How to install a bathroom’s light switch & fan switch

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How to install a bathroom’s light switch & fan switch

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Bathrooms typically have a set of two switches on the wall. One switch operates an overhead light, and the second switch operates an exhaust fan. These switches, while separate, are housed in the same gang box installed in the wall. The final step of installing the light and fan, after running the wires, is to wire the switches.


Step One

Turn off the power for the circuit running into the bathroom at the home's breaker box. Don't attempt to work on a live circuit.


Step Two

Remove 1/2-inch of insulation from the ends of the white wires leading from the power in, the lamp and the exhaust fan with a set of wire strippers. Place the bare ends of these wires parallel to each other and slide a wire nut over them. Twist the wire nut to the right until it holds the wires together securely.


Step Three

Remove 1/2-inch of insulation from the ends of the black wires leading from the power in, the lamp and the exhaust fan with a set of wire strippers.


Step Four

Loosen the screws on the right side of the two switches. Slide the bare ends of the black wires leading to the lamp and fan under the top screws on the lamp and fan switches, respectively. Tighten the screws to hold the wires.


Step Five

Cut two 2-inch lengths of insulated solid-core wire. Remove 1/2-inch of insulation from both ends of each wire. Slide the bare end of each black wire under the lower screws of the lamp and fan switches, one wire per each switch. Tighten the screws to hold the wires.


Step Six

Place the bare ends of three remaining black wires parallel to each other and slide a wire nut over them. Twist the wire nut to the right until it holds the wires together securely.


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