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Bathroom pull switch puzzle

Discussion in 'Electrics UK' started by Guitarmaan, 3 Aug 2014.

  1. Guitarmaan

    Guitarmaan

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    Hi
    I attempted to swap over a bathroom pull switch because it was jamming. It's wiring looks like the first photo (not my own). But when I wired up the replacement switch it didn't work, and I don't understand why? I tried different wiring combinations and nothing worked. When I wired the old one back, it worked again (when not jamming). So the power and bulb etc all work. Is this new switch the wrong type or something?

    Original switch that jams


    New switch that doesn't work

     
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  3. RF Lighting

    RF Lighting

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    Looks like you've bought a double pole switch. If you use the two silver coloured terminals only and leave the two brass ones empty you should be ok.
     
  4. PrenticeBoyofDerry

    PrenticeBoyofDerry

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    As above, you have a double pole switch, so either connect live conductors across silver terminals or across brass ones, but not a combination of both.
     
  5. Guitarmaan

    Guitarmaan

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    Despite the photo making it appear there is silver and brass, it's actually all brass. The terminal pairs are marked supply and load.

    So I started with the two marked supply (near the sticker) L and N. That didn't work so I tried using the load pair. Again nothing. Then I used live in supply and neutral in load. Nothing. N in supply and L in load, nothing.

    I suppose I have to conclude the new switch is faulty?

    I had a thought on the old one though, and I suspect the spring has lost it's shape. That would explain it sticking and not clicking back into position. So maybe I'll replace the spring and see how that goes.
     
  6. conny

    conny

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    When you connected one to the load side did you connect the other to the supply side in line with the load one or diagonally opposite?
    Both leads should be in line with each other. i.e. both to the right of the switch, (1 load + 1 supply),or both tothe left in the same manner.
     
  7. RF Lighting

    RF Lighting

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    Connect to supply L and load L terminals.
     
  8. AndyPRK

    AndyPRK

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    As said you both L terminals.

    The old switch is probably full of plaster so just needs cleaning out.
     
  9. Guitarmaan

    Guitarmaan

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    Thank you guys!

    That must be the answer, because the only combination I didn't try was both L terminals load and supply.
     
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  11. PrenticeBoyofDerry

    PrenticeBoyofDerry

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  12. Guitarmaan

    Guitarmaan

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    Well, not really......

    I've never changed any electrical items before, and the part I bought didn't match the part already in place. So I had to make it up as I went.

    From a safety aspect maybe I was a stupid boy though. Messing with electricity when you don't know what you're doing isn't a great idea ;)

    Thanks again anyway, because I can confirm the light is now working perfectly :mrgreen:
     
  13. sparkwright

    sparkwright

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    He's only joking.

    Great pic and slogan by the way.

    If you don't know, you don't know.

    What can fool people who don't know about electrical installations is that at a light switch like yours, the switch is connected to a permanent live wire and a switched live wire.

    There is no live and neutral at the switch - just perm live and sw live.

    In other words, at a switch, a black or blue wire doesn't mean it's a neutral, chances are it's a live.

    Usually a light switch breaks just the live and not the neutral.
     
  14. securespark

    securespark

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    Quick!

    Hide from Ban.......
     
  15. ban-all-sheds

    ban-all-sheds

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    No - you have to conclude that you don't know anywhere near enough about what you think it's OK for you to fiddle with.

    And that you don't have the right tools either.

    Please take the time to learn about electrics - trying to do it without a full and genuine understanding of how things work is extremely foolish. Your lack of even the most basic knowledge, such as what a switch does or what the conductors at a light switch are, could in other circumstances have been catastrophic. This time all that went wrong was you couldn't get a simple light switch to work. Next time you might not be so lucky.
     
  16. ban-all-sheds

    ban-all-sheds

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    Not really... For what?

    For not knowing? No, of course not.

    For deciding that not knowing should not in any way be a reason not to do? A strong case.


    Do you really think that's a sensible basis on which to attempt electrical work?


    It's far worse than that. It can kill. Really, it can.
     
  17. ban-all-sheds

    ban-all-sheds

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    Indeed.

    But if you don't know then you don't fiddle with it - it really is that simple.
     
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