What's Wrong Here?

What’s Wrong Here? Hint: An Up-in-the-Air Handler Switch

April 21, 2016

Can you identify the Code violation(s) in this photo?

How well do you know the Code? Think you can spot violations the original installer either ignored or couldn't identify? Here's your chance to moonlight as an electrical inspector and second-guess someone else's work from the safety of your living room or office. It's your turn to identify the violation.

Hint: An up-in-the-air handler switch

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Find the Answer

The only thing supporting this disconnect switch is the liquidtight flexible metallic conduit (LFMC) and the wires connected to it. Section 300.11(A) requires raceways, boxes, and cabinets to be securely fastened in place. None of this equipment is fastened in place. It is all just free-floating and flopping around on the rooftop.

LFMC is not designed or intended to be used for supporting equipment such as this disconnecting means. Using it for this purpose violates the intent of Sec. 352.12(1) because the strain and extra weight on the raceway could cause damage to the raceway. It is also a violation of Sec. 110.3(B) because it is not designed or listed for this type of support.

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I am also not sure how weatherproof this switch is because it seems to be tilted slightly forward, which could possibly allow rain to enter through the mounting holes on the back of the switch. This may violate the intent of Secs. 404.4(A) and 312.2 because moisture and water are likely to enter the enclosure.

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.