Hint: Just a little short
See the answer below.
The adage “Measure twice. Cut once.” was apparently not followed by this installer. The PVC conduit on the right end of this box came up a little short. Perhaps the earth settled, or perhaps there was some thermal expansion and contraction that caused this conduit to pop out of the connector. Whatever the reason, it creates a violation of Sec. 300.12, which requires raceways to be continuous between cabinets, boxes or other enclosures. This one doesn’t quite make it.
Section 352.30 similarly requires PVC conduit to be installed as a complete system. If thermal expansion and contraction is a concern, then expansion fittings should be installed in accordance with Sec. 352.44. Where earth movement could cause raceway damage, the PVC conduit should be arranged to comply with Sec. 300.5(J). Expansion fittings, expansion-deflection, and deflection fittings installed in accordance with Sec. 300.7(B) could also provide the necessary movements needed to keep this installation safe and Code compliant.
I’m not so sure this box is supported properly either. Section 352.12(B) does not allow PVC to support luminaires or equipment other than conduit bodies in accordance with Sec. 352.10(H). This enclosure is a swimming pool junction box. It is not a conduit body.
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.