cores

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  1. AngelLaHash

    Two way light switch with 2 cores!

    So i have a Ceiling Fan (lets just class it as a Light with a Pull cord at the light) and a light switch Problem is i turn the light off at the Light at night .. and when i wake up i turn it on at the light switch. Sadly the light switch is TWO Core so it doesnt really effect the light , ONE...
  2. P

    Why are all the other cores becoming live??? (Video)

    Can someone please help me understand what the hell is going on here??? This 3c E was in flexi conduit and the same problem was happening as shown in the video. I have pulled it out to do it like this for testing purposes. I have tried with 3 different pieces of 3c E. all tested open between...
  3. timhoward

    Uncommon SWA cable with different coloured cores

    I was the 2nd sparks taking over a garden office supply job. The first sparks had fitted 10 sq mm 3 core SWA, but it actually had brown, blue and g/y conductors. The middle was also more like hi tuff in the sense the insulation surrounding the 3 cores resembled a cable in its own right not just...
  4. K

    Ceiling rose with 3* single cores

    Hello, I had the floor boards up today and noticed that the ceiling rose for the room below, was wired with 3 singles. Probably the whole house is like this, this is just the first one I've seen. The house is a 1970's house so quite old with regard to the wiring, but I'm really curious what...
  5. ChrizK

    Electrial Rf interference, theory and practice of using Ferrite Ring Cores 'choke'

    I appreciate that @mark641 asked how ferrite cores work here, answered by @Lucien Nunes , but TBH, it is at a deeper level than I need. My question is more so in regard to the practical use of them. I (unfortunately) bought a Road Angel Halo Pro dashcam ...I bet you can already guess the...
  6. T

    SWA to shed - are two cores enough?

    Hi, Apologies in advance if this is in the wrong forum. I tried to post to 'Electrical Advice' as a DIYer but had issues. I'm laying SWA (about 40m of 10mm2 as advised by a pro) to a new workshop building that will have its own CU, circuit and ground spike. I want to do the donkey work and lay...
  7. G

    How do you wire your EM lights? Brown and Black cores in MCB

    Evening gents. Level 3 trainee here so forgive a maybe stupid question but I came across this today. EM lighting circuit, two cores from 4 core SWA into MCB. Brown core switched live off to two way switching, black perm to EM maintaince keyswitch. Maintained colours throughout circuit. Seemed...
  8. M

    Ferrite cores, how do they work?

    My understanding of the theory is: Some devices (e.g.motors) generate harmonic frequency currents & radio interference. Add a ferrite core: the oscillating current generates magnetic flux; ditto eddy currents; ditto heat. So the core will absorb energy from the wire, if correctly designed it...
  9. driverman

    CCTV > Router Cat 5/6 solid copper cores

    Hi Guys, I have asked this question before in another thread that I was following, but can't find it. I've installed a CCTV system. What I'm after is a 10m x suitable Cat 5 or 6 cable complete with plug ends fitted. I believe it was suggested that copper solid 8 core cables are better. The cable...
  10. Mark42

    Sleeving Brn-Blk-Gry cores for SP. Is there a convention?

    If using 3-core SWA Brown/Black/Grey for a single-phase circuit, what colours do you use? I leave the brown as live, then sleeve the black with blue for N and the grey with grn/yel for E. It's arbitrary, but was wondering if there's an informal convention, and if maybe I've been 'doing it...
  11. C

    What do you need in order to carry out domestic electrical work.

    I am near the end of a apprenticeship(year 3) in industrial and commercial electrics and feel very competent in what I do, I would like to be self employed when I am qualified, and I was wondering if there is any way I can carry out domestic electrical work legally at the weekend for example is...
  12. M

    Can I wire up a Honeywell AG6 Alarm bell box with only 4 cores?

    Replaced panel and would now like to replace Bell box. Using Existing wiring, it has two cores from bell box wire to an individual zone, so only 4 Spare cores available at bell box. I cannot even find the possible 'zone/pir/panic button' to check the wiring at it. Can anyone help me...
  13. calpol91

    RJ45 - 3 damaged cores

    Hi. I have a customer with a cat6 from his house to a workshop on his land further up. Most of the run is underground, and the pipe is fair tight. 3 of the cores are damaged at some point and he's reluctant to pull a new cable in if he can avoid it since its a massive run, although I have...
  14. B

    Belling out

    How to bell out 2 core MICC?
  15. I

    Satisfactory or Unsatisfactory

    Hi fella's , Following a recent report I have had sent to me t was deemed that multi-core SWA doubled up to supply a single phase piece of equipment, was unsatisfactory for following reasons. 'Poor onsite installation practice may result in increased risk of failure,electric shock or fire'...
    • Industspark
    • Thread
    • cable circuits conductors cores factory satisfactory unsatisfactory within
    • Replies: 15
    • Forum: UK Electrical Forum
  16. HappyHippyDad

    Extending cat 5 cable or telephone cable and maintenance free requirements?

    I was wondering if the maintenance free requirements (MF) are the same with communication cable as with low voltage supplies? I can't see why they wouldn't be. The junction boxes for cat 5 cable or telephone cable where you just use the insertion tool have no screws that could come loose but I...
  17. D

    110v temporary lighting questions

    Hi guys, fairly new to industry and even newer to temporary lighting. We are putting up 5 normal and 3 emergency lights. The lights are being switched via a sensor. The normal fittings have 3 cores and the emergencies gave 4. The cable from sensor also has 4 cores. How should I connect the...
  18. Tuttle

    Garden Lights + Power ... Which SWA Cable / How Many Cores?

    I need to supply power to a couple of garden lights and a 13A socket in a longish garden. The requirements I've been given so far are a bit vague - the socket needs to go at the end of the garden, the lights will probably go somewhere along the side of the garden, and I'm assuming that they...
    • Tuttle
    • Thread
    • cable cores garden garden lights lighting lights power swa
    • Replies: 26
    • Forum: UK Electrical Forum
  19. P

    3 Phase cable, single phase single phase supply.

    I need to use a 3 phase cable that is connected at the incoming end and supplies a 3 phase board that is to be removed. My question is, is it ok to use the 3 phase incomer isolator but just remove 2 of the phases that feed it (black grey) and just use the brown and blue cores to supply the...
    • Paulm0479
    • Thread
    • 3 phase cable cores phase question single single phase supply
    • Replies: 8
    • Forum: UK Electrical Forum
  20. D

    Three Phase Flex - two black cores?

    Hi chaps, Spent today repairing a load of 63A and 125A three phase flexes. When taking the damaged plugs off I was somewhat surprised to find that two of the cores were the same colour... Can anyone explain why I've got two black cores and one brown? I was expecting to find black, brown and...
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