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 Post subject: Extra Light Switch
PostPosted: Mon Dec 04, 2017 10:14 pm 
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I am in the process of moving into a house which seems to have 2 wires in majority of the lights/ switches compared to 3 wires which i had in my more modern house. I am a bit lost as to how to add an extra light switch as the entire lighting circuits use a ceiling rose.

Any ideas how to add an extra light switch?

Is it as simple as using a 3 core cable and connecting it to all 3 inputs on one light switch and into another? + earth


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 Post subject: Re: Extra Light Switch
PostPosted: Mon Dec 04, 2017 10:23 pm 
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no at the switch you have the live in and the switched live out and no neutral
the black cable should have a red sleeve or tape at both ends to denote switched live

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 Post subject: Re: Extra Light Switch
PostPosted: Mon Dec 04, 2017 10:31 pm 
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big-all wrote:
no at the switch you have the live in and the switched live out and no neutral
the black cable should have a red sleeve or tape at both ends to denote switched live


no sleeve or tape at all but this does not surprise me.

So no connecting L1 to L1 on other switch and com to com on each with it earthed?


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 Post subject: Re: Extra Light Switch
PostPosted: Tue Dec 05, 2017 5:45 am 
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To add just another switch for the same light, you add a 3 core and earth to the existing switch (sorry big-all you are not right in this case, as there is no need for a neutral)
You also have to change the switches.

The existing switch will probably be 1 way, you need 2 way.

At each 2 way switch you connect One wire to each of the 3 terminals

eg.

Grey to L1
Black to L2
Brown to L3

or (Depending on what the switch terminals are called)

Grey to C
Black to L1
Brown to L2

Your existing red and black go in with the black and the brown

So you would end up with
two blacks.
brown and red.
grey on its own.


Not mentioned:

The earth connects just to the existing earth terminal as shown in your picture
Leccy off first

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 Post subject: Re: Extra Light Switch
PostPosted: Tue Dec 05, 2017 10:55 am 
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no problem i read it as power for another light :lol:

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 Post subject: Re: Extra Light Switch
PostPosted: Tue Dec 05, 2017 5:33 pm 
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thanks someone-else, i thought i needed 3 core but was not aware that i needed to change the switch but this isnt a problem


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