The l1 terminals of both the switches are connected to line or phase or live of the ac supply. If you are going to install a new one then go for three wire control methods.
To switch from two locations youll need 2 two way switches and wire them together in a particular way.
Wiring a double light switch 2 way.
How to wire 2 way light switch in this video we explain how two way switching works to connect a light fitting which is controlled with two light switches. The following is the simple schematic of a three wire 2 way switch wiring. The source is at sw1 and 2 wire cable runs from there to the fixtures. 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. The next length of the twinearth cable will run from the light to the first two way switch. The l2 terminals of both the switches are connected.
In position 2 when the switch is up or off com and l2 are connected together. The cable consist of a black wire a white wire and a bare copper wire. As you see in the 2 way switch diagram below you will find that the phase live is connected with the common of the first 2 way switch. This is the simplest arrangement. A two way switch has 3 terminals. Double switches sometimes called double pole allow you to separately control the power being sent to multiple places from the same switch.
Pin1 pin2 of the first switch are connected with the pin1 pin2 of the second switch respectively. One end of the bulb is connected with the common terminal of the second switch and another. 3 way light switch wiring 2 wire system this switch arrangement is basically two two way switches on a single face plate. This diagram illustrates wiring for one switch to control 2 or more lights. You can observe in the schematic that both the com terminals are connected together. The hot and neutral terminals on each fixture are spliced with a pigtail to the circuit wires which then continue on to the next light.
If done properly they. Wire them together in a particular way. This is the first method to make a 2 way switching connection this is the old method. A common c l1 and l2. Multiple light wiring diagram. Though it is not difficult to wire.
If you look inside an existing wired in two way switch you will see quite a few wires of differing colours. Black wire power or hot wire. The first way of wiring uses a couple of two way light switches with a 3 wire control. Those wires have just been used for convenience. This can be confusing. When wiring a 2 way switch circuit all you re really doing is controlling the power flow switching off on to the load a light lamp outlet ceiling fan etc now a typical circuit will contain a 3 wire cable known as romex.
Some brands of light switch may have slightly different labeling on the terminals such as c l1 l2 or even l1 l2 and l3. For example you might want to turn on a bathroom light separately from the ceiling fan. A double switch allows you to operate two lights or appliances from the same location. One thing to remember is that the wiriing on light switches is only switching the live wires not the neutral if you see black wires or blue wires attched to the switches these are not neutrals.