12 wire is bigger than 14 so nothing would happen, the bigger the wire the more current it can handle and the better it is.
To wire a 3-way switch using only 12-2 wire, connect the black (hot) wire from the power source to the common terminal of the first switch. Then, run a 12-2 cable to the second switch, connecting the two traveler terminals of the first switch to the two traveler terminals of the second switch using the black and red wires. Finally, connect the common terminal of the second switch to the light fixture, and ensure the white wire is properly connected as a neutral back to the fixture. Remember to use wire nuts and ensure proper grounding.
Yes, you can wire a three-way switch using 12-2 wire, which consists of two insulated conductors and a ground wire. In this setup, you would typically use one of the hot wires for the switch and the other for the traveler wires connecting the two switches. Ensure that the circuit is properly grounded and that you follow local electrical codes for safety. Always turn off the power before beginning any electrical work.
Traditionally in electircal wiring 12/3 would refer to the size or diameter of the wire being used. In this case it would be 12 gauge which in laymans terms is about the size of a thick pencil lead. The number 3 would indicate how many lead wires are available to be used to run current on them. Additionally to this there would always in any wire with this type of description has a ground wire in it which is not counted. So in fact there is 4 Four total wires in the casing. One White (Neutral - sends current back to the service panel) One Black (Hot - provides 110v of power) One Red (additional wire to run 110v or to run power to a light from a switch so you can turn the light on from two different ends of a room or staircase). One uncoated copper wire Ground (sometimes if it is coated it would be in green). The purpose of this type of wire as it refers to the 3 is that it gives you an extra wire to run to a switch or a seperate plug or to run two 110v wires inside the same casing to meet code on wiring 1 phase 220v wiring. In the case of wiring what they call a three-way light switch the power comes into the first switch and sent to the light, the red wire sends power from the first switch to the second switch, then the white is all connected for neutral. Without the Red wire sending power to the second switch the first switch would just simple turn off the power to the second switch and render it useless. Ever play switch tag to turn one on and leave it on so the other one works. Yeah that thing.
Traditionally in electircal wiring 12/3 would refer to the size or diameter of the wire being used. In this case it would be 12 gauge which in laymans terms is about the size of a thick pencil lead. The number 3 would indicate how many lead wires are available to be used to run current on them. Additionally to this there would always in any wire with this type of description has a ground wire in it which is not counted. So in fact there is 4 Four total wires in the casing. One White (Neutral - sends current back to the service panel) One Black (Hot - provides 110v of power) One Red (additional wire to run 110v or to run power to a light from a switch so you can turn the light on from two different ends of a room or staircase). One uncoated copper wire Ground (sometimes if it is coated it would be in green). The purpose of this type of wire as it refers to the 3 is that it gives you an extra wire to run to a switch or a seperate plug or to run two 110v wires inside the same casing to meet code on wiring 1 phase 220v wiring. In the case of wiring what they call a three-way light switch the power comes into the first switch and sent to the light, the red wire sends power from the first switch to the second switch, then the white is all connected for neutral. Without the Red wire sending power to the second switch the first switch would just simple turn off the power to the second switch and render it useless. Ever play switch tag to turn one on and leave it on so the other one works. Yeah that thing.
The line side is where the source of the voltage is connected. The load side is where the device being switched is attached. In the case of a light switch the line side would connect to the house power and the load side would be the bulb. The switch is usually inserted in the line carrying the load (or black wires). As it it common to use 12-2 wiring to run from the device being switched to a switch on the wall, the return wire can be colored white. A electrician places an identification on the wire to signal that it is a "hot wire" even though it is white. Typically the electrician will wrap the white wire with black tape for about 1 inch to indicate this. A white wire is normally considered to be neutral if it is not identified as a "hot or load wire".
No. The wire size is dependent on the circuit protection. If the circuit uses a 20 amp breaker you need to run 12 AWG wire on all devices connected to that circuit.
The two way switches work in pairs. We find most of them in our houses where the light bulb can be operated by two switches each at the far end to the other. Each switch consists of three terminals two of which are connected. When one switch is open and the other is closed then the bulb glows and viceversa
To properly wire a 3-way switch using 12-2 cable, you will need to connect the black wire to the common terminal on one switch, and the red and white wires to the traveler terminals on both switches. Make sure to follow the wiring diagram for 3-way switches to ensure proper functionality.
The easiest way would be to run a wire from a 12 volt source (battery) directly into it (they normally have a two wire plug). This will let you know if it's the fan or the switch is bad.
Bring power into the light switch box 12/2 or 14/2 wire depending on the existing wire. Make sure you use the exactly same size wire that is used on that circuit. If you do not know look at the breaker in the main panel that controls power to that circuit. 20 amp will be 12/2 wire and 15 amp will be 14/2 wire. Now run another wire from the switch box out to the outlet. Inside the switch box, strip both white wires back 3/4" and connect them together under a wire nut and push this back into the box. Connect the 2 ground wires together and then connect that to the ground screw on the switch. You now have 2 black wires left. Connect them to the 2 screws on the light switch. Does not matter which black wire you connect to which screw. At the outlet connect the ground wire to the green ground screw, black wire to copper screw, and white wire to silver screw. That outlet will now be controlled by the light switch.
12
To wire a 3-way switch with 12 2-wire to control a light fixture from two different locations, you will need to connect the wires in a specific way. The 12 2-wire should be used to connect the switches and the light fixture. Follow a wiring diagram for 3-way switches to properly connect the wires and ensure the switches work correctly to control the light from two different locations.