According to NEC 110.24, the maximum available fault current must be marked on what?

The requirement to mark the maximum available fault current is specifically outlined in NEC 110.24, which emphasizes the importance of identifying potential fault currents in a service equipment setting. Service equipment refers to the equipment that delivers electricity to a facility, including the main disconnect and overcurrent protection devices. It is critical for this equipment to be marked with the available fault current to inform personnel of potential hazards and enable appropriate precautions during work or maintenance activities.

Marking this information on service equipment serves several purposes: it helps to ensure safety by providing relevant data to electricians and maintenance staff, aids in proper sizing of protective devices, and ensures compliance with electrical codes. The other options, while they may also contain fault current calculations, are not mandated by NEC 110.24 to have this specific marking, thereby reinforcing the importance of service equipment as per the National Electrical Code.