NEC, with a few exceptions, requires that air-conditioning and refrigeration, multi-motor, and combination-load equipment be marked with its SCCR.

NEC, with a few exceptions, requires that air-conditioning and refrigeration, multi-motor, and combination-load equipment be marked with its SCCR.

• A. 430.8
• B. 440.4(b)
• C. 701.5
• D. 708.24

Answer: (B)

SCCR marking on equipment ensures you know the fault current the device can safely withstand, so it can be paired with proper overcurrent protection and supply conditions. For air-conditioning and refrigeration equipment, including multi-motor and combination-load setups, the NEC specifically requires this marking. That exact requirement is in 440.4(b), which states that equipment shall be marked with its short-circuit current rating. Having the SCCR visible helps installers confirm compatibility with the system’s fault current and select appropriate protective devices. The other sections are about different topics and do not address SCCR marking for this type of equipment, so they don’t apply to this requirement.

SCCR marking on equipment ensures you know the fault current the device can safely withstand, so it can be paired with proper overcurrent protection and supply conditions. For air-conditioning and refrigeration equipment, including multi-motor and combination-load setups, the NEC specifically requires this marking. That exact requirement is in 440.4(b), which states that equipment shall be marked with its short-circuit current rating. Having the SCCR visible helps installers confirm compatibility with the system’s fault current and select appropriate protective devices.

The other sections are about different topics and do not address SCCR marking for this type of equipment, so they don’t apply to this requirement.