These control a light from two or three switch locations such as at the top and bottom of a stairwell at either end of a hallway or in a large room with multiple entrances.
Single pole double light switch wiring common.
It has four terminals.
The source is at sw1 and the hot wire is connected to one of the terminals there.
For example you might want to turn on a bathroom light separately from the ceiling fan.
The main difference is that a double pole switch has four hot brass terminals instead of two plus a ground terminal.
Buy a single pole switch if one switch controls the lights or a three way if you have two switches controlling the same lights.
Though it is not difficult to wire a double switch careful attention to safety is crucial to prevent injury.
Wiring a switch to a wall outlet.
A double pole switch is what you need to control a 240 volt device because 240 volt circuits have two hot wires.
In typical home wiring the hot wire from the electrical supply connects to one terminal and the hot wire to the fixture connects to the other.
Here a receptacle outlet is controlled with a single pole switch.
A three way switch has three terminals.
Armed with this information you should now be able to clearly identify the type of switch you are working with and the wiring diagram that will help you complete your home wiring project.
The difference between a single and double pole switch is that the latter controls two circuits at the same time.
Like the single pole switch a double pole switch has on off markings and controls a device or equipment from one location.
The double pole switch is commonly used in industrial applications but can be found in some home wiring systems.
The double pole or 2 pole switch is essentially two single pole switches operated by one toggle.
Add up the wattage of the bulbs in all the fixtures the switch controls to make sure it falls within the switch rating listed on the package or instructions.
To wire a double switch you ll need to cut the power remove the old switch then feed and connect the wires into the double switch fixture.
A four way has four.
Two for incoming hots and two for outgoing hots.
Each side is an independent light switch.
When you examine the switch you ll see that it has two brass terminals and a green ground terminal.
In this diagram 2 wire cable runs between sw1 and the outlet.