Available Fault Current: What is it? (And How To Calculate It)
What is Available Fault Current?Available fault current (AFC) is defined as the largest amount of current available during a fault. It is the maximum amount of current that can be delivered to the electrical equipment under a fault condition. The available fault current is also known as the available short-circuit current.The term ‘Available Fault Current’ was introduced in the 2011 NFPA 70: National Electric Code (NEC) in section 110.24 (latest version of the code).According to this section, i
