Code Q&A: Securing and Supporting PVC Raceway

May 8, 2014
NEC rules for securing and supporting PVC raceways

Q. What is the Code rule for the securing and supporting of PVC raceways? Answer based on 2011 NEC.

Find the Answer

A. PVC conduit must be securely fastened and supported in accordance with the following [352.30]:

• PVC conduit must be secured within 3 ft of every box, cabinet, or termination fitting, such as a conduit body [352.30(A)].

• PVC conduit must be supported at intervals not exceeding the values in Table 352.30, and the raceway must be fastened in a manner that permits movement from thermal expansion or contraction.

• PVC conduit installed horizontally in bored or punched holes in wood or metal framing members, or notches in wooden members, is considered supported, but the raceway must be secured within 3 ft of termination [352.30(B)].

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.

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