incoming

  1. S

    CU 10m from incoming box - new dwelling

    A plastic conduit is laid under the floor ready for a cable. I want to use 25mm tails rather than armoured. Previously I’ve fitted 100amp SP&N fused switch with 25mm armoured but they are tight to make off in the mains electrical meter box and some providers don’t want you in there box! If you...
  2. B

    Incoming service amperage?

    Basic question..jist trying to gain some knowledge. I have 2 breaker boxes in my home. Each have 100 amp main breakers. One is not a sub to the other. Both are serviced directly from the meter outside. Should I assume that my house has a 200 amp service coming in? Just split between the 2...
  3. D

    Main Bonding for incoming plastic pipe

    Hello All Noticed the existing bonding for the cold water supply is only 4mm. The supply pipe out of the ground is clearly a plastic pipe. It joins a brass stopcock under the kitchen sink cabinet and the rest of the plumbing in the house is in copper. I'm worried I need 10mm bonding and will...
    • Deleted member 112675
    • Thread
    • bonding incoming main main bonding pipe plastic
    • Replies: 6
    • Forum: DIY Electrical Advice
  4. K

    Incoming supply cable disconnected?

    Hi We’re currently having drainage Installed in our back garden, when the guys digging up concrete next to house came across what looks like a lead covered cable. They followed it along by digging up the area around it, until it entered a brick in the house, this is where the cable ends (see...
  5. Dartlec

    Judging imperial submain T&E cable

    Doing an EICR on a top floor flat recently and run into an issue I often do - which is judging imperial sizes when they are larger than the standard 1/1.5/2.5mm equivalents. In this case, the flat is fed by a Twin and Earth cable that is somewhere around the 10-16mm range equivalent, with an...
  6. M

    DNO UK power networks changed incoming overhead and now have PME TN-C-S but ccu connection to TT

    Hi all. I'm currently training as an electrician so would like your views on this for clarity and if I need to get someone in? I have just moved in to a new (very old) house and on inspection of the CCU I noticed the incoming service cable from the overhead was chard at the top of the dno head...
  7. I

    Use of Singles for Main Earth Conductor and Incoming Neutral?

    Hi folks, Limited experience here and never come across this before. Whilst I can appreciate the conductors may be the appropriate CSA combined, (I haven't measured them) terminating the Main Earth Conductor in the MET like this with what looks like 4 x 4mm2 doesn't allow for the conductors to...
  8. Q

    Do you test the continuity of an installations main incoming earth

    This may seem like a stupid question but when testing for continuity using the long lead method I know you test the water and gas bonds etc but do you test the incoming earthing cable. I ask this because reading guidance note 3 it talks about the earthing conductor to be tested and I am slightly...
  9. OnlQQker

    UK Why Are Incoming Live/Neutral 16mm and Tails From Consumer Unit 25mm

    I just can't seem to understand this and can't find a clear reason behind it either. I asked a chap on the DNO once and he didn't know either. Anyone?
  10. H

    PME? Questionable incoming supply

    So i went to start a job on saturday and i came across this. It is a single core pyro with an earth tail pot, ignore the henley block in the trunking as that is obviously just to extend the pyro but what they have done is come out of the ryefield into the meter with the phase conductor then with...
  11. T

    Combing two incoming municipal electricity supplies

    I've an interesting problem. I've got an potential client. It is a commercial property that used to be two separate businesses each with a separate 60 Amp single phase electricity municipal electricity supplies to the same building. The one company has gone bust while the other one has grown...
  12. D

    3 Phase PME to domestic building?

    Good evening all.. I have recently installed a new 100amp 3 phase supply for a domestic premises with outhouses. The incoming 100 amp supply is PME and approx 30 metres from the main dwelling, a new metering cupboard was built for the new head and meter. I installed a small sub board and two...
  13. Marcus Vaughan

    BS951 Bonding Clamp on the Incoming Supply

    Hi all, Just been to look at a job for a consumer unit changeout, checked the supply and, Not sure you can see it too well but TNS system with older earthing conductor in green kind of sweated onto intake (connection does not feel too good), but disconnected at the other end (goes into that...
  14. R

    Is it possible to have the incoming main power feed moved?

    hi all new this forum, and I have a question .. I’m looking to buy a house and the incoming mains and meter are in a cupboard on the exterior side wall. But there is no direct access to it other than asking the neighbors permission to enter their garden to read it. My question is, is it...
  15. J

    Bonding - CU or Main Incoming Fuse

    I'm aware that a 10mm earth cable needs to run to the incoming water and gas supply but I was wondering if someone could tell me whether this should be from the consumer unit, the main incoming fuse, or both? TIA
  16. FatAlan

    Comments on this incoming supply and fuse boards?

    Looking to install a bathroom extractor and isolator. Looking at the set up it looks like a TT system with old fuses and later additions protected by an RCD. Looking forward to doing some testing before I jump in. It’s an ex LA semi with an extension to the side. Have so far been unable to...
  17. Daniel Oake

    What are your opinions on bonding water pipes if main incoming is plastic?

    You turn up to a property that had recently had an EICR, reporting that the water had no bonding. The main water stop cock and on-wards was plastic push fits with maybe 400mm lengths here and there (downstairs), but upstairs is still all copper piping behind bath panel and sink pedestals to 2...
  18. C

    Main bond to rubber incoming water pipe.

    Had DB changed a couple of years back in my house that I was renting that I now live in. I was out of the country at the time. No certs were handed over and I am unable to get in contact with the guy that my parents got to do the work. I am in the process of selling the house. The 6mm bond to...
  19. J

    Can incoming mains run above ground under suspended floor?

    Hi all. I'm looking for some expert advice on the above. I am having an extension built and the footings are a raft slab which can be built/poured under the existing incoming mains cable (it's in a black pipe approx 50mm dia). There will be a suspended floor approximately 100mm above the...
  20. S

    Old Incoming service cable/head. Does it need replacing?

    Hi all, My brother has just bought a new house, which is to be fully refurbished. The wiring is appaling and barely meets a single reg; current or historical. (no part of either RFC seems to actually be a ring, lighting on 15A 3036 fuse in 1mm, spurs under the carpet etc etc) All of this will...
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