the MCA could be low enough that even #14 could be used, even at the 60 degree rating.As JLJ stated the conductors are sized to the MCA and the next size up rule does not apply. The MaxOCPD is not relevant to sizing the conductors.