3 way light switching new cable colours 3 way light switch old cable colours 3 way light switch using a two wire control. This is the first method to make a 2 way switching connection this is the old method.

2 Way Switching Diywiki
Old 2 way light switch wiring. A commonc l1 and l2. This arrangement is often found in stairways with one switch upstairs and one switch downstairs or in long hallways with a switch at either end. 3 way switch schematic wiring diagram. Student training aid for the connections when the feed is taken directly to the switch 2 plate method and also 2 way switching. Video explains the connection required within switches. It is a standard single pole switch with three terminals.
When wiring a 2 way switch circuit all youre really doing is controlling the power flow switching offon to the load a light lamp outlet ceiling fan etc now a typical circuit will contain a 3 wire cable known as romex. Connecting wires how to connect 2 way switch wiring using two wire control. We have a double switch for our bathroom that controls the extractor fan left switch of 2 and the bathroom lights right switch of 2. 2 way light switch 3 wire system new harmonised cable colours 2 way switch 3 wire system old cable colours 2 way switch two wire control three way switching. We need to replace it as its bust basically. To switch from two locations youll need 2 two way switches and wire them together in a particular way.
Two very old three way switches are depicted in the photo above. Before proceeding an important component called a two way light switch is the main element of the 2 way switching irrespective of the type of wiring used. This is very useful in a number places particularly hallways and stairs. 2 way switching means having two or more switches in different locations to control one lampthey are wired so that operation of either switch will control the light. If you are going to install a new one then go for three wire control method. A two way switch has 3 terminals.
Two very old three way switches. Below is a simple 3 way schematic that can be applied to all three way electrical light switch connections. Anyway i buy a double 2 way switch to replace it picture below anyway i take off the. This is only a wiring schematic and not the actual wiring method used for 3 way switch installations. Ive attached a few diagrams of the existing wiring in the hall and living room. The three terminals are usually named com l1 and l2 but sometimes com 1 way and 2 way are also used.
Im changing the light switches only to put some new ones on but not sure where the wires from the old switch labelled a a1 b b1 etc should connect to the new switch which just has l l1 and l2. Two way switching allows you to control a light from two locations. Wiring a two way switch.