Quick electrical / conduit question

Discussion in 'General Chat' started by jaipal2004, Dec 29, 2016.

  1. jaipal2004

    jaipal2004

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    Hi,

    just finishing up the re-purposing of a space into a utility room and have gone for the utilitarian look (visible copper and steel)

    I'm adding some lights and sockets and using metal conduit to do this....

    How do I terminate the 20mm metal conduit pipes with a light holder? Can't see anything other than plastic and that will look silly against the metal and copper.

    Ideally want to avoid spray painting plastic fittings etc and want a clean look.

    Screwfix / Amazon links would be greatly appreciated!

    thanks in advance
     
  2. maxwell

    maxwell
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  3. jaipal2004

    jaipal2004

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  4. wilbanat

    wilbanat
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    Beezer Box :smashin:
    Standard light fittings screw straight on (the holes line up)
     
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  5. MartinMiller

    MartinMiller
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    Could've wired the lights in bare copper micc cable
     
  6. jaipal2004

    jaipal2004

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    I presume I'd need to use the plastic fittings?
     
  7. wilbanat

    wilbanat
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    I don't follow, fittings for what ?
    Conduit > beezer box > light fitting
     
  8. jaipal2004

    jaipal2004

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    Sorry.... Should've explained that this is a new DIY foray for me.

    By light fitting, I write have to use one of these plastic ones? .....

    British General Batten Lamp Holder White
     
  9. wilbanat

    wilbanat
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    Oh I see, well yes that would work but sure there are some more in keeping with the look you are going with.
     
  10. jaipal2004

    jaipal2004

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    Thanks mate

    I'll check on a few other sites... Couldn't find anything on Screwfix as yet :/
     
  11. wilbanat

    wilbanat
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    These would work well
    upload_2016-12-29_21-20-1.jpeg
     
  12. jaipal2004

    jaipal2004

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    Great...... I'll check

    Thanks again!!
     
  13. Sonic67

    Sonic67
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    As above,

    box.jpg

    something like that.

    Then the light should attach to the two screw threads with the right screws.
     
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  14. wilbanat

    wilbanat
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    Search for Bulkhead light
     
  15. wilbanat

    wilbanat
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    M4's I believe.
     
  16. sparkie1984

    sparkie1984
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    Exactly what I was about to say!

    I love doing metal conduit, if done right it's very neat and satisfying unlike that pvc crap!
     
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  17. jaipal2004

    jaipal2004

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    Started it today.... Very satisfying but a pain threading wire thru it if you have a few turns!

    Couldn't find any local shops selling metal look lamp holders so going for bulkhead lights as recommended above.

    Thanks for all the advice :)
     
  18. its_all_Greek

    its_all_Greek
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    Are you not using inspection bends, or inspection boxes anywhere?
     
  19. sparkie1984

    sparkie1984
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    Id recommend buying a draw tape. That's what is used to push through then tape the cables onto the end.

    Inspection bends are for amateurs :p (yes I know it's a DIY job)
     
  20. jaipal2004

    jaipal2004

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    Used inspection bends so I wouldn't need to use pipe benders but still difficult to pull the wire through - think the wire is possibly too thick and therefore not easily bent.

    Will use draw string next time - managed to do what I needed for the time being!

    Still struggling to find suitable bulkhead light from the likes of Screwfix / CEF etc or even a grey lamp holder for putting straight on the beezer box.

    Thanks again all!
     
  21. its_all_Greek

    its_all_Greek
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    I'm assuming your using singles and not twin and earth or flex?

    Are you staggering your cables or just taping them all together in a large bunch?

    i.e. Attach 1 to your draw tape, 5cm later connect your second to the first, then 5 cm later your third to your second etc.

    Have a look for Bulk head fittings, these will have a 20mm knock out for Conduit
    [​IMG]
     
  22. sparkie1984

    sparkie1984
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    I would assume as it's DIY he's used twin and earth also make sure the conduit is earthed, being metal if a fault occurs it could become live
     
  23. its_all_Greek

    its_all_Greek
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    If it is T&E no wonder he's struggling, good shout with the earthing though
     
  24. sparkie1984

    sparkie1984
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    I may be mistaken but just thinking if it's a diy job he may not know about singles. Wouldn't want to be pulling much twin and earth round it
     
  25. jaipal2004

    jaipal2004

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    Yep... Using twin and earth and have been sure to earth correctly :)

    Ta
     
  26. jaipal2004

    jaipal2004

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    Singles?? Do tell..... :)
     
  27. sparkie1984

    sparkie1984
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    Generally when you wire circuits through conduit you use single cables, which is where the individual conductors are on their own (so you have a brown, blue and green/yellow cable one their own) due to the bending of the conduit and the cables rigidity it can be very difficult to pull a twin and earth cable through, as you've no doubt found out! :)

    It also offers the benefits of picking and choosing how many of what cable you need, for example in a multiple switch arrangement it makes wiring the switching far easier than having to drag multiple core cables between the switches. The thing is that to use singles the conduit has to terminate properly into an enclosure, due to the single insulation the cables cannot run "freely" like you could clip a twin and earth, you cannot with single cables.

    Whereas twin and earth has the benefit of insulated conductors and an additional layer of insulation over them all. (apart from the earth, which is why you put earth sleeving over it when your terminating it)
     
  28. jaipal2004

    jaipal2004

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    Makes sense. I should've guessed!! D'oh :)

    I presume I could've cheated and unsheathed the twin and earth giving me singles? Although I presume it can be purchased as such from Screwfix? What would I search for?

    Thanks again!
     
  29. sparkie1984

    sparkie1984
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    Problem with that is the earth would have no protection on it and putting earth sleeving on a long length of it would be a nightmare.

    It is something like this: 6491 X Single Core Pvc Conduit Wire | City Electrical Factors. But it will work out dearer than twin and earth as you'll have to buy brown, blue and earth cables

    Size depends on what you're using it for and what circuit protection you have, generally 1.5mm for lighting and 2.5 for sockets
     
  30. IronGiant

    IronGiant
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    conduit cable e.g: Conduit Wiring Cable 6491X 1-Core 1.5mm² x 100m Green/Yellow
    Other colours are available ;)

    There's a better range (both sizes) at toolstation:

    Toolstation

    Probably worth finding out the prices at CEF as sparkie linked to, as prices may be even better.
     
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    Last edited: Jan 2, 2017

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