pme

  1. 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...
  2. 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
  3. 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...
  4. 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...
  5. 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...
  6. 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...
  7. T

    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...
  8. 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...
  9. 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...
  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. Pretty Mouth

    DNOs forbid PME earth being exported???

    https://professional-electrician.com/technical/stroma-certification-supply-chain/ In the 1st paragraph of the above article, it states "some Distribution Network Operators (DNOs) may forbid their PME earth being exported from the supplied building.". I hear this repeated a lot, or "you must...
  12. K

    Can I test for PME?

    Currently doing an EICR on 2 neighbouring propertys... 1 had a new consumer unit done within the last 5 years and 1 has the original unit. These property's are supplied overhead and the original unit has a TT system installed. The Electrician that has installed the new unit has left the TT...
  13. W

    TT or PME?

    Evening all, I’m currently looking into running a submain approx 100m buried from a PME supply to a small outbuilding (timber frame, metal sheet clad) that is being used next to a glamping tent as a place to cook and shower etc. The sub main will be a 16mm SWA..I was initially going to run a 3...
  14. 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...
  15. G

    2365 Level 3 Design Project. Volt Drop feed to Summer House and earthing

    Afternoon Gents, just a query regarding volt drop and extending the equipotential zone on a PME in the level 3 design project. In my design I used a 16mm armoured and the associated volt drop was 5v, this left 1.9 volts for the lighting ring in the summer house. Tutor said not to worry about...
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