main

  1. Dvyj123

    UK Extending ring main with wago 222

    I have come to extend a ring main on the old wiring (red and black) and have used the wago 222 connectors to extend each leg and extended each leg in a wago junction box and are all connected in the ceiling screwed to joists. The wago 222’s are rated at 32A but when used maintenance free like I...
  2. Viper22mike

    UK Sub main joining niceic advise Needed

    Joining niceic and doing a sub main to a garage off a tns earthing arrangement using 6mm Swa. The question is I have 25mm tails on 100a main fuse to a down rated dp isolator with a 63a fuse from there the swa. I'm filling in the eic for them to view do I put the 100a or 63a main fuse size in and...
  3. Mdterpsfan

    Main panel and sub panel grounding.

    Brian, DIY but 30-year commercial/industrial master HVAC tech. I have installed an emergency whole-house breaker switch next to my service meter. This will now be the main panel and I have subsequently tied my two grounds from grounding rods into the new panel. The the original main panel...
  4. M

    Main bonding questions

    Probably a basic question In an installation with pipework or cable ladder that's not extraneous as such but is connected to earthed metal What's the logic for not main bonding it as the metalwork can surely introduce a potential in a fault situation?
  5. V

    Neutral Conductor Size - Main Switch to Neutral Bar

    Don't come across this very often - but I've had a CU delivered for a caravan job (not static btw), and it's been supplied with a neutral conductor from the main switch to the neutral bar! Definitely an oversight, but I've got plenty of singles cable in stock, so rather than send it back, I...
  6. richardg

    Solar PV earthing earth rod or main earthing terminal in house

    Hi installing my first solar PV on my own home before starting the courses next year and need some advice on earthing PV. System 6kw solar PV - 2 strings Solis Rhi inverter 20Kwh pure energy battery’s The solis inverter has its own TT system to run as a floating neutral when in UPS mode which...
  7. P

    UK Main fuse bunched with other houses

    Hi, wondered if anyone can help… just bought a new house and it has an alleyway between next door, in which I have found one main supply which branches off to 4 separate main fuses for mine and 3 other houses. So it appears the side of my house has the fantastic benefit of managing the...
  8. Yanman

    Electrical test on D.O.L fed straight from main panel isolator

    Hello everyone i recently got a job on replacing a BMS panel in a plant room. the NEW panel i installed except the control side of the install also feeds the mains for a few gas boilers, immersion heaters and cylinders, pumps. etc. I am going to do the testing on that and i...
  9. RK1984

    Main breaker in the main lug only subpanel

    I am building a duplex. The service enters the house through the wall of one of the units, where the main panels for both units are located. Then the service lines go inside the walls to the garages of both units, where subpanels with all the breakers are located. At this point the subpanels...
  10. M

    UK Smart meter installation possible - main fuse?

    Hi, I have a flat in a rather old building in London. Its subdivided into a few individual flats, and there is a meter board with a gas and electric meter in each flat. My electricity supplier sent someone out a few days ago to fit a smart meter, but the fitter said he was unable to do so...
  11. cliffed

    Main bonding to metal container inside warehouse

    Seen many answers on this but still not sure on a definite answer. Power installed inside metal container, the units inside a warehouse, the supply to the warehouse 200amp TNCS The power points are Rcbo protected,so is the lighting inside the container, 16/6 amp respectively. Will this-require...
  12. J

    Sub Main Connection From Meter Box

    Hello All, new to the forum. Would be grateful for advice on whether the following proposal is an acceptable solution or open to any suggestions for improving. The brief is to supply a detached garage with incoming power and CU. Power will be used to supply a couple of sockets, lights and an EV...
  13. M

    Main earth after cut-out replacement

    Hi all, After months of waiting, the fused neutral cut-out at my parents house has been replaced but I am concerned about the main earth. I believe it to be a TN-S as the main earth is attached to the back of the main incoming cable. In December, I got the CU replaced and isolator fitted and...
  14. N

    location of main switch in consumer unit

    hi there - i have a consumer unit where the main switch is located in the middle of the consumer unit. I usually see the main switch on either the right or the left and i wondered if it is acceptable from an EICR point of view having it in the middle ? I attach a picture Also i just wanted...
    • NickTG
    • Thread
    • consumer consumer unit location main main switch switch unit
    • Replies: 13
    • Forum: UK Electrical Forum
  15. E

    Fuse missing from main disconnect panel

    Hi there, I run a recording studio out of an early 50's built warehouse. I've been having electrical noise and ground loops in my audio equipment since I've been here (almost a decade) and I've finally decided I can't deal with it anymore. I'm going to install a new main panel as well as new...
  16. Peter55

    Earthing question - three phase into main building, then single phase to EV charger

    Hi there, new to the forum and in final stages of completing C&G level 3; need to complete design project to complete. Am struggling to get my head around how to draw up correct circuit diagram showing EF Loop path for EV charger where initial supply is described as 'three phase TNCS' feeding to...
  17. B

    3rd Floor Flat Lost Main Earth

    Hi All 3rd floor flat has incoming supply via Conduit which was being used as the earth. Conduit at some stage has failed leaving the property with no suitable earth. Would it be necessary to run a new sub mains and renew the supply also or is it within the regulations to run a separate...
  18. E

    EICR question - gas bond off main TNS

    Hi all, is it acceptable or was it in previous regs if not anymore? To take the gas bond straight off the TNS connection shared with main Earth? See pic. Thanks Paul
  19. D

    UK Lighting circuit on a 32Amp ring main question

    First post and Newly qualified, been asked to complete an EIC/EICR on a property after previous electrician carried out the work but never gave a certificate for pretty much a full rewire. I had a quick look when I popped round, and from what customer says, there is a 32Amp ring main for...
    • DD6619
    • Thread
    • circuit lighting lighting circuit main question ring ring main
    • Replies: 7
    • Forum: UK Electrical Forum
  20. amwitte1

    Main Panel and Sub Panel Wiring Issues

    Hello everyone, I hope you are doing well. Several years ago I purchased an older 1971 home (aluminum wiring that has since been fixed with al/cu purple connections). There is also a sizeable detached workshop (copper wiring) in the back. This workshop's wiring is in such disrepair that I...
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