wiring lights in parallel with one switch diagram

Here we can see that both the switches are in the same state. That is, if both the switches are onor if both the switches are on, the light turns on.įig-3(b) shows the ‘On state’ of the circuit. The light turns on when the switches are in same state. As a result, the light remains off as shown in Fig-3(a). Because the COM terminal is connected to the L1 terminal which is marked as ‘a’ in switch-1.īut the COM terminal is connected to the L2 terminal which is marked as ‘d’ in switch-2. As you can see these terminals shows the connection options of the common to L1 or L2 terminals.įrom the diagram we can conclude that switch-1 & 2 are not in the same state.

To elaborate the matter I have marked the terminals of the switches in fig-3 as- a,b,c & d. That is, if one of the switches is off and the other is on, the light remains off. When Does The Light Stay Off?Īs said, the light stays off when the switches are in opposite state. Fig-3: Schematic diagram of a double 2 way switches connected to a light. And turns off when the switches are in the opposite state. When both the switches are in the same state the light turns on. And the common port of switch-2 is connected to the light. The common port of switch-1 is connected to the line current. How a double two-way switch works?Ī double two way switch is at first connected to each other in the way shown in fig-3. We can do it from any of the two switches. We do not need to move to both the switches to turn on or off the light. While a couple of two way switches relieves us from this problem.

That means we will have to go to both of the switches. We will have to turn on both the switches to turn on the light. Well, a couple of one way switches will serve up to a point but there will be a problem. You may think why am I not using a couple of one way switches? To control a light from two different places we need a couple of two-way switches. Why do I need to use a double two-way switch? Here in this article I am going to show you how it is done and the wiring system related to it. The advantage of a two way switch is it helps to switch an apparatus from two different locations by using a couple of such switches. What is the advantage of a two-way switch? The connector from the COM to L1 or L2 can change position according to the pressing of the switch. Fig 2: Schematic diagram of a two way switch

Wiring lights in parallel with one switch diagram