How do you wire a new light switch and a switch?

Asked By: Diosdada Monica | Last Updated: 19th February, 2020
Category: hobbies and interests jewelry making
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In respect to this, what wire goes to the light switch?

The black (hot) wire goes to the brass screw or into the hole in the back of the device on the same side as the brass screw. This wire is sometimes red. The green or bare copper (ground) wire, if the device has one, attaches to the green screw terminal on the switch or to the electrical box.

Also, how do you wire a light switch and outlet in the same box? Connecting Separate Devices in a Double-Gang Box The same three options exist when wiring separate devices. To have the switch control just the outlet, connect the hot circuit wire to one of the switch terminals, and then connect the other switch terminal to the brass terminal on the outlet with a short jumper wire.

Herein, how do you add a switch and light to an existing circuit?

Option #1 Branch the Incoming Power from the Existing Fixture down using a 14/2 to the Existing Switch. Then You will have a new HOT and Neutral in the Box. Then add a second 14/2 up to the new Fixture. Use the same Switch as above though remove the interlock between them so you can feed separate HOT feeds.

How do you wire a red white and black light switch?

First, twist the two bare copper ground wires together. Twist the two red wires together and attach a wire nut. Take the white wire from switch two and twist it with the black wire from switch one. Mark the white wire with a piece of electrical tape to indicate that the wire is now a hot wire.

25 Related Question Answers Found

How do you wire multiple lights to one switch?

You run another 12/2 or 14/2 cable from the top of the switch box to the first light. You connect the black wire to the switch. You connect the 2 white wires together, and then connect the other terminal on the switch to the black wire of the cable leaving this junction box towards the first light.

What happens if you wire a light switch wrong?

If either wire at the light fixture is still hot then the switch is wired incorrectly. If one of the wires is still hot at the light fixture with the switch in the off position, then you most likely have the light switch on the neutral wire. Separate the bare ends of the wires so you can safely turn the power back on.

Do I need an electrician to replace a light switch?

If you have a light switch that no longer works, it needs to be replaced. Unless you are unfamiliar with electrical work, it's wise to bring in a professional. An electrician can help make wiring a light switch hassle-free. He'll also be able to install an upgraded light switch that can make your life a little easier.

Why does my light switch not have a neutral wire?

There's a reason why almost every smart switch needs a neutral wire attached: it needs to stay powered all the time. This is because the neutral wire for the circuit is actually in the junction box that holds the light fixture, and the two wires coming down to the switch are the "hot" leg that will power the light.

Does the neutral wire carry current?


To sum up, a live wire carries the full load current, while a neutral wire carries some current, only when the loads are not balanced. The neutral wire is at approximately 0V but to be safe you must NEVER touch this wire either. If the wiring is faulty it may be carrying the same electricity as the live wire.

Why would a light switch have 3 black wires?

If the light turns on, the second black wire you connected to the switch is the switch feed and the unconnected black wire is the feed to the other loads. If the light doesn't turn on, then it's the other way around: the connected wire feeds the other loads and the disconnected wire is the light feed.

Why does light switch have 2 black wires?

The bare or green-wrapped ground wires serve as a backup to divert the power safely away in case of an electrical fault. In most cases, two black wires will be attached to the switch's two terminal screws.

How do I know which wire is neutral?

Most likely the neutral wire is white and the hot wire is red or black, but test to make sure. Identify the neutral wire in the fixture by looking at the wires. In most modern fixtures the neutral wire will be white and the hot wire is red or black. In some types of fixtures, both wires will be the same color.

How do you split a light switch into two?

2 Answers
  1. Get a 2-gang box to replace your existing 1-gang box.
  2. Get a new switch.
  3. Remove your existing box and install the 2-gang box in its place.
  4. Run your supply hot wire to both switches.
  5. Connect the light/fan hot wire to one switch and the exterior light to the other.
  6. Join all neutrals and ground wires.

Can I add a light to an existing switch?


You can usually install a light fixture between an existing one and the switch by cutting the cable to the existing fixture at the location of the new one, inserting the ends of the cable into the electrical box for the new fixture and pigtailing the new fixture onto these wires.