## Why do I have a red and black wire on light switch?

When you see a red wire in a light switch box, it can mean two things. It could be there is (or once was) a three-way switch in play. Or it could be the red wire is the wire going to the fixture, and the black wires are the live wires.

## Can you combine red and black wires?

If the red and black wires are connected together already and energized, yes you can do that but you will need a pull chain light or a remote control, if they are not switch controlled.

What do you do with a red wire on a light switch?

If the wire still is hot, the wire is a hot wire that delivers electrical power to the branch circuit. If turning the switch off turns the wire off, the red wire delivers power from the light switch. Note: Never touch wires or their connection points while the circuit is energized.

What happens if red and black wires are switched?

If you switched the wires, what would happen? Red is positive charge, black is negative charge. If you aren’t running if you aren’t connected correctly.

### Why does my light switch have 2 red wires?

When a light is controlled from two locations, you need a switch called a 3-way. A basic 3-way switch has a black wire or connector, called a common, and two traveler wires, usually black, red or blue. The two travelers may be the same color or different colors, but the switch itself will usually be marked.

### What happens if red and black wires touch?

Whenever two wires are at different voltages, current will pass between them if they are connected. Your body can connect the wires if you touch both of them at the same time. Current will pass through your body. In most household wiring, the black wires and the red wires are at 120 volts.

How do you wire a switch with two black wires?

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Connect the top screw to the wire that feeds to the light. Connect the bottom screw to the hot wire. When you turn the power back on, and if you want to swap the direction of the switch (as in press down to turn off, or turn on), turn off the power and switch the two black wires.

How do you wire a black and red 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.

#### Can red and black wires be reversed?

When hot and neutral wires are flipped around, this happens. It’s usually easy to repair reversed polarity. The wire is usually black or red and can be white or green.

#### What are the red and black wires on a light switch?

The other is an extension of the hot to some other fixture or to one half of the switched outlet. The red is the switched hot. After removing the old switch, the preferred method is to join the two existing black wires together and to add a short additional black wire (called a pigtail).

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How do you wire a 3-way light switch with no ground?

If you have a ground wire, connect the ground wire to the green screw. If you don’t have a ground wire, leave the green screw unconnected. This is a typical wiring setup for a 3-way light switch with black, white, red, and ground wires. If it doesn’t work, switch the lower wires.

Where is the brass screw on a light switch?

This type of switch has two brass screws, usually on the bottom, and a copper or black screw on the top left. Ideally, the old switch is still there, so you can wire the new one up the same way as the old one.

## Where does the Red Wire go on an occupancy switch?

Nothing fancy, one switch, one light. So on an occupancy switch like the Enerlite HOSS that cares about which wire is live, the red wire in the switch box connects to the red wire on the switch.