The primary power source (the incoming power) goes to the light fitting first, then the live is sent to the switch, and finally, the switched live (the live that is made and broken) is sent back to the light. Traditionally in the UK, this is wired such that the live (brown) and neutral (blue) wires (old houses may have red and black cables, respectively). If it’s the light-first-wiring, then no.įor a traditional switch to turn a light on and off, it needs to make and break the circuit. To correct this, it takes a few minutes to wire correctly. It may mean your switch will work upside down which some folks would find irritating. Yes and no, if you wire both switches the same, it does not matter where the wires go, provided it’s the same as the other switch. Does it matter which wire goes where on a light switch? Using the lighting circuit could use the cable to its maximum capacity. The lighting cable usually is 1.5 mm, and the socket cable is 2.5 mm, so it can carry more amps for your appliance. The lightning cable is insufficient to carry a 13 amp per outlet socket. Can you wire a plug socket from a light switch in the UK? You will see L1 at the bottom of the switch this is for the output from the light switch. The common is for the live feed, the brown wire. When you remove the faceplate from the switch, you will see that COM has the letter C at the top of the switch. What is the common wire on a 2-way switch? If you don’t feel confident about wiring switches, you should call an electrician as switches can be wired incorrectly and still work, but they will generate heat and may cause a fire. This configuration is mostly found in stairwells, so you can turn off the landing light and vice versa when you go to bed. The term 2 way in switching means you have two switches in two different locations to control one bulb. Two-way lighting switch 3 wire systemįrom this diagram, you can see that the wiring from the rose is much simpler and provides an effective way of switching. This is dangerous, so there is a simple way of wiring: a 2-way switch 3 wire system. The base of the stairs could be different from the top of the stairs. There is a possibility that the neutral terminations could come from other lighting circuits using this configuration. Cable saving is a hangover from the 2 world wars, and electrics have come a long way. Taking this method of wiring is referred to as the cable saving method. This switching combination is used in older homes and works well, but 3-way switches are preferred for new builds. The switch is now complete, as shown in the schematic. You will have two terminals on the base of each switch connecting terminals 1 to 1 and 2 to 2. Take your neutral (blue) wire to the common on your next switch and terminate. Now to wire a two-way switch, you will need to bring your common into one switch and terminate. Make sure the circuit is switched off before starting to terminate the connections.īring the neutral from the ceiling rose into the base of the switch and terminate the connection. Ok, you always bring your live wire (brown), also known as the common, into the top of the switch.
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