A two way light switch is a simple single pole changeover switch with three terminals. Just ignore the l2 terminal.
Old Cable Colours Pre 2004 In 2 Way Switching And A Feed Supply To A Switch For An Outside Light
Wiring 2 way light switch l1 l2 l3. When l1 is on l2 would be off. In one switch position the com terminal is connected to l1. But when i looked at the new dimmer switch id bought it had l1 l2 and a symbol i assume means common like two bits of wire twisted round each other. As there is no c on you new switch use l1 as the common so your red goes to l1 on one side and then links to l1 on the other switch. Some switches will actually come two way as standard for use. There are two wiring options for this.
Put your blue to l2 on one switch and your yellow to l2 on the other ideally your old swicth should have had the red and link into c and not the other colours but as its used as a one way switch it wouldnt have mattered. You can use a two way switch for one way switching. In the other switch position it changes over so that com is connected. A two way light switch has three terminals and is quite like a sigle way switch but now the off position can be utilised also. Some brands of switch may have slightly different labeling on the terminals such as c l1 l2 or even l1 l2 and l3. L1 is off when l2 is on and vice versa depending on the switch position.
This type of switch is used where two switches control the same light such as at the top and bottom of a stairway. Hi alli carefully labelled each wirepair of wires in the existing 10 year old double 2 way switch as l1 l2 and l3. When l1 is off l2 would be on. Wiring a two way switch. Two way switching means you can switch the same light fixture from two switches that are located in different sides of a room. A two way switch for switching a light from two different locations like in a hallway has a common c a l1 and an l2 terminal.
Some brands of switch may have slightly different labeling on the terminals such as c l1 l2 or even l1 l2 and l3. 2 way light switch wiring 3 wire system new cable colours 2 way light switching 3 wire system old cable. Two way switches have a com terminal as well as l1 and l2 terminals. This double switch is on. These are typically labelled com l1 and l2 some may label the l1 and l2 positions as 1 way and 2 way. 1 onoff switch will use l1 and either l2 or l3 swapping l2 and l3 will swap which way is on and which way is off so either l2 or l3 will be empty.
2 the two way switch will have a three core cable and the same colour needs to go to com or l1 if there is no com.
Gallery of Wiring 2 Way Light Switch L1 L2 L3
