Light Switch Wiring Common
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That s why people sometimes refer to it as common.
Light switch wiring common. Why the light switches need to live on the black wire. For those of us using led fluorescent or some other energy efficient bulbs under 20w a neutral is required. A little about the light switch the common single pole switch is one of the simplest electrical devices that you have in your home. The neutral wire from the source is spliced to the white cable wire and continues on to the light.
You should also see a green. All they do is interrupt the flow of electricity to a device like a light fixture ceiling fan or a switched receptacle by making closing or turning on or breaking opening or shutting off a circuit. When you re wiring decorative light switches such as chrome or stainless steel etc you ll find that the switch will also have an l2 terminal which means it s a two way switch. Yes there are a few read very very very few switches that don t require a neutral but those will limit you to incandescent only.
The simplest and most common light switch is actually referred to by hardware dealers and electricians as a single pole light switch with a single pole light switch flipping the toggle or paddle up completes the circuit turning lights or appliances on and flipping it down breaks the circuit turning lights or receptacles off. In theory if you break the circuit on either wire it will stop the flow of electricity. A fan or other appliance. In a 3 way configuration the line wire should be connected to the common terminal of the brilliant control.
This is the wire that connects your switch to your light bulb or other load ie. If you only have one cable in the device box then the switch outlet is likely wired as a switch leg drop. In practice you need to put light switches on the hot black wire rather than the white neutral wire. The most common light switch is the single pole light switch.
These are called terminal screws. The source hot wire is connected to a switch terminal and the other terminal is connected to the black cable wire. The next most common is the three way switch which is commonly used to control a light fixture from two different locations. You should see two black wires each connecting to a different screw on the right side of the switch.
At the light the white wire connects to the neutral terminal and the black wire connects to the hot. The other terminal is marked as l1 and is the output to the light fixture. The reason is because all of the white wires connect. The 1 pole light switch will have two terminals on it and possibly a third terminal that is a ground connection.
Observe the layout of the wires. The common is for the live wire that supplies the input voltage to the switch.
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