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running outside cable to power outside lighting

Discussion in 'Electrics UK' started by JayHS, 13 Aug 2009.

  1. JayHS

    JayHS

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    hi everyone..

    question..

    i want to fit a outside light with PIR sensor.

    but i want to hide the ugly cable that i will use.. so can i thread the cable between the cavity of the brickwork.. i.e. running up along the back door, and then have the cable come through the inside, running under the floorboads?.. to the main fuse box
    do i need to use conduit? in every area that i mention above
     
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  3. ericmark

    ericmark

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    Using mineral insulated cable which is about neatest option no it will be fine as it comes. But not really a DIY job with that cable. Ali-tube would also be OK. But really with the problems of charges from LABC I would think you would be better not to DIY anyway.

    Read about Part P.
     
  4. londonboy

    londonboy

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    Could you not life floor boards upstairs, and drill out thro the cavity within the floor void (if you get me).
    Then somehow get cables from there down to cu + where ever you want the switch.
     
  5. JayHS

    JayHS

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    hi there..
    mmm it gets complex now.. lol.

    we have power to the outside wall, but it was never used.. never set up. but i simply want to ( bury the cable ) as it looks a mess..can i put it inside the cavity, i know where to run it too..and in what way.. just not sure if i can bury the 3 core 2.5mm flex in the cavity, naked as it were.. within the cavity of the brickwork.

    or do i need conduit..or other type of cable...
    i will call a sparky tomorrow..but i simply trying to find out what i can this evening whilst the mrs is watchin her soaps lol
     
  6. londonboy

    londonboy

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    Flex?
    Wait for electrician to advise.
    You don't want to do any work yourself and find its incorrect.
     
  7. spark1

    spark1

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    3 core 2.5mm flex


    ..Thats big flex for a light !
     
  8. JayHS

    JayHS

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    i know.. lol.

    yes i will get advise from a sparkie

    and get him to do the work, the latest rules and regs were updated because of guys like me in the past lol.. :rolleyes:
     
  9. spark1

    spark1

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    Sensible descision Jay. If more people took this veiw then a lot more domestic properties would be in a Healthier state indeed.
     
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  11. electronicsuk

    electronicsuk

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    If you want to drill straight through the cavity wall from inside to outside and keep the majority of the run indoors, that's fine. However, you don't want to be running cables horizontally, vertically, or any other way inside the cavity other than straight through.
     
  12. Lectrician

    Lectrician

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    Why would you even consider recommending MI for a domestic PIR flood light, especially as the OP is obviously a basic DIY'er?

    And what the hell is ALI-tube?

    I would look to tidy the cable up rather than loose it. It cannot look worse than a ****e halogen flood light on your wall.
     
  13. RF Lighting

    RF Lighting

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    It's that stuff like FP for negating RCD protection that I have never actually seen on sale.
     
  14. JayHS

    JayHS

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    my halogen flood light looks the bees nees... not some tacky £8.00 job from B&Q.. oh..hold on, yes it is.. but it looks fab.. i just dont want the unsightly cable visable..

    as i have white smooth finish exterior walls.. and hence the flex needs to be hidden
     
  15. ban-all-sheds

    ban-all-sheds

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    I would have thought that floor-void height would be OK for a floodlight...
     
  16. JayHS

    JayHS

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    yeah i recon it would be fine.
     
  17. ban-all-sheds

    ban-all-sheds

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    Right - so they are lower down?


    I know what you mean - I hate that, and will go to great lengths to avoid it myself.


    The problem with cables in cavities is that if insulation is pumped in (which will happen more and more as fuel costs rise and the Govt needs to give people incentives so it can meet its CO2 targets) that can reduce the current carrying capacity of the cable and attack the PVC sheath.

    Chasing it into the inside leaf would be better, but would result in a need to redecorate.....


    Can't ignore the latter, and shouldn't ignore the former.

    Strictly speaking installing these lights is notifiable, but the guidance in Approved Document P is that it's not as long as the cable isn't exposed, which is just what you want. The guidance is wrong, vis-a-vis the law, but it would be rude to refuse to follow it.. ;)


    Someone seeing it in the flesh might have good ideas.


    <shrug>
     
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