Last Updated
：2025/11/29
junction box
（ plural ）
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(electrical engineering) A box through which the main conductors of a system of electric distribution pass, and where connection is made with branch circuits or to extend circuits.
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junction box
Before closing the ceiling, the electrician secured the junction box and labeled each connected branch circuit.
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Before closing the ceiling, the electrician secured the junction box and labeled each connected branch circuit.
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