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pme

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  1. F

    Pme question

    While walking the dog local to some stables which were of the beaten track ,I was looking at how some of these houses got there electric supply thet were over head supply's .so I was thinking they must be tt systems but then I started noticing telegraph poles ,but electric ones with yellow signs...
  2. M

    Location of PME Links

    Hey pepes. I'm a bit new to Ryefield boards, so maybe an obvious one. While installing the Ryefield boards in the risers to feed the flats in a tower block (40 floors), we were told to remove the PME links from within the boards. Should there only be a link at the supply, as it is a PME system...
  3. Gazthesparky

    Best way to get new PME Earth connection

    On a previous thread I started a while back I needed to install a earth rod as a temp measure and it was pointed out to me that people have phoned the DNO and they came out quick and installed a PME connection so I'm just asking the best route to go to do the same. The Sanario is I'm heading...
  4. A

    Meter move tns head now tncs. Is it pme.

    The 3 phase service cut out for my block of 3 flats was recently moved. The service head used to be tns. The new service head is tncs. This has not been marked up as pme. My flat has a new 16mm earthing conductor(connection between old MET and new MET) , however the other 2 flats only...
  5. I

    PME & TNS supply in same building

    Hello all, Have been doing some work in a large building complex, the original building has a TNS supply but the large extension to the building has a seperate PME supply. At present there are no main protective bonding conductors to water/gas/oil and these services are common to both old and...
  6. A

    PME Earth supply

    Hi all - I am looking for some guidance around the MET for a PME installation. I am doing my first new build, which has had the supply installed, including meter and 100amp switch, however there is no earth wire provided? Is it the suppliers responsibility to supply the earth to a MET, or is it...
  7. N

    TT to PME problem.

    I had UK power Networks round to test whether my TT earth could be changed to PME at my house which it is now. They told me all ok and get utility supplier meter engineer to connect up. Called utility company, they said we don't do that. Just get electrician in to connect it up. I pointed out...
  8. S

    PME or TT ?

    Hi Everyone, New to the site, newly qualified Part P installer. I have encountered two properties which appear to be TT systems with ZE readings of 65 and 100 ohms, on live testing ring main ZS results 0.5ohms and 0.56 ohms. There is no PME earthing connections at DNO cutout fuse. Does this...
  9. T

    Exporting pme (tncs)

    Hello all I've got a quick question!! im currently working in a holiday building,wiring a boiler and bonding main water/oil,the building is fed from the owners house next door, it's supplied by 25mm tails and a 16mm earth, the cables run along a joist from the main house outside along the roof...
  10. S

    Electric Vehicle Charging & PME

    I will shortly be installing POD Point Electric Vehicle Charging units and I am very confused by the earthing requirements if the property has a TN-C-S Supply. I have read the installation manual of the POD Point, Amendment 2:2013 of BS 7671:2008 and the IET Code of Practice for Electric...
  11. S

    Questions about PME

    Hi I'm on my last year of my apprenticeship and throughout my 3 years I've literally asked everyone I've worked with this question about pme systems. if the PEN conductor fully breaks (near impossible I no because it's concentric but let's say in the metre for example) your return path is going...
  12. D

    exporting pme

    Hi all this is my first post on here and any help would be great this question is starting to do my head in and Ive looked through loads of previous posts as I know its been covered before. I hope I have given enough information and explained it correctly. I have a 95mm pme supply to a control...
  13. Mark.W

    PME for farm buildings

    Hi chaps In need of some advice please! I'm on a job at the moment (installing 50kw PV) where the customer is upgrading his supply with Western Power! He currently has a 100A 3ph supply and his new supply will be 250A 3ph! The customer has a dairy farm! The existing earthing arrangement is...
  14. S

    Pme

    Ok, I have a basic understanding of electrical issues, but what I don’t figure is the PME system. The earth is connected to the neutral in the meter box, now if we touch the earth wire its ok, yet touching the neutral is a bad idea…zapp. so with the earth connected to neutral (and copper...
  15. K

    Identifying a PME system

    This may seem like a daft question but when looking to establish whether or not a supply is a TNC-S supply (PME) can you assume that where you have a new service head which has the link to for earthing conductor by incoming neutral that this is a PME supply? Can you get a case where although...
  16. G

    Pme not

    went to do some work for a relative today,change CU and a few odds and ends in a small shop which they have just rented,the landlord is a distant relative of theirs and has said they can do what they want.Anyway I was doing a few tests and found that the Zs on a radial was 400 ohms,Disconnected...
  17. R

    TT change o PME???

    Hi Guys, Called out yesterday to a fault at a rental property where a cowboy has been at work. Fault I was called out for was that whenever something was switch on then the rccd would trip also upon inspection the rccd test button would not operate. Now upon contacting the cowboy to find out...
  18. polo1

    PME supplies

    Guys, was there a "typical" csa for tails and main earth in older PME installations, say 60amp cut-out? Regards. PS I know that this is the DNO's responsibility, but I want to get a flavour of what was the norm.
  19. S

    Earthing pme

    I have just done my first mains change over and the supplier installed pme but did not provide an earth. There is an earth terminal on the cut out but there is no way of getting a cable in to it. Not sure what I should do. Any ideas?
  20. B

    Two houses sharing one PME connection.....

    Been to a job today to which I have been conducting a EICR on behalf of a agent who have acquired a property, well turn up and start with earthing and bonding. I would say recently converted PME system. ZE fine at 0.21. Then bonding, other than the main earth 3x 10mm earth cables. Gas, Water and...

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