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  1. S

    Pme question again

    Am carrying out a job soon a sub main to a out building in someone’s garden. The house is tncs earthing so was planning on doing tt at the shed. There’s no extraneous metal work, but it is a concrete base and they are planning on putting some fridges or freezers in there. Would others do the...
  2. Gavin John Hyde

    TT to PME conversion

    At a house today fitting yet another car charger. Straightforward install apart from fuse holder having a crack in it. Called SSEN who sent an engineer out, he pulled fuse and replaced holder. Install was overhead TT to old cottage. live fused neutral comes in via a henley block before going...
  3. S

    Trying to set up thermostat

    THIS IS FOR ELECTRICAL NEWS ONLY
  4. Msitekkie

    Separating PME & TT earthing for outbuildings

    I would appreciate peoples thoughts on fixing this earthing setup to correctly separate PME & TT: Setup: Workshop at the bottom of a long garden connected to supply via 3 core armoured cable. Earth rod fitted at workshop, but the earth has also been connected to the PME from the supply & the...
  5. G

    PME, TN-S ??

    Hi, a customers earthing arrangement in TN-S. Main earthing conductor 6mm and clamped (loosely) onto outside of supply cable. Having spoken to DNO regarding this they email me saying they will send someone to see if PME is available. The email states PME is the ONLY way they provide an earth...
  6. S

    Lost neutral on PME consequences

    Hi all, I was reading about what can happen if the neutral on a PME system is lost at some point before the cutout and I have a few questions that I'm hoping someone could help me with. 1) Am I correct in thinking that for a properly earthed and bonded system, if the neutral is disconnected...
  7. S

    UK PILC mains cable to PME system

    How do uk power networks install a PME system on old PILC mains cable. Do they use the old cable and put a junction on, where it terminates in the property. Or do they put new cable in from the street. Do anyone know how much they charge for this. I'm getting the usual unapproved earthing clamp...
  8. 0

    Loss of PME device

    I'm just curious as to what everyone thinks of the new device that has been made by pod point for their EV chargers? It basically cuts the supply to the charger in the event of a broken PME. Could we see this device being used at the source of PME installations? I personally think it would be...
  9. RyanAspire

    New circuit design question

    Hi guys, Have a job on next week for a friend, my usual industry is maintenance so want to be sure I am checking all the boxes here. He intially measured the run out at 122m, which would require a 70mm cable due to volt drop, however its changed slightly and I have other queries... He now...
  10. OnlQQker

    TN-CS Combined With TT Question

    So I've just watched this and the chap explains all the different Earth arrangements used in the UK. He mentions about how in a TN-CS earth system if the neutral was broken just before it came into your house then this would be very dangerous. So I was just wondering if a TT system combined...
  11. D

    Meter fitter refusing to connect to PME supply

    Hi, currently working on a shop refurb at the moment. It's a traditional building( bricks and mortar) with a house attached on the back. The house and shop are on the same supply and meter for the time being. To move the project along we've had move the supply and meter to a new position...
  12. B

    TNS OR PME

    Hi, testing on a big site at the mains I’m getting 0.06 ohms now I can’t verify if it’s TNS or PME, as the incoming supply comes into a sealed unit with built in meter, the transformer is directly behind, Ze has been taken with all parallel earths in place as unable to disconnect, any way I can...
  13. U

    PME earth "disconnect gadget"

    I understand there is a gadget on the market to disconnect PME bonding. I/We are quite concerned about this and I would be grateful if a member could quote the Regulation number for this. Thanks in advance. Regards, UKPN
  14. G

    New Build house off existing supply, export PME or TT

    HI all, customers are building a small house and im coming off thier PME supply to the new build, 25mm 3 core SWA, small two bed house about 40mtrs away builders have put another MEB box next to the existing one and im fitting a metal clad switch in with 100amp 100ma time delayd RCD to RCBO...
  15. T

    6mm water bonding on PME

    Hi all, I imagine that this has been asked a few times, but here goes. A customer who is selling their house has been on looking to change the consumer unit. Getting to the gas isnt a problem but the water is impossible without desctruction of some sort. Concrete floors, and the stopcock is on...
  16. 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...
  17. S

    UK 32a supply for a hot tub of a PME supply.

    Hi there, I have been asked to install a 32a supply for a hot tub for a client. I haven’t installed a supply for a hot tub before and having done a bit of research I am getting mixed answers about doing this on a PME system. I have a DB under the stairs with plenty of spare ways so I would be...
  18. B

    TT or PME garage

    Hi all Question regarding exporting PME earthing system to outbuilding/garage. The garage has no water/gas/oil supplies but has a concrete floor. What is the recommended method that most would use in this case. Take the PME out to the garage or isolate PME and then TT the building. Just had me...
  19. M

    PME carport

    Hello Hope everyone if well with this cover-19 stuff going on Quick question I would like to put a power supply to a metal framed car port, the metal frame is buried into the ground so definitely introduces earth potential, the ground inside the carport is tarmac laid on top of soil The...
  20. HappyHippyDad

    Are there any electric vehicle Charge points that can be used with PME?

    I am looking to fit a EVCP in the customers garage. The earthing system is PME although it would not be too hard to change the garage to TT. I have 3 questions. 1. Can the PME be used as long as the EVCP is located in the garage so that the car cannot be charged outside? 2. I believe there...

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