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  1. T

    NO EARTH FOUND ... can I change my system to pme myself?

    Think the builder ripped the earth rod out... Whatever happened there's not an earth now. Instead of installing a new one am I allowed to take the neutral from the metre and connect a main earthing conductor in a henley block. The street does have pme available, I checked. Is it legal though???
  2. M

    pme ordered but need to change cu asap

    Hi all, long story short... viewed cu upgrade job and realized non dno pme connection - ze showed 2.2 property just fully decorated and cleaned...as usual! client has tenants moving in before pme can be done but has been ordered to dno nightmare trying to install a rod for TT due to layout...
  3. T

    PME Earth Impedance and RCT times - advice ;-)

    Hi all, great site and sorry for the long post - I'm after some advice as I don't have total confidence in the 4 sparkies I've currently used with regards to the test results on my cert. That said I am not a sparky and if I'm being a total muppet please tell me - I can take it :-)...
  4. D

    PME final circuits question

    I have a query, Im working on some signage that is connected to a PME supply. This