Replacing metal light switch with plastic one, no earth socket?

Discussion in 'General Chat' started by meansizzler, Dec 24, 2011.

  1. meansizzler

    meansizzler
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    Am replacing a metal light switch for plastic one, from the wall have three cables, red (live) black (Neutral) and Green/Yellow ( Earth)

    On the switch have only 2 holes, COM and 1WAY, I assume RED wire goes in COM and Black Wire Goes in 1WAY, but what do I do with earth wire?, just put it in a block out of the way?
     
  2. aVdub

    aVdub
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    Installing a Fluorescent Tube Fitting and Switch | Electrics | Diy Fix It

    Mine are earthed on the back plate.
     
  3. leo79

    leo79
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    Should be a brass lug on the back box, connect it into that.
     
  4. Sparky83

    Sparky83
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    If there is no earth terminal on the switch there maybe a terminal on the metal box in the wall?
     
  5. niceguy235uk

    niceguy235uk
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    If you are replacing a metal switch with a plastic one, if there is a metal back box, then this must be earthed using the earth wire.

    If its a plastic dry lining box, then put a connector on it.
     
  6. Poward

    Poward
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    I was replacing the metal switch for a plastic and as the earth screw on the metal back plate was not turning I sprayed with wd40. I then checked how safe that would be if I turned it back on and people are saying not to use wd40 with electrical connections. Am I safe to turn back on if I let it dry out??
     
  7. noiseboy72

    noiseboy72
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    WD40 is petroleum based, so wait until it dries off a bit, just in case.

    For future reference, if the screw is jammed, just cut the cable and then re-do the connection. It's only a case of cutting back the insulation.
     
  8. Poward

    Poward
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    Thanks for getting back to me. Sorted in end just gave it half hour to dry and all good.
     

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