Ecmweb 8748 Nec Illustrated Catastrophes Jan 2017 Pr

Illustrated Catastrophes: Outdoor Atrocity

Jan. 19, 2017
More Code catastrophes uncovered and corrected in these faulty installations

All references are based on the 2017 edition of the NEC.

Outdoor Atrocity

Believe it or not, I actually found this while walking along a pier. Yes, that’s NM type cable feeding the motor. According to Sec. 334.12(B)(4), NM cable cannot be used in wet locations. Yet this installer thought it would be just fine to use it to wire this motor, which is located outside. Wrong! The NM cable is just stuffed into the box through the remnants of a liquidtight connector with no means of secure support. This violates Sec. 314.17(B), which requires the NM cable to be secured to the metal box. The installer also paid no attention to covering the box either. Not installing a cover on the box leaves the splices exposed to the elements, and now this box could easily fill with water during a rainstorm. That would greatly increase an already dangerous shock hazard. The missing cover is a violation of Sec. 315.25, which requires covers, canopies, faceplates, luminaires, or lampholders to be installed on boxes in order to complete the installation. To make matters worse, I could not find a disconnecting means for this motor. Lack of a disconnect at the motor location would generally be a violation of Sec. 430.102(B)(1).

HVAC Hack

I’m not sure who completed this installation, but I sure hope it was not a “qualified” electrician. Perhaps it was the HVAC technician. Whoever did it needs to brush up on some Code rules. The first problem I see is the white PVC plumbing fitting attached to the pipe coming out of the ground. Using plumbing parts for electrical installations is a violation of Sec. 110.3(B) because the plumbing fittings would not be listed for use on electrical installations. According to Sec. 110.8, “Only wiring methods recognized as suitable are included in this Code.” You would be hard pressed to find plumbing fittings in the NEC. The next concern is the broken or separated raceways. Due to all of the tape covering the fittings, I can’t tell if the fittings are broken or merely separated. Wrapping them with tape was not the correct fix. If the raceways or fittings are broken, it would violate Sec. 110.12(B) because the damaged parts could adversely affect the safe operation of this equipment. In any case, it is a violation of Sec. 300.12, since the raceway is no longer continuous between boxes, cabinets, or enclosures.

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.

Voice your opinion!

To join the conversation, and become an exclusive member of EC&M, create an account today!

Sponsored Recommendations

Electrical Conduit Comparison Chart

CHAMPION FIBERGLASS electrical conduit is a lightweight, durable option that provides lasting savings when compared to other materials. Compare electrical conduit types including...

Considerations for Direct Burial Conduit

Installation type plays a key role in the type of conduit selected for electrical systems in industrial construction projects. Above ground, below ground, direct buried, encased...

How to Calculate Labor Costs

Most important to accurately estimating labor costs is knowing the approximate hours required for project completion. Learn how to calculate electrical labor cost.

8 Types of Electrical Conduit and Their Uses

Electrical conduit is a tube or raceway used to house and protect electrical wires within a building or structure. From data centers to underground subways to ports and bridges...