The source hot wire is connected to a switch terminal and the other terminal is connected to the black cable wire. Wiring a two way switch.
How To Replace A Light Switch Made Easy
Light switch wiring common uk. Wiring a 3 way light switch. Your house wiring works on the same principle just on a larger scale and at higher voltages. Two way switch uk light switch 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. A metal light switch must be earthed as seen below. The most common light switch is the single pole light switch. A commonc l1 and l2.
The common wire is a trick that saves wiring and simplifies electrical panel design. Wiring a single pole light switch here a single pole switch controls the power to a light fixture. If you recall your science classes in school you probably built simple circuits using a battery and a light bulb. The task of installing additional wiring for a light switch and new light fixture will depend on available access to the proposed location. The other terminal is marked as l1 and is the output to the light fixture. The l2 terminal is unused.
When youre wiring decorative light switches such as chrome or stainless steel etc youll find that the switch will also have an l2 terminal which means its a two way switch. The 1 pole light switch will have two terminals on it and possibly a third terminal that is a ground connection. Wiring a 3 way light switch is certainly more complicated than that of the more common single pole switch but you can figure it out if you follow our 3 way switch wiring diagram. Hiring a qualified electrician will ensure that the installation is performed correctly where the existing circuit wires will be identified and new circuit wiring will be extended to the new light switch. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. L1 is off when l2 is on and vice versa depending on the switch position.
The common is for the live wire that supplies the input voltage to the switch. If you only have one cable in the device box then the switch outlet is likely wired as a switch leg drop. A two way light switch can also be used in in place of a one way light switch in this instance the red wire from the feed cable is connected to the common c terminal and the red wire going to the light is connected to the l1 terminal. You can use a two way switch for one way switching. To switch from two locations youll need 2 two way switches and wire them together in a particular way. The source is at the switch and 2 wire cable runs from there to the light.
A two way switch has 3 terminals. Two way switching allows you to control a light from two locations. This is very useful in a number places particularly hallways and stairs.
Gallery of Light Switch Wiring Common Uk
