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Discuss casting down-lights into concrete (new build) in the Electrical Forum area at ElectrciansForums.co.uk.

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  1. J.C.E
    Offline

    J.C.E Electrician's Arms

    Location:
    Earth
    Looking at a job tomorrow evening for a new 5 bed house +granny flat over a basement floor+ground.

    In my initial phone call to the client- down-lights are wanted in the basement concrete ceiling

    'which will need to fit cowlings we've already cast into concrete'

    I am assuming they are not/don't want too drop the ceiling and have down-lights installed this way.

    I have never been involved or even thought about down-light actually recessed into concrete!!

    assuming 'cowlings' are maybe hoods that are pre installed before the concrete pour? -how is it wired? pre installed conduits?

    any advise or past experience welcome
    cheers
     
  2. Strima
    Offline

    Strima Electrician's Arms

    Location:
    St Neots
    Have they specified what fittings are to be used in their 'cowlings'? Has conduit been run in etc?
     
  3. Murdoch
    Online

    Murdoch Electrician's Arms

    Location:
    Woking
    Suspended ceiling...........
     
    • Agree Agree x 2
    • Like Like x 1
  4. Risteard
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    Risteard Electrician's Arms

    Location:
    Derry, Ireland
    Business Name:
    Walsh Electrical Services
  5. ipf
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    ipf Trusted Advisor

    • Funny Funny x 6
  6. Adam W
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    Adam W Electrician's Arms

    Location:
    Bournemouth
    Presumably they're similar to ground lights which fit into a kind of 'sleeve' (or "cowling") which is set into the ground, or in this case the ceiling.
    As everyone else has said this raises an interesting question as to how you're going to run the cables - ordinarily, as Murdoch says you'd either board it out, or surface mount it in conduit if you're going for or don't mind a more industrial look, but in that case you'd probably surface mount the fittings as well.
    If there's no ducting been set into the concrete you might face a challenge.
     
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  7. PEG
    Offline

    PEG Trusted Advisor

    Location:
    Manchester
    Just done some in a concrete drive,but no structural issues,such as in a floor.

    Would be interested to know the construction method/spec for that job :)

    Just an addition to this theme,i was recently involved with the building of muck clamp,which is constructed using pre-formed concrete panels,mounted vertically.

    These are 15' and 30' long,and weigh 2 and 5 tonnes a piece.
    They have supplied lifting loops,which screw in to cast threaded sockets,on the top edge,but a lad on the job,said he usually bored two 4" holes,and poked the stacker truck forks,through these :eek:

    A call to the manufacturer,revealed it is prohibited to drill a hole for a rawl-plug:rolleyes: or else they are deemed scrap.
     
    • Informative Informative x 1
    Last edited: Mar 13, 2018
  8. Pete E
    Offline

    Pete E DIY

    Location:
    N Wales
    While on holiday in Greece a few years ago, the hotel was being extended upwards by having an additional floor added.

    It appeared that the cable for the electrics had been run within the shuttering and the concrete cast over them such the cabling ended up being encased in concrete.

    I have no idea if this is a common approach over there or just down to a lack of standards in that particular case...
     
  9. Adam W
    Offline

    Adam W Electrician's Arms

    Location:
    Bournemouth
    That kind of approach might fly in the rest of Europe but it doesn't comply with British Standards - the installation has to be rewireable without demolishing the building. I would have thought that was common sense.
     
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  10. Pete E
    Offline

    Pete E DIY

    Location:
    N Wales
    I wasn't for one minute suggesting it would comply with our standards simply making an observation about what I'd seen to get around the issue of running cables in a cast concrete building..
     
  11. Adam W
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    Adam W Electrician's Arms

    Location:
    Bournemouth
    I wasn't suggesting you were, I was just flaunting the fact that our (electrical) standards are more stringent than the rest of Europe's - it's much more important to have safe and usable electrics than to have all your vegetables a specific shape.
     
    • Funny Funny x 1
  12. J.C.E
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    J.C.E Electrician's Arms

    Location:
    Earth
  13. J.C.E
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    J.C.E Electrician's Arms

    Location:
    Earth
    agreed- but before looking at site today- guessing there is a reason they don't want to- i have a feeling they want exposed polished concrete ceilings/floors
     
  14. Murdoch
    Online

    Murdoch Electrician's Arms

    Location:
    Woking
    and surface trunking for the cables ...........................?
     
  15. HandySparks
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    HandySparks Trusted Advisor

    Location:
    Hampshire
    Business Name:
    Neish Electrical Services
    Why would you want fire rated fittings if they're housed in recesses in the concrete ceiling? (I assume that the holes for the fittings don't go all the way through the thickness of the concrete.)
     
    • Like Like x 1
    • Agree Agree x 1
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