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: Nuts about protection
Find the Answer
Andrew James, a project manager for Industrial Light and Power, LLC shared this photo of a ridiculous installation where the original contractor certainly was “nuts” about insulation protection for the wires going into this weatherproof box. Using single insulated conductors exposed in this manner is a violation of Sec. 300.3(A) of the 2014 NEC. Generally, single conductors are only allowed when installed as part of a Chapter 3 wiring method, such as in a raceway or cable.
Using wire connectors in this manner may be creative, but it is also a violation of Sec. 110.3(B). These devices are not recognized as a type of “bushing” or a connector for connecting wires to boxes. They are designed and listed to connect wires to wires.
This weatherproof box is certainly no longer weatherproof because holes were drilled into the top of it in order to fit the wire connectors. This violates the requirements set forth in Sec. 314.15, which states boxes in wet or damp locations are to be listed for the location and be “placed or equipped so as to prevent moisture from entering or accumulating within the box.” Using the wire connectors and the box in this manner is a violation of Sec. 110.3(B) because equipment must be installed and used according to the instructions included with its listing and labeling. Trust me, you will not find this type of application in the installation instructions.