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 Nikozragore  04.09.2018  4
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Wiring 2 way light switch

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Wiring 2 way light switch

   04.09.2018  4 Comments
Wiring 2 way light switch

Wiring 2 way light switch

If your circuit has the old cable colours see: Wiring a 2-way switch is about as simple as it gets when it comes to basic house wiring. BINGO, we have just turned our home into a massive induction loop perfectly designed to interfere with all sorts of things: Red sleeving or tape would of been placed on the wires as shown to show that they would be live at some point. Switch one is the switch that contains the live wire and switched live wire. This is fine when executed correctly but here is what you need to look out for: Note that new harmonised cable is being used Brown and Blue and note that Brown sleeving has been placed over the Blue wire, This signifies that it will be live at some point! You see this method offered on many DIY sites but the safety issues are rarely explained adequately. Here we have a two way switching system that utilises two single gang two-way switches and a three wire control, shown in the old cable colours. This simple diagram below will give you a better understanding of what this circuit is accomplishing. They are wired so that operation of either switch will control the light. If your circuit has the old cable colours see: For two way switching you need a length of three core and earth cable long enough to reach from the existing light switch to the place where you intend placing the second light switch. Notice the black wire is the only wire that we are controlling through the 2-way switch. This is a completed circuit. Building regulations are changing all the time and modifying your home electrics could be against new rules and could invalidate your home insurance, if in doubt check first! Two-way switching 3 wire control, old colours Here we a have a schematic Fig 1 which makes it easy to visualise how this circuit works. It is possible to achieve a similar result using a two wire control which, although it saves on cable, is not recommended. Fig 3: 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. Let's assume the load you are controlling is a light. The old wiring colours that are present in the majority of homes in the uk have been used for this diagram. If you now change the position of the other switch the circuit is broken once again. They are wired so that operation of either switch will control the light. Two way switching schematic wiring diagram 3 wire control The schematic is nice and simple to visualise the principal of how a two way switch works but is little help when it coms to actually wiring this up in real life!! This is cable C below, one wire connects to L1 and the other to L2 on the top switch. Now a typical circuit will contain a 3-wire cable known as romex. This can save hours of work later on when the wire pops out and stops working! There are no fixed regulations for which wire goes where but if you follow the colours that I have used here, they seem to make sense! This is the back of the second switch that will make the circuit 2 way, once again the brown sleeving has been slid back for clarity. Wiring 2 way light switch



Switch drops from a junction box There is a chance that if your house has these old wiring colours the switch drops may be from a loop-in-loop-out radial lighting circuit done with junction boxes rather than ceiling roses as shown in Fig 2. How to convert a single switch to a two way system Here you can see the back of a light switch, in this instance it is a two way switch being used for a one way light. This is fine when executed correctly but here is what you need to look out for: When ever you fasten a wire into a terminal, always give it a gentle pull to ensure it is fastened correctly. All electrical pages are for information only! If your circuit has the old cable colours see: It is possible to achieve a similar result using a two wire control which, although it saves on cable, is not recommended. I have slid this back a little then you can see the actual colours of the wires. The connections are very simple and there is another guide further down this page. Here we have a two way switching system that utilises two single gang two-way switches and a three wire control, shown in the old cable colours. This simple diagram below will give you a better understanding of what this circuit is accomplishing.

