conductors

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  1. D

    Doubling over conductors in ring circuit

    Was wondering. I haven't been to college for about 3 or 4 years now and I can't seem to remember what they said about doubling over conductors in a ring circuit. So in a ring circuit using 2.5mm twin and earth cable, is it recommended that you double over the conductors before terminating them...
    • David345
    • Thread
    • cable circuit conductors doubling ring ring circuit ring main socket sockets terminal termination twin & earth twin and earth wiring
    • Replies: 14
    • Forum: UK Electrical Forum
  2. Pretty Mouth

    Bonding conductors and their sheaths

    Hi all. I have a gas pipe to bond. The client isn't keen to have the cable run internally, so I plan to run it around the outside of the building. In conduit is one option, but will look at bit ugly IMO, so am considering clipping the 10mm direct. Anyway, it's thrown up a couple of basic...
  3. N

    What to do with unneeded NM conductors?

    I'm updating my kitchen wiring and I believe the in-ceiling ventilation fan needs to be AFCI-protected. To accomplish this electrically all I need to do is pigtail into the hot wire of one of outlets on the load side of the AFCI outlet. Can I just clip off the unused neutral and ground wires...
  4. M

    Conductors in parallel

    "433.4 Overload protection of conductors in parallel Where a single protective device protects two or more conductors in parallel there shall be no branch circuits or devices for isolation or switching in the parallel conductors " I am in debate with another spark. I have installed 2x2.5mm...
  5. Pretty Mouth

    Why are main protective bonding conductors sized as they are

    Hi all. Hope you are all well and virus-free. This question is not how to select main protective bonding conductor sizes according to the regulations. That I understand how to do. What I am asking is: Why do the regulations require such a large CSA for Main Protective Bonding conductors...
  6. J

    RCD didn't trip when live conductors cut

    I recently cut through the live 240V power cable of a plane the tool is double insulated, the blade exposed and combined both conductors. The supply is protected by a 30ma RCD and 30Amp MCB (10 yera old installation), the RCD didn't trip, it does trip when the test button is pressed. Could it be...
  7. cliffed

    Sub main & bonding conductors

    Installing Swa 35MM 4 c,to new school block. This supply will come of a MPB,nearby,to me the supply to this MPB does not comply. Concern once again are the size of the bonding conductors realative to the the Main REC supply. The drawing we have,have no input on this, it’s a Tncs system,& earth...
  8. O

    EICR and non standard conductors

    Hi Guys, Just wondering what I write on an EICR when I come across different conductors, I have a job with what I think looks like multi-stranded 4mm tinned copper on a ring. Particularly in the schedule of test results, do I just say it's 4mm/2.5mm and then add it as an observation, is it even...
    • Oli
    • Thread
    • conductors copper eicr standard
    • Replies: 5
    • Forum: UK Electrical Forum
  9. Pretty Mouth

    70s house, aluminium conductors

    I visited a client about a week ago, an elderly couple complaining that their lounge, hall and landing lights were all flickering simultaneously with a noticeable buzzing noise. When I arrived the lights appeared to be working ok (I asked them to switch them off until I could attend), so an...
  10. J

    Unused conductors in trunking

    The client has decided that redundant circuits, created by us by decommissioning obsolete equipment, should be, in the first instance, removed completely. If this can be shown to be unsafe, cutting back a metre at each end would suffice. I seem to remember a regulation that unused conductors in...
  11. S

    Ring final circuit conductors and value Zs and R1+R2

    Hi all, I would like to ask you about ring final circuit canductors and schedule of test results. I have got dedicated ring circuit to supply kitchen appliances. Circuit is protected by mcb tybe B 32A. Then supply is split into radial circuits to supply appliances by switched 13A FCUs. What...
  12. Marcus Vaughan

    EICR - Code 1 or 2 - for unenclosed conductors in choc-blocs?

    Hi all, I've got a couple of examples of this; on a domestic EICR. I'm on the fence with the coding - C1 or C2. There is no copper showing on the live parts - but I wouldn't like to grab it. I just want to be consistent with this - I mean if it was just bare conductors twisted together...
  13. D

    2 conductors in the same Wago connector hole

    I've just watched a video on youtube about installing a bathroom extractor fan off of the light switch. In it the guy says how much easier this is when you use Wago connector blocks rather than a ceiling rose (about 7 and a half minutes in). He's using Wago 3-way lever connector 222 blocks...
    • Daniel Howard
    • Thread
    • conductors connector wago
    • Replies: 76
    • Forum: UK Electrical Forum
  14. cprfenom

    Protective conductors on an EIC

    Afternoon all. Can I confirm that a protective conductor in section 16 of an EIC refers to bonding to services etc rather than a cpc of a final circuit?
  15. Michaelwgroves

    6mm Earth and Main protective bonding conductors

    Just been to a 1981 TN-C-S installation to fit new CU. Both Earth and Main protective bonding conductors are 6mm, which I understand was typical back then. 16mm tails with 60A DNO fuse. Upgrading earth and bonding is gonna be tough as run up cavity and round the corner, I ain't never gonna pull...
  16. K

    Conductors in parallel......

    I was at a job on Friday in a big 4 storey house. One of the jobs I was there to do was to add sockets to a bedroom which actually didn't have any at all. The top floor sockets were on there own breaker, a 32A RCBO actually. There were two 4mm^2 T&Es at the RCBO so I initially thought it was...
  17. S

    Non standard colour of conductors... your thoughts on this?

    My aunt and uncle came over today and we got on to the subject of electrics, he had a guy come over to one of his shops to add four new shop light fittings everything was fine and the certificates were issued, but one things my uncle said thats lingered is that the building being over 30 years...
    • Sparky_marky2
    • Thread
    • colour conductors standard thoughts
    • Replies: 48
    • Forum: UK Electrical Forum
  18. Pete999

    Pete's Videos Guess this bloke never heard of bending the conductors over

  19. Doomed

    Lightning conductors as part of contract

    We are bidding for the electrical maintenance contract on several buildings, the spec is quite straight forward, 5 yearly's, emergency lighting, fire alarms etc, but they have bundled in the lightning conductor tests which we have never dealt with, any one had any experience on the annual...
  20. I

    Open pen conductors and future 18th edition considerations

    Electrical Safety First’s recent electrical installation safety roundtable focused on open-circuit PEN conductors, which serve as both a protective earthing and neutral conductor. Although PEN conductors within installations have been prohibited for some time now, older ones still remain in, for...

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