What's Wrong Here?

What’s Wrong Here? Hint: Exit, Stage Left

Jan. 7, 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: Exit, stage left

Find the Answer

Neither this exit sign nor the metal-clad (MC) cable feeding it is designed to be installed in this outdoor wet location.

Section 330.10(11) permits MC cable to be used in a wet location when it includes a corrosion-resistant jacket over the metallic covering, and either the metallic covering is impervious to moisture, or a moisture resistant jacket is provided under the metallic covering, or the insulated conductors inside of it are listed for use in a wet location. In this instance, neither the cable connectors or this type of cable is listed for this application. The use of incorrect cable connectors violates the requirements of Sec. 330.40. Water can easily enter this exit sign since the connector was installed on the top of the sign.

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In addition, Sec. 410.10(A) requires luminaires in wet locations to be installed so water cannot enter or accumulate in wiring compartments or other parts of the unit. The luminaire must also be listed and marked “Suitable for Wet Locations.”

And as always, using equipment for installations where it is not listed or labeled for use violates the rule of Sec. 110.3(B).

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.