incoming

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  1. 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...
  2. 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...
  3. 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?
  4. 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...
  5. 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...
  6. D

    UK 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...
    • deckie
    • Thread
    • 3 phase building domestic incoming installed new phase pme question supply
    • Replies: 4
    • Forum: UK Electrical Forum
  7. 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...
  8. 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...
  9. 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
  10. 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...
  11. 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...
  12. 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...
  13. 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...
  14. HappyHippyDad

    What does the incoming cable look like if the earthing is TNS?

    I never get to see the incoming cable supplying power to a domestic property. Does a TNCS earthing system usually have an incoming cable with one core which is the line and a sheath which is the neutral? What type of cable is used for TNS where the earth has its own conductor going back to...
  15. J

    overhead incoming supply TT TNCS?

    Looked at a rewire for a 5bed house reno this morning bit of a odd setup! so the house is supplied overhead- see pic 1- 2cores through the roof in loft into a 60a fuse then what looks like a 16mm T+E- but cpc (if one) is not used this travels some meters (at a guess 10m) down to the ground...
  16. R

    >2000 ohms on loop test?

    Hi guys, Was wondering if anyone could shed any light on why I would be getting >2000 ohms on my loop tests, on every circuit? I got .26 on the incoming reading, went to do the test on the cooker circuit and >2000, thought I'd try back at the consumer on the incoming and >2000 again, I'm using...
  17. D

    SMA 4000TL 'Insulation resistance' error

    I've recently found the green light flashing and the red light on on our SMA 4000TL with the message 'Insulation resistance, check generator' on the display. Checking the ERROROB2.CSV files I can see that this isn't the first time it has errored in this way, it has happened on odd occasions for...
  18. Adie moore

    rcd bust?

    strange goings-on or it might be me, this is what happens; • 3 lead loop test on final circuit = rcd trip • 3 lead loop test at board, outgoing side of rcd, all circuits off = rcd trip • 3 lead loop test at incoming side = rcd trip • rcd test at outgoing side= X.5 no trip X1 45ms X5 29ms...
  19. R

    Main Incoming Supply Cable To House

    Hi, I've just bought my first house, a Victorian terrace and it's well overdue an electrical upgrade. I plan to do this myself with the guidance of a friend who is a qualified electrician (though I am an industrial electrical and electronic design engineer, so am competent in some aspects, but...
  20. M

    Distribution Board, Blakley, MDA, 1600A 4P Incoming MCCB

    Hi everybody! We are selling used Standard 1600A Mains Distribution Assembly In order to maximise the flexibility of standard high current MDAs, the incoming and outgoing MCCBs incorporate electronic trips, which can be easily adjusted on site from 40% to 100% of the nominal rating. The...

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