The way to Wire A Breaker To A Light Switch

Installing lights and switches may require adding a new electrical circuit in your home. Adding a circuit requires adding a brand new circuit breaker to your main service panel. Electrical wiring knowledge is helpful when you are adding a breaker to your panel, but you may learn by doing. Take precautions against accidents. Warn others in your home that you’re working on the service panel they usually shouldn’t restore power to it. Leave a note on the service panel to warn others to leave things turned off when you find yourself off in another room working on the new circuit.

Wireless 3 gang 1 way Wall Touch Switch

Things You may Need
Phillips or slotted screwdriver
Two-wire electrical tester
12/2 nonmetallic electrical cable
Cable ripper
Wire strippers
Wire connectors
Needle nose pliers
Single-pole light switch
20-amp single-pole breaker

Turn the primary breaker off to disconnect the electricity to the remainder of the service panel box. Locate the primary breaker at the highest of the service panel; it is a minimum of 100 amps. Check your private home to ensure no electricity continues to be on.

Remove the screws holding the cover to the service panel. Remove the cover, exposing all of the breakers and the wiring for your property. Use a two-wire tester to check for the presence of electricity.

Set the tester dial on 250 AC and touch one lead to a terminal holding a wire at the back of any breaker and the opposite result in metal. The needle shouldn’t move if the electricity is disconnected correctly. Randomly test other breakers to verify disconnection of the electricity.

Pull a length of 12/2 nonmetallic electrical cable from your light switch location to the service panel. Use a cable ripper to strip 8 to 10 inches of the exterior insulating sheath from the 12/2 NM electrical cable at both the service panel and the light switch location to expose the black, white and bare copper wires inside.

Strip the ends of the exposed wires to remove no less than 5/8 inch of insulation, using wire strippers. Do that at both the service panel location and the light switch location.

Connect the white wire from your light fixture to the white wire from the 12/2 NM you pulled to the light switch location. Twist a wire connector clockwise onto the two white wires to hold them together. Twist another wire connector onto the bare copper wire from the light and the bare ground wire from the NM electrical cable.

Bend the ends of the two black wires contained in the switch box, using needle-nose pliers to create small hooks. Place the black wire leading from the light fixture under the top brass terminal on the only pole light switch. Place the black wire you pulled from the service panel under the bottom brass terminal. Tighten the terminals by turning them clockwise with a screwdriver.

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How to put in a Breaker

Install a 20-amp single-pole breaker in your service panel. Use a breaker made by the manufacturer of your service panel. Breakers are not entirely universal. You could possibly void the panel’s warranty by installing a breaker not designed in your panel. The back of the breaker hooks under a slot along the edge of the panel that holds the backs of the other breakers into the panel. The front of the breaker pushes onto the metal bus bar in the center of the panel.

Push the black wire from the 12/2 NM cable underneath the terminal screw on the back of the breaker. Tighten the terminal screw down onto the wire.

Install the white wire underneath a terminal screw on the neutral bar. The neutral bar is thin and silver, with all of the white wires from the opposite circuits connected to it. Install the bare copper wire in the ground bar where all other green and bare copper wires are connected.

Install the cover back onto the service panel. Turn your main breaker on and switch your new breaker on to supply power to your light switch.

Do-it-Yourself-Help.com: Wiring Diagrams for Household Switches

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