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How to wire 3 gang smart switch advice...

Discussion in 'Electrics UK' started by Jonathan Sherratt, 17 Apr 2019 at 6:08 PM.

  1. Jonathan Sherratt

    Jonathan Sherratt

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    Hi I've recently put 3 smart switches in my home as obviously have a neutral set up. I'm looking to put an extra 3 gang switch downstairs but the 3 switch is on a slightly more complicated loop system. Below is a picture of the wiring with labeling where the common, L1 and L2 wires go. Really wanted advice as to where to wire Live then L1, L2 and L3. Any help is gratefully appreciated...


    [​IMG]
     
  2. donrkebab

    donrkebab

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    COM are the live wires that are feeding in and out.
    the middle switch is a 2 way
    the two outside switches are 1 way.
     
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  3. EFLImpudence

    EFLImpudence

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    The switched live, to the light which the middle switch and another switch operate, will be at the other switch.

    You could rewire it but you will lose the two-way operation.
     
  4. ban-all-sheds

    ban-all-sheds

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    "Obviously"?


    There are no neutral conductors there.



    Please, please, please do not try to do this by blindly following instructions to put-this-wire-in-that-hole without any idea as to why. You should know what, and truly understand what, you are doing.
     
  5. Taylortwocities

    Taylortwocities

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    Lets see the instructions for wiring the new switch.
    Are there other wires in the back box? I see a yellow wire there, does it have a blue friend?
     
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  6. Jonathan Sherratt

    Jonathan Sherratt

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    Sorry should have added this picture... you cant see the neutral wires in the first picture as they are all in one connector in the back with a blue wire connected in the other side... The other ground wire attached to the metal light switch.

    20190418_130123.jpg
     
  7. Jonathan Sherratt

    Jonathan Sherratt

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    Here is a picture of the new switch...

    This is the switch for a 2 gang however it has the setup for a 3 way...


    20190418_131551.jpg
     
  8. EFLImpudence

    EFLImpudence

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    It has the set up for three gang.
    Three way in our language means one light able to be operated from three switches at different locations.
    Two way being from two switches at different locations.

    In your original picture the middle switch is wired for two way operation, so what have you done, or intending to do, at the other switch?

    You cannot use your new switches for two way operation.
     
  9. ban-all-sheds

    ban-all-sheds

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    How do you know that those black wires are neutrals?


    No, that's a 3-gang 1-way.
     
  10. donrkebab

    donrkebab

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    Please enlighten me - see what I did there - what else would they be?
     
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