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Discuss light switch metal faceplate to plastic casing in the Electrical Forum area at ElectrciansForums.co.uk.

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  1. Mitesh14

    Mitesh14 New EF Member

    Location:
    London
    Hi Guys,

    First time here so sorry for posting the most basic of questions.

    I have just moved into an old central London building and want to replace my ancient single plastic light switches with modern nickel metal ones from B&Q.

    I isolated the power to the flat and opened up the switch and the faceplate is plastic and the casing is plastic so wondering if having plastic casing to metal faceplate can be done.

    I have a red and black/brown wire running from the casing wired to the switch but the green wire which I'm presuming is earth is screwed into the casing.

    I have uploaded some pics of the current wiring the way it is and the back of the new switch for your ease.

    What would I need to do here to have the metal faceplate to plastic casing and how would I need to run the earth wire and does it need to be screwed onto the metal switch.

    I look forward to hearing your thoughts.

    Thanks,

    Mitesh

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  2. Leesparkykent

    Leesparkykent You Rock Gmes Staff Member Trusted Advisor

    Location:
    Kent
    The back box is metal not plastic.
     
  3. Midwest

    Midwest Electrician's Arms

    Location:
    Oxfordshire
    The new metal switch needs to be earthed, the terminal on the left in your last picture, that is attached to the faceplate of the new switch, is the earth terminal.

    However, OP it may be a good idea to have these switches installed by a competent qualified electrician.
     
    DPG and Andy78 like this.
  4. Andy78

    Andy78 Trusted Advisor

    Location:
    Kingston upon Hull
    Agreed. The earth may be visually present, but verification of continuity is always a good idea.
     
    Midwest likes this.
  5. Rpa07

    Rpa07 1000 posts only 44653 behind Telectrix! Electrician's Arms

    Location:
    Bristol
    That's got to be the record for number of the same photo! Mitesh14 you win the prize which consists of 12cm of 1mm green and yellow single and an eyelet crimp! Enjoy!
    Of the advice given I would recommend you get a qualified to do a quick check on CPC continuity and either flylead or depend on metaL 3.5s to the metal back box. The importance IS knowing that the CPC does what it is supposed to do.
    CPC ( continuous protective conductor)
     
    DPG likes this.
  6. Andy78

    Andy78 Trusted Advisor

    Location:
    Kingston upon Hull
    Circuit, not continuous. Although it should be continuous in nature if not name.
     
    DPG, D00DY_T00DY and Rpa07 like this.
  7. Rpa07

    Rpa07 1000 posts only 44653 behind Telectrix! Electrician's Arms

    Location:
    Bristol
    That's it, I'm giving up - if I can't get that right . . . and I only did that for the OP! Whilst we are onto acronyms, what is IIRC when someone posts? It took me ages to work out AFAIK but IIRC has got me!
    And what does KMF in a switch fuse stand for.
    Thanks in advance.
     
    DPG likes this.
  8. Wilko

    Wilko Gorillas are Great Electrician's Arms

    Location:
    Berkshire
    If I recall correctly ... it's time for a cuppa. My favourite is the special high intensity training scheme :)
     
    Rpa07 and westward10 like this.
  9. Midwest

    Midwest Electrician's Arms

    Location:
    Oxfordshire

    IIRC, if I remember correctly, I googled it :). KMF switch fuse, means kiss my face switch fuse, used if you have just beaten someone. No idea what that's got to do with electrics :rolleyes:

    Quote by Lucien Nunes;

    It's a manufacturer's code used as a generic name. For over half a century the MEM catalogue numbers for this popular style of switchfuse have been xxKMF or xxxKMF. So as Hoover came to mean vacuum cleaner, KMF is used to mean an all-insulated cartridge switchfuse

    What is a KMF please?...Was reading about switch fuses when extending tails. Thanks - http://www.electriciansforums.co.uk/threads/what-is-a-kmf-please-was-reading-about-switch-fuses-when-extending-tails-thanks.91431/
     
    DPG, Des 56, Andy78 and 2 others like this.
  10. Rpa07

    Rpa07 1000 posts only 44653 behind Telectrix! Electrician's Arms

    Location:
    Bristol
    Where is that "THANKS" button when you need it!
     
  11. Andy78

    Andy78 Trusted Advisor

    Location:
    Kingston upon Hull

    Yep it's a bit like the way 16mmx25mm minitrunking gets called YT2 or MT2 after the MK and Marshall Tufflex product codes.
     
    Rpa07 likes this.
  12. telectrix

    telectrix Scouser and Proud of It Trusted Advisor

    carefull now. you'll be calling IR testing meggering next. :(
     
    rizla1990, seltechpc, DPG and 3 others like this.
  13. Des 56

    Des 56 Trusted Advisor

    Location:
    Gliese 581C
    Was the KMF question written with a Biro
     
    Rpa07 likes this.
  14. Rpa07

    Rpa07 1000 posts only 44653 behind Telectrix! Electrician's Arms

    Location:
    Bristol
    i've noticed in the USB double socket outlets that it advises not to megger the circuit as it could damage - I guess no one Told the Chinese that megger is a brand name.
     
    DPG likes this.
  15. Andy78

    Andy78 Trusted Advisor

    Location:
    Kingston upon Hull
    I've seen it written as "mega test" before in accessory instructions
     
    Wilko and Rpa07 like this.
  16. D00DY_T00DY

    D00DY_T00DY Trainee Access

    Location:
    Bradford, UK
    Just become a plumber. Might have a chance then
     
    Rpa07 likes this.
  17. Leader

    Leader Regular EF Member

    Location:
    Brighton
    I've just bought a new boiler which refers to meggering the circuit. I think it was the boiler, something anyway. I was stumped as I don't have a megger tester . I could Fluke it?
     
  18. D00DY_T00DY

    D00DY_T00DY Trainee Access

    Location:
    Bradford, UK
    Must be a megger. Any other brand breaks it. :/ made that mistake before
     
    Leader likes this.
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