Code Q&A: Protection Requirements for Cables and Raceways Run Parallel to Framing Members

Test your knowledge of the NEC.

Sept. 22, 2022

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Based on the 2020 NEC.

Q. What are the Code rules relating to the protection of cables and raceways installed parallel to framing members and furring strips?

See answer below.

A. Cables or raceways run parallel to framing members or furring strips must be protected by installing the wiring method not less than 1¼ in. from the nearest edge of the framing member or furring strip. If the edge of the framing member or furring strip is less than 1¼ in. away, a 1⁄16 in. thick steel plate of enough length and width must be installed to protect the wiring method from screws and nails [Sec. 300.4(D)].

Exception No. 1: Protection is not required for rigid metal conduit, intermediate metal conduit, PVC conduit, or electrical metallic tubing.

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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.