In this scenario, the metallic outlet box is inadequately supported, relying on a single steel conduit for its stability. This arrangement contravenes Section 314.23 of the 2017 National Electrical Code (NEC).
According to NEC 314.23(F), an outlet box designed to hold devices or support lighting fixtures must be adequately supported by raceways. Specifically, the box should have threaded entries (hubs) and be secured by at least two conduits threaded into the box. This requirement ensures proper support and stability, reducing the risk of the outlet box loosening or falling, which could result in electrical failures or safety hazards.
In summary, to ensure compliance with the NEC and maintain safe and secure installations, the outlet box must be supported by multiple conduits rather than relying on a single conduit.
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