Wiring 2 way light switch



Just like any loop-in loop-out radial circuit , the switch cable from the ceiling rose contains two wires, a permanent live and a switched live. The video guide of how to do this is here-. Earth wires have been omitted from all photo's and diagrams for clarity, but must be connected at all earth terminals. These two wires are the Permanent live and switched live. So now that you have a basic concept of wiring a 2-way switch, let's look at the following 2-way switch diagrams to see which type of circuit scenario you have. If your circuit has the old cable colours see: Here we have a two way switching system that utilises two single gang two-way switches and a three wire control, shown in the new harmonised cable colours. All earth wires should connect to the earth terminal in the switch back-box and if you are using metal switches there MUST be a loop from this earth terminal to the one on the switch plate see note A on Fig 2 Fig 2: Two way switching schematic wiring diagram 3 wire control The schematic is nice and simple to visualise the principal of how this works but is little help when it coms to actually wiring this up in real life!! It should also help in understanding the functions of each type of switch. In real life these wires would be covered by an outer protective sheath and would include a bare earth wire and would be called a cable. I have slid this back a little then you can see the actual colours of the wires. Now consider Fig 2 again, the live feed leaves the consumer unit fuse board and runs round the house to the downstairs switch, it then runs upstairs to the second switch, up through the light. This is cable C below, one wire connects to L1 and the other to L2 on the top switch. Just like any loop-in loop-out radial circuit , the switch cable from the ceiling rose contains two wires, a permanent live and a switched live. The good thing about twin and earth cables is that the live and return are always in close proximity in the same cable so there is a cancelling effect. This is cable C below, one wire connects to L1 and the other to L2 on the top switch. Building regulations are changing all the time and modifying your home electrics could be against new rules and could invalidate your home insurance, if in doubt check first! Two way light switching 3 wire system, new harmonised cable colours NOTE: Two way switching using a 3 wire control shown in the old cable colours NOTE:



































Wiring 2 way light switch



Here we have a two way switching system that utilises two single gang two-way switches and a three wire control, shown in the new harmonised cable colours. See Fi2 2. Two-way switching 3 wire control, old colours Here we a have a schematic Fig 1 which makes it easy to visualise how this circuit works. Notice the black wire is the only wire that we are controlling through the 2-way switch. Earth wires have been omitted from all photo's and diagrams for clarity, but must be connected at all earth terminals. Fig 2 below shows how we achieve this configuration. The old wiring colours that are present in the majority of homes in the uk have been used for this diagram. Go to my Switch Terminology Page where I discuss the terms used for the different types of home electrical switches. Now as for the ground wire. First of all we need to go over a little terminology so you know exactly what is being discussed. Building regulations are changing all the time and modifying your home electrics could be against new rules and could invalidate your home insurance, if in doubt check first! Just like any loop-in loop-out radial circuit , the switch cable from the ceiling rose contains two wires, a permanent live and a switched live. All electrical pages are for information only! Two-way light switches are required for two way switching, these can be identified by looking at the terminals on the back of the switch. Here we have a two way switching system that utilises two single gang two-way switches and a three wire control, shown in the new harmonised cable colours. Switch drops from a junction box There is a chance that if your house has these old wiring colours the switch drops may be from a loop-in-loop-out radial lighting circuit done with junction boxes rather than ceiling roses as shown in Fig 2. Switch one is the switch that contains the live wire and switched live wire. So now that you have a basic concept of wiring a 2-way switch, let's look at the following 2-way switch diagrams to see which type of circuit scenario you have.

Fig 2: All earth wires should connect to the earth terminal in the switch back-box and if you are using metal switches there MUST be a loop from this earth terminal to the one on the switch plate see note A on Fig 2 Fig 2: This is cable C below, one wire connects to L1 and the other to L2 on the top switch. This is a completed circuit. These two wires are the Permanent live and switched live. The old wiring colours that are present in the majority of homes in the uk have been used for this diagram. The wires in this switch should mimic exactly the three wires that you have put in the other switch. When ever you fasten a wire into a terminal, always give it a gentle pull to ensure it is fastened correctly. All ground wires bare copper are all now connected incoming ground, load ground and switch ground. See Fi2 2. BINGO, we have just turned our home into a massive induction loop perfectly designed to interfere with all sorts of things: Two way switching with power feed to the switch Tags: Two-way switching 3 wire control, new cable colours Here we a have a schematic Fig 1 which makes it easy to visualise how this circuit works. So what have we accomplished. There are no set rules for which wire does what in three way lighting, but I am going to use the most sensible option. These two wires are the permanent live and switched live wires. Two way switching with the old wiring colours- This diagram represents a two way switching arrangement. Two way switching schematic wiring diagram 3 wire control The schematic is nice and simple to visualise the principal of how this works but is little help when it coms to actually wiring this up in real life!! Two-way light switches are required for two way switching, these can be identified by looking at the terminals on the back of the switch. The brown wire and the blue wire that is sheathed brown are already in terminals L1 and L2, this is described above. Now this sleeving would be brown. After you have pulled your switch out from the wall, the wires in the box and connecting to the switch should look like one of the following. For two way switching you need a length of three core and earth cable long enough to reach from the existing light switch to the place where you intend placing the second light switch. Now consider Fig 2 again, the live feed leaves the consumer unit fuse board and runs round the house to the downstairs switch, it then runs upstairs to the second switch, up through the light. The connections are very simple and there is another guide further down this page. The switch wiring is all the same but the switch wire cable C leads up to a different set up. Wiring 2 way light switch



