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I found this one gang plastic nail-on box in the ceiling of a client's basement. It has a type AC (BX) metal armored cable and a non-metallic cable spliced together. The non-metallic cable has a grounding conductor. BX cable normally uses its metal armor outer jacket as the grounding conductor, but it must be connected properly. A BX cable should be spliced inside of a metal box so that the armor ground is carried over to the metal of the box by using the proper cable connector. If a plastic box is used it is necessary to attach a BX connector with a metal grounding bushing onto the BX cable. A grounding conductor is then connected to the lug on the grounding bushing. This electrical box should also have a blank plastic cover on it. This is clearly a naughty electrical code and safety violation.

Naughty Electrical Code and Safety Violations

Dear Mr. Electrician:  The home inspector said my house has a lot of naughty electrical code and safety violations.  How can I identify the...