concrete

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  1. R

    Underfloor Heating Insulation??

    Hi i have done many underfloor heating systems on ply lined floors but never on a concrete levelled base. The question i am asking is it ok to use polystyrene thermal boards with a mesh type mat i know they are ok with the foil mats but i am unsure with the mesh type. I dont want it to be a...
    • rpelec
    • Thread
    • boards concrete heating insulation thermal underfloor underfloor heating
    • Replies: 2
    • Forum: UK Electrical Forum
  2. V

    Spot lights in concrete slab

    Hi, I want to install 16 spot lights in 3 row of 6 in my TV room. The room is 4mx5.7m I saw and got some samples of the specific boxes i have to use in the concrete but was told that i need to install a pipe for venting them as well. Now the lights are LED type 7W...do they produce that much...
    • vti-chris
    • Thread
    • concrete lighting lights
    • Replies: 33
    • Forum: UK Electrical Forum
  3. W

    Cable in concrete floor

    I have found a large number of cables of various sizes embedded directly in concrete between floors in a block of flats, has anyone any info regards the effects of cables(modern <10 yrs old) being in direct contact with concrete affecting the cable over a longer period of time - thanks
  4. L

    chasing into concrete screed floors - a risk to the neighbour's lights?

    i live in a 1960s built ex-local authority flat. the floors are concrete with approx 30mm of screed poured on top, brick walls. the existing cabling is all MICC which i'm considering ripping out, not because it doesn't work but because i'm looking to move some walls and chase new central heating...
    • laike
    • Thread
    • chasing concrete floors lighting lights screed
    • Replies: 98
    • Forum: UK Electrical Forum
  5. M

    Power floating concrete

    Evening all, nothing to do with electrics but i'll ask anyway :D has anyone on here ever used a power float on a concrete slab? I've got the task of building some new dog kennels at my girlfriends mums place, i've set the formwork/shuttering out and i've got no problem in laying the concrete but...
  6. R

    Twin and earth buried in concrete.

    Went to look at a kitchen refit today. Did a bit of investigation work and the kitchen appears to have a twin and earth buried direct into the floor.its rcd protect however in my opinion this is bad practice? On another note iv got take a new cooker supply to annual and in the middle of the...
    • Robo
    • Thread
    • buried concrete earth twin and earth
    • Replies: 39
    • Forum: UK Electrical Forum
  7. R

    How are cables routed through concrete ceiling/floor?

    Have been asked to advise on possible re-use or rewire of cables in commercial premises. There are three stories and customer is interested in middle floor. These have concrete floors and ceilings. I can see cables for lighting points coming directly out of the ceiling. How would they have been...
  8. billyblade

    Diamond core drills

    Hi everyone. I represent a company who manufacture and distribute drilling and trade solutions which are particularly popular with electricians. I'll not name them so as not to advertise on here.:smiley2: We have a dry diamond core drill kit in our portfolio which sells very well but i feel that...
  9. Z

    Bosch GBH 18v-li SDS

    Hi guys, I have just bought this SDS drill from Bosch. Anybody else tryed this? It looks shockingly week to me! 5.5 in concrete is a massive strugle. Or is my drill factory faulty?
  10. E

    drilling in concrete roof without dust

    i have to drill about 2000 holes in a site that is in use. So i want a (new) driil with dust collector. i dont want a cheap collextro or a collector with external vacuum. so i m searching about this at first on internet. I have found these bosch tools in good price but i want any info of...
  11. B

    Addition to circuit not up to bs7671

    Where do I stand with this one? Got sent to a job today to install an extractor fan in a domestic bathroom for a letting agency When I got to the property I knew it was going to be an awkward one. My plan was to take a three core from the ceiling rose in the bathroom to a fan isolator switch...
    • brizospark
    • Thread
    • addition bathroom bs7671 ceiling circuit concrete going
    • Replies: 14
    • Forum: UK Electrical Forum
  12. O

    running mains cable underfloor along a concrete sub floor

    I have just had an extension built to extend the kitchen and provide another room.The old kitchen area has honeycomb walls supporting a floor joists on a concrete base. The base is clean and without debris. The builder has suggested that when the electrician comes to to wire it up he could pass...
  13. markc123

    Balls of steel incased in 10ft concrete.

    Was told to the check this video out once i'd got home from work...... Height of courage - men working on a sky-high tower (1,768 feet) - YouTube Seriouslly, if you see past the voice of the boring yank commentry and actually listen to it and watch it, its actually amazing. The question is...
  14. tombrooker84

    Anyway of gluing\ sticking back boxes to a concrete wall

    Hello all, I've got a job to install sockets and lights into a concrete pre - fab outbuilding, but the client does not want me to drill into the concrete building as it could ruin the warranty and "affect structural integrity", I was think perhaps grab adhesive? Any ideas? Kind regards Tom
  15. Top Cat

    Cables buried concrete?

    Did a consumer unit change the other day only to find that all the down stairs sockets had been buried in concrete. It must have been a wooden floor then the good old builder just poured concrete in! Insulation readings are L - L = 4.2 M ohms, L - E = 2.21 so just ok. Zs is ok. The problem is...
  16. jason121

    Solar fixings

    I have two enquiries for solar on commercial buildings, one has concrete beams instead of the normal steel does anyone have any ideas the other a school with PVC flat roof. Spec from architect thin film panels mounted at 3 degrees direct to flat roof I welcome some ideas many thanks in advance
  17. M

    Best way to fix into pre-fab concrete wall

    Hi, Getting a pre-fab concrete garage installed next week and I got thinking about how im going to fix the conduit and accessories to the walls when I come to wire it out. What have you done in these situations? The only option I can think of is to just board the garage walls with wood and...
  18. S

    Cables to run accross concrete floor

    I will have to get tails from meter more than 15m to consumer unit. Will also gave to either 12m through concrete floor or through a double skin wall to a room with suspended floor for 10m and back 5m through concrete floor. Whats the best way to do and protect this within regs etc.
  19. F

    Concrete ceiling walls floors,,

    Lady wants me to rewire a 3 bed flat however its all in concrete and im still fresh in the business, how would i go about doing this,, trunking or channelling out all the existing cables and repair work.. also i am not elecsa or niceic etc registered im a sole trader,,and she wants it on the...
  20. M

    Mounting on Fibre cement roof with concrete purlins??

    Any know of a solution for mounting panels on a fibre cement roof that has concrete beams/purlins underneath? The bolts that hold the roof down have a hook which hooks to the bottom of the concrete purlin to keep the sheets in place, but with the weight of the panels I'm guessing the only way to...

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