The requirement for having a neutral at switch locations was revised. Article 404 Switches I. Installation 404.2 Switch Connections (C) Switches Controlling Lighting Loads. Switches controlling line-to-neutral lighting loads must have a neutral provided at the switch location other than in the following locations: (1) Where the conductors for switches enter the device box through a raceway that has sufficient cross-sectional area to accommodate a neutral conductor. (2) Where the switch ...

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