floating outlet/junction box

What’s Wrong Here? Hint: Floating Junction Box

April 27, 2023
Think you know how this installation violates the NEC?

Hint: Floating junction box

The only things supporting that “floating” outlet/junction box is the electrical metallic tubing (EMT) connected on the right side of it and the metal cable connected on the left side of it. Neither of these wiring methods is permitted to be used as a supporting means for boxes. Section 314.23(A)-(H) provides a multitude of permitted options for securing and supporting boxes. None of those permitted options includes using EMT or metal cable. Permitted supporting means include nails, screws, braces, brackets, support wires used for supporting suspended ceilings, threaded RMC with restrictions, threaded IMC with restrictions, and flexible cord pendants. Section 358.12(2) prohibits using EMT for supporting boxes. Section 300.11(A) requires boxes to be securely fastened in place. This box is simply “floating” on air.

About the Author

Russ LeBlanc | Owner

Russ started in the electrical trade as an apprentice in 1985. He worked his way up to become a Journeyman Electrician and then eventually became a Master Electrician and Licensed Construction Supervisor. In 1999 Russ become an Electrical Instructor for The Peterson School of Engineering in Massachusetts where he developed his passion for teaching, and quickly became Department Head of Electrical Instruction. Russ has taught thousands of apprentices, electricians, engineers, inspectors, and other electrical professionals during his career as an instructor. He continues to provide electrical professionals with Electrical Code seminars, Arc-Flash Awareness training seminars and educational material through his LeBlanc Consulting Services in North Reading, MA whose specialty is educating electricians. He has been an active member of the NFPA Electrical Section and has authored hundreds of National Electrical Code proposals and comments which have become Code rules to improve the safety for the electrical industry. Russ is also an IAEI certified Electrical Inspector.

Please visit www.russleblanc.net for more information.

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