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Code Quiz: NEC Rules for Wireway Runs

Oct. 7, 2021

Test your NEC knowledge.

John Lupacchino

Based on the 2020 NEC.

Question: Are wireways permitted to pass through a wall or must they remain exposed for the entire run?

See answer below.

Answer: Yes

Explanation: Section 376.10(4) and 378.10(4) both permit a wireway to pass through a wall as long as the conductors remain accessible on each side of the wall and the section passing through the wall is unbroken.

John Lupacchino is a senior design engineer with Gaylor Electric, Inc. in Noblesville, Ind. and serves as an alternate on NEC Code-Making Panel No. 3. He is currently licensed in more than 80 jurisdictions. He can be reached at [email protected].

About the Author

John Lupacchino | Senior Design Engineer

John began his career in electrical construction as an apprentice and worked his way through the trade. He is currently licensed in more than 80 jurisdictions. With more than 35 years of experience, he now plays a vital role in Gaylor Electric’s Engineering Department, where he serves as a senior design engineer. With a focus on design engineering, quality assurance, and code compliance, he has earned the highest level of respect from industry professionals alike. John currently serves as an alternate on NFPA 70 Code Making Panel No. 3. In addition, he enjoys sharing his electrical knowledge through education. As an Associated Builders and Contractors instructor, he continues to help grow a new generation of high-performing construction leaders.