The total rating of utilization equipment fastened in place, shall not exceed ____% of the branch-circuit ampere rating where lighting units and cord-and-plug-connected utilization equipment are supplied.
a) 50
b) 75
c) 100
d) 125
See answer and applicable Code reference
The correct answer is: a) 50
Branch circuit rating requirements are outlined in Part II of Art. 210. As per 210.23(A)(2), "The total rating of utilization equipment fastened in place, other than luminaires, shall not exceed 50% of the branch-circuit ampere rating where lighting units, cord-and-plug-connected utilization equipment not fastened in place, or both, are also supplied."
About the Author
Mike Holt
Mike Holt is the owner of Mike Holt Enterprises (www.MikeHolt.com), one of the largest electrical publishers in the United States. He earned a master's degree in the Business Administration Program (MBA) from the University of Miami. He earned his reputation as a National Electrical Code (NEC) expert by working his way up through the electrical trade. Formally a construction editor for two different trade publications, Mike started his career as an apprentice electrician and eventually became a master electrician, an electrical inspector, a contractor, and an educator. Mike has taught more than 1,000 classes on 30 different electrical-related subjects — ranging from alarm installations to exam preparation and voltage drop calculations. He continues to produce seminars, videos, books, and online training for the trade as well as contribute monthly Code content to EC&M magazine.