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

    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...
  8. 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...
  9. FatAlan

    Stick to TT or go PME?

    Ok, so you have an old non RCD protected domestic installation on a TT earthing arrangement. Would it be preferable to upgrade to PME if available by the DNO or stick to TT and protect with up front 100mA RCD if the Ze was ok via the rod?
  10. S

    PME or not PME, that is the question?

    Noticed this near me ... I've got to assume it's a pme rod, but not connected. Maybe an old one that they are going to connect to the forthcoming branch off.
  11. Gavin John Hyde

    New EV charger needs no Rod and can be used with PME

    I had an email this week from PodPoint. The new Pod Point Solo EV charger does not require an earth rod and can be used with PME. It has in built DC protection and complies fully with the 18th ed Regs. From what I can see and having done the online little training thing, it is brilliant. Taken...
  12. EalingBadger

    The hoary old topic of PME, TN-C-S and earthing rods (not TT)

    Somewhere along the line I picked up a suggestion from a forum posting or two that the DNO does not like you to connect an earthing rod to his "earth" - even though it is effectively just creating yet another, local to your installation, earthing point for the multiple ones already assumed to...
  13. C

    PME supply block of flats

    Hello Guys I have a 200a 3-phase supply PME bolted to a large ryefield panel, the ryefiled panel then supplies 14 flats within the same building. Each flat is supplied a 63a from ryefild via meters in the form of a 16mm 3core SWA cable. The furthest away is flat 14 at around 25 meters, seeing...
  14. B

    PME exported from mains

    Hi All Just finished an EICR on a big 7 bed property. The incoming supply is PME. They have got the incoming head located approx 30m away from the Consumer Units. There is a Henley block in the mains and a previous contractor has ran a split concentric to a solid link fuse and then done another...
  15. C

    Supply from a PME service head

    i have been asked to quote for a new supply to x4 new build flats and a commercial unit below, i am not to keen on supplying remote buildings from a PME and i am really conflicted about how i choose the earthing conductor and bonding conductor sizes so can anyone help. New service head located...
  16. Gavin John Hyde

    High Ze on PME question

    Come across this on instagram this morning. Any thoughts? Dont have much experience of generators myself, In terms of this question my thoughts were additonal or secondary supply source with a rod skewing readings? Not sure though. Would somebody with experience of generators explain?
  17. S

    Oil service bond metal tank pme

    I have just done an EICR... Havnt finilised coding yet. Property is TN-C-S Incoming oil to boiler... Copper oil line with pvc sheath, buried to metal oil tank sat on slabs on ground (it is not raised up) technical said it should be bonded.... Imo by bonding im taking pme potential out to the...
  18. NDG Elecs

    Free PME upgrades. A common practice now??

    Enquired with NEDL about two possible TT upgrades to PME. I found the screenshot below on their website. It used to cost around 160 quid for the intake to be changed but now it's apparently free. Are other DNOs doing this? Has there been some legislative change?
  19. markythesparky

    History of PME Systems.

    Does anyone know the history or reasoning behind PME and TN-C-S earthing? It came up today and I thought it was worth knowing. Why was it brought in and when?
  20. T

    Earth rod needed for shed supply or pme allowed ????

    should you install a earth rod if running a feed to a shed which is built on timber frame and is all timber , no metal parts and will have no services ie gas or water in it so no need for bonding only a supply for a light and a couple of sockets or can you use a pme earth from fuseboard if the...

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