Question: Where conduits are used as service masts, hubs shall be _____ for use with service-entrance equipment.
a) identified
b) approved
c) of a heavy-duty type
d) listed
See answer below.
Answer: a) identified
Section 230.28(A) states, “Hubs intended for use with a conduit that serves as a service mast shall be identified for use with service-entrance equipment."
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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.
