The available fault current markings, which are referenced in Sec. 110.24 of the 2014 NEC, are related to ____________.

A. the short circuit current ratings of the equipment

B. arc flash boundaries

C. shock protection boundaries

D. work space requirements

Answer: A

The 2014 NEC has added an Informational Note to clarify that the available fault current markings, which are required to be marked in the field as per 110.24, are related (compared) to the short circuit current ratings of the equipment and are not intended to be used to meet the requirements of NFPA 70E.

Owen is the owner and president of National Code Seminars and the holder of master electrician certifications in 46 states. He can be reached at necexpert@aol.com.