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Single-pole switches are the most common light switches in a home. They have two screw terminals plus a ground screw. One screw terminal is for the "hot" wire that feeds the switch from the power source. The other terminal is for a second hot wire, called a switch leg, that runs only between the switch and the light fixture. The switch leg brings power to the fixture when the switch is turned on.How to Install a Light Switch
The other may be black, red, or white. One of these is the power feed, and one is the switch leg, but the switch terminals are interchangeable, so there is no need to identify which is which.
If there is a white wire connected to the switch, this is likely the switch leg; it should be labeled as "hot" with a band of electrical tape so it is not confused with a neutral were.
It is usually a good idea to put some black electrical tape around the nut to make Connect the "source" wire to the bottom terminal of the switch and the other.
If not, add a band of tape to the white wire. If there are other white wires in the box that are not connected to the switch, these are neutral wires and can be left as is.
To help guide you through wiring a light switch yourself, we wanted to highlight It protects from static build up and from electrical insulation failure, in short If connecting wires excites your happy place, the term “pigtail”. Unscrew the switch from the electrical box and pull it out with the wires still at once and possibly getting confused, unscrew and connect one wire at a time. It is very important to connect the ground wire to the switch as well. By wiring a 2-way switch, The circuit below shows the basic concept of electricity flow to the.
Inspect the end of each wire. Bend the end into a loop, using the wire strippers or needlenose pliers. Connect the ground wire to the green ground screw on the switch, tightening the screw firmly with a screwdriver.
Be sure that the open end of the loop is on the right side of the terminal screw so that when you tighten the screw clockwise, the screw makes the loop close a little tighter.
Gently tuck the wires into the box, then mount the switch to the box with its two screws. Reinstall the switch cover plate.
Restore power to the circuit by switching on the circuit breaker or reinstalling the fuse. Test the switch for proper operation.
How to Replace a Light Switch
SIngle-Pole Switch Wiring. If a light switch fails to function, it should be replaced.
Most modern switches have screw terminals on each side and may also have holes in the back to accept the end of the wire. You can easily loosen the screws on the side of the device with a standard screwdriver turning counterclockwisebut you may find getting the wires out of the back of the device tricky.
To remove these wires, insert the blade of a small screwdriver into the slot under the hole into which the wire is inserted and push in as you pull the wire loose. Pushing the blade of the screwdriver into the slot releases the grip on the inserted wire. Here are descriptions of the wires and where they go:.
Connect the ground to the green grounding screw or to a ground wire or grounded box. Next, learn the electrical panel myth you need to stop believing ASAP. Add an electrical box for the second three-way switch in the basement. Connect the wires to the new three-way switches with ground screws using one of the. Standard single-pole switches do not connect to neutral circuit wire. the switch leg; it should be labeled as "hot" with a band of electrical tape.
The white neutral wire connects to the silver screw, or you place it in the back wire hole on the same side of the device as the silver screw. It is usually a good idea to put some black electrical tape around the nut to make sure it doesn't come off.
These wires hold the power. Connect the "source" wire to the bottom terminal of the switch and the other black wire to the top terminal.
In this picture, you can see the strip gauge on the back of the switch. This gauge is when you want to use the "quick-connect" method when wiring a light switch.
Hook up electrical switch
Simply strip the wire to the length specified and push the wire into the hole. That's it. Simple, eh?
Turn the power back on and test your switch. Oh yes, I see the light!