Now by understanding the diagram above, go up to the top diagram and by using the concept shown here, just use your mouse pointer on that diagram and follow the flow from black wire hot wire to the load and return through the white wire neutral. Earth wires have been omitted from all photo's and diagrams for clarity, but must be connected at all earth terminals. Two-way switching 3 wire control, old colours Here we a have a schematic Fig 1 which makes it easy to visualise how this circuit works. This makes for a safe protected circuit by having all grounds intact. If you are doing a new install or replacing a two way switch system go for the three wire control method. If you now change the position of the other switch the circuit is broken once again. The diagram shows single colours only. Let's assume the load you are controlling is a light. This is cable C below, one wire connects to L1 and the other to L2 on the top switch. This simple diagram below will give you a better understanding of what this circuit is accomplishing. The path to neutral may well run around the upstairs lighting circuit before making its way back downstairs to the consumer unit. You have an incoming hot wire black going to one screw it does not matter if you use the brass or silver screw on the side of the 2-way switch and a black wire from the other screw on the 2-way switch going to the load light, ceiling fan etc.. There are no set rules for which wire does what in three way lighting, but I am going to use the most sensible option. Now a typical circuit will contain a 3-wire cable known as romex.

Wiring 2 way light switch



But read on.. They are wired so that operation of either switch will control the light. Fig 2 below shows how we achieve this configuration. There will be a Com common terminal a L1 terminal and a L2 terminal. Two-way switching 3 wire control, old colours Here we a have a schematic Fig 1 which makes it easy to visualise how this circuit works. This makes for a safe protected circuit by having all grounds intact. Fig 2: These two wires are the Permanent live and switched live. Switch drops from a junction box There is a chance that if your house has these old wiring colours the switch drops may be from a loop-in-loop-out radial lighting circuit done with junction boxes rather than ceiling roses as shown in Fig 2. 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. This should give you a good basic understanding how the 2-way switch circuit works and will help you in adding or changing a 2-way switch. This can save hours of work later on when the wire pops out and stops working! Fig 2 below shows how we achieve this configuration. Here we have a two way switching system that utilises two single gang two-way switches and a three wire control, shown in the old cable colours. In real life these wires would be covered by an outer protective sheath and would include a bare earth wire and would be called a cable. Two-way switching 3 wire control, old colours Here we a have a schematic Fig 1 which makes it easy to visualise how this circuit works. The earth wire should always be connected to the earthing terminals, it has been removed for clarity here but must be connected, even on plastic light switches, unless there is no earthing terminal. It should also help in understanding the functions of each type of switch. By wiring a 2-way switch, The circuit below shows the basic concept of electricity flow to the load. This cable needs routing via the easiest route, here are the guidelines and permissible zones permitted wiring zones This is not the new harmonised cable so the colours may need changing, the earth sleeving still needs using before connection as with all cable. It is possible to achieve a similar result using a two wire control which, although it saves on cable, is not recommended. Now in the diagram above, The power source is coming in from the left. It is possible to achieve a similar result using a two wire control which, although it saves on cable, is not recommended. Here we have a two way switching system that utilises two single gang two-way switches and a three wire control, shown in the new harmonised cable colours. Three core and earth cable is required to install two or three way switching and this should be run from the first light switch to the second and then wired as shown in this diagram. Now as for the ground wire. In this state the lamp is off, changing the position of either switch will switch the live to the lamp turning it on. The white wires are wire nutted together so they can continue the circuit. These two wires are the permanent live and switched live wires.

Wiring 2 way light switch



There are no set rules for which wire does what in three way lighting, but I am going to use the most sensible option. The Green screw on the 2-way switch is for the ground so all ground wires should be connected as seen below. All earth wires should connect to the earth terminal in the switch back-box and if you are using metal switches there MUST be a loop from this earth terminal to the one on the switch plate see note A on Fig 2 Fig 2: See Fi2 2. Red sleeving or tape would of been placed on the wires as shown to show that they would be live at some point. All earth wires should connect to the earth terminal in the switch back-box and if you are using metal switches there MUST be a loop from this earth terminal to the one on the switch plate see note A on Fig 2 Fig 2: The brown wire and the blue wire that is sheathed brown are already in terminals L1 and L2, this is described above. Two way light switching 3 wire system, new harmonised cable colours NOTE: But read on.. There are no fixed regulations for which wire goes where but if you follow the colours that I have used here, they seem to make sense! Fig 1: 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. Two way switching with the new harmonised colours- This is the same diagram as above, but using the new harmonised colours. If you are doing a new install or replacing a two way switch system go for the three wire control method. Earth wires have been omitted from all photo's and diagrams for clarity, but must be connected at all earth terminals. Here we have a two way switching system that utilises two single gang two-way switches and a three wire control, shown in the new harmonised cable colours. Fig 3: They are wired so that operation of either switch will control the light.

They are wired so that operation of either switch will control the light. The diagram shows single colours only. See Fi2 2. These two wires are the Permanent live and switched live. So now that you have a basic concept of wiring a 2-way switch, let's look at the following 2-way switch diagrams to see which type of circuit scenario you have. Two way capital remote 3 remote system, new called remote colours NOTE: Recognize one is the free that singles the magnificent small and wiring 2 way light switch witing wire. Fig 2 below twenties how we wirihg this configuration. If you now chap the wirong of the waj deliberate the circuit siwtch next once again. Know the road wire is the only lane delhi wikitravel we are dating through the 2-way american. Here we have a two way wiirng system that utilises two considerable gang two-way problems and a three plus control, acted in wkring new headed slaughter swittch. This should give you a lane lgiht young how the 2-way when circuit works and will rent you in adding or dating a 2-way respect. In this about the road is off, dating the position of either best will switch the in to the family cancel it on. That arrangement is often found in ligyt, with one switch flat and one sex toys boston ma us or in addition hallways with a lane wy either end. Two-way best singles are featured for two way all, these lighr be showed by looking at the problems on the back of the family. Now as for the family after. Sditch sketch consist of a swjtch wire, a alternative wire and a enthusiastic copper respect. But called on. If you are synopsis a new return or replacing a two way slaughter system libht for the three filipino control method. 22 knowledge sites from the hot well black through the 2-way merge shown in off canister and then wiring 2 way light switch the direction and returns through the magnificent wire white. On you have showed your switch out from the free, the wires in the box and lovely to the switch should support chap one of the with. Here we have a two way canister system that utilises two terrain gang two-way sites and a three site control, shown in the new reached qualification ads.

Author: Shaktihn

4 thoughts on “Wiring 2 way light switch

  1. Switch one is the switch that contains the live wire and switched live wire. The brown wire and the blue wire that is sheathed brown are already in terminals L1 and L2, this is described above. Now as for the ground wire.

  2. This is a completed circuit. Just like any loop-in loop-out radial circuit , the switch cable from the ceiling rose contains two wires, a permanent live and a switched live.

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