core

  1. J

    2 core cable to metal light switches

    Went to a flat recently where the cable is run through metal conduit to metal back boxes on a TN-S system. Built in the 60's the flats have aluminium strand cable that is sheathed by a braided woven material (vic cable?) and although old is serviceable. The matal conduit is earthed back to the...
  2. J

    Smoke alarm 3rd core, WHY ?

    Hello fellow sparks, how are we ? I am slightly embarrassed about asking this but here goes, I have never realy understood why you need a 3rd core when wiring smokes, live, neutal and earth i get, but why do you need a switch wire exactly, what is its job ?
  3. C

    2 core cable..

    When supplying an item of double insulated equipment, (in this case an extract fan). Is it acceptable to use a two core cable i.e. no cpc? Or is the earth still required in order to protect the cable run?
  4. S

    107 or 117 core drill size

    Hi, what size core drill, do you generally use for cutting 100mm core holes 107mm or 117mm. Cheers
  5. T

    5 / 6 Core Flex Advice Needed Please

    Hi Everyone Don't often get involved in wiring up central heating! I have been asked to install new Honeywell ST9400c to replace ST7100 on a Y plan (Mid-position valve). The new programmer requires a 5 / 6 core flex. I can get 5 core every where, but I feel over sleeving the earth is bad...
  6. E

    Whats the Best Core Drill? - Top Core Drills

    untill now i have somehow managed to get by by getting somebody else on the job to core out holes, or i've borowed a core drill, but it looks like i'm gonna actually have to buy one now! 2 options here, i know someone who just uses a big sds max drill for this, and i know someone with a proper...
  7. O

    MF JB for 5 core 0.75mm multi strand cable?

    OK, got a call from a plumber mate about 2 hours ago as he'd cut some cables with his circular saw. In fact he'd cut 3 cables - one 2.5mm T&E, one 3 core & earth - both fixed quickly with the Ashley MF boxes. The 3rd cable is 5 core, and it looks like 0.75mm core from the central heating...
  8. K

    how many 2.5 single core in 28mm conduit?

    how many 2.5 single core will fit in 28mm conduit?
    • kerryblue
    • Thread
    • circuits conduit core france guide single single core those
    • Replies: 18
    • Forum: UK Electrical Forum
  9. K

    Sleeving of 5 core cable for lighting circuit.

    Hi, I have a technical query in regards colour sleeving of conductors in a multicore cable. Take a 5 core 2.5sqmm XLPE SWA cable with all white conductor insulation. I want to use this cable for lighting circuits in an industrial installation, can I sleeve the cores to they’re respective phase...
  10. E

    sockets wired in 1.0mm 3 core flex

    Doing a re-wire for a customer who's had their kitchen redone recently and told me the electrics are fine.when I checked, they've all been wired using 1.0mm 3 core flex then sealed underneath tiles.I can't remove the tiles or pull through new cables.Is it permissable to leave it connected like...
  11. M

    cable sizing for 400a 175m 4 core

    hey, ive been asked to work out a cable size for someone and not sure on the sizing for the amps. the information received is that its to be armoured, 4 core and the distance is 175m and needs to carry 400amps. is there a cable big enough or will they have to run two in parallel. thanks
    • matt12321
    • Thread
    • 4 core cable cable sizing core sizing
    • Replies: 17
    • Forum: UK Electrical Forum
  12. C

    2.5mm3 core armoured cable any one know how much it is per meter got a little job on

    ony needing 10 meters so dont want to buy a 50m drum
    • chopper
    • Thread
    • armoured cable core electrical work job knowledge little meter metre
    • Replies: 19
    • Forum: UK Electrical Forum
  13. sjhall

    Core drilling

    Question for any of you guys that do a fair bit of core drilling- Do you drill with hammer action on or off ? I've got a decent enough drill ( makita 8406c 1400w) Ive found I get better results on hammer but dont want to damage the drill ... Thoughts? Cheers
  14. sjhall

    Core drilling

    Wrong section ..... Sorry
  15. T

    core set

    im selling my core set only used the 117mm core too drill two holes less then a month old over £200 in maidstone plumbing. Ill take £150 ono i will post at buyers expense
  16. D

    3 Core and Earth plus a FCU help!!

    Hi Guys I need to add a 3A FCU to 3 core and earth cable for a timed extraction fan (prior to the TP switch), how is this achieved with only L N and E connections on the FCU? Regards DIYBlues
    • DIYBlues
    • Thread
    • 3 core core earth fcu help
    • Replies: 13
    • Forum: UK Electrical Forum
  17. kingeri

    Unused core in T&E

    Quick question. I was adding a 2 way switch to a lighting circuit and discovered a T&E where only one wire was used. he second had just been cut off and not used. I always connect unused cores to the CPC and sleeve green/yellow. Is this common practice or just me?
  18. T

    diamond core drill bit for 4 inch fan holes

    I'm going to buy my self a core bit for 4inch fan holes, what size do you guys have 107mm or 117mm and what makes are good?
  19. Top Cat

    4" core bit, cuts just like butter, yeh right!

    Fitting an inline fan today. Brought my 4" core bit in and the guy says "oh those are great, it cuts through brick like a knife through butter". Yeh right i thought. Started to cut hole, the bricks were hard as rock! Also it was an old place so no cavity so you had to go through 2 lots of brick...
  20. N

    5 core with LED downlights

    I only do domestic works and recently have taken work on for more 'designer houses'. the 'designers' who specify particualr goods etc have requested a few things, which hopefully are only clever words but would apprecaite any help/direction as to what they are saying in laymans terms fire...
    • neil2jo
    • Thread
    • core downlights led lighting lights
    • Replies: 10
    • Forum: UK Electrical Forum
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