Nonmetallic wireways can pass transversely through a wall _____.
a) if the length through the wall is unbroken
b) if the wall is not of fire-rated construction
c) in hazardous (classified) locations
d) if the wall is of fire-rated construction
See answer and applicable Code reference
The correct answer is: a) if the length through the wall is unbroken
Article 378 covers the use, installation, and construction specifications for nonmetallic wireways and associated fittings. As noted in Sec. 378.10(4), the use of nonmetallic wireways shall be permitted "as extensions to pass transversely through walls if the length passing through the wall is unbroken." It goes on to say, "Access to the conductors shall be maintained on both sides of the wall."
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.
