Before you attempt to fix a faulty light switch, make sure you understand the basics of light switch wiring. Being a smart homeowner means knowing what is going on in your home and how it works, ...

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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 ...

A light switch is the simplest of electrical devices. Flip the switch, electricity flows. Flip it again, electricity stops. Lights on, lights off. That’s great for a small room with one entrance.