The hot black wire from the power source travels through the switch, and from there, to the light. Flipping the switch interrupts the flow of electricity to the light, turning it off and on.

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A light switch connects to the wiring of your house and acts as a gatekeeper for a particular electrical circuit, allowing you to send or cut off power to a given light source or appliance. Light ...

Wire and install the new light switch exactly like the old one, reinstall the switch plate, and restore the power. 3. Fixture Issues Less commonly, the light fixture itself may be to blame.

Dimensions 4.7 x 2.9 x 1.7 inch Compatibility Eve Light Switch requires a neutral wire and replaces a single-pole or 3-way switch. Only for use with copper or copper-clad wire in dry, indoor ...

One wire comes in from the power source, and one wire goes out to the light (s). A 3-way switch adds two terminals for travelers, which connect two 3-way switches together.