Switches controlling line-to-neutral loads must have a neutral conductor installed at a switch serving bathrooms, hallways, stairways, or rooms suitable for human habitation or occupancy, as defined ...
Q. Is a neutral conductor allowed to be switched for 3-way or 4-way switching? A. Wiring for 3-way and 4-way switching must be done so that only the ungrounded conductors are switched [404.2(A), as ...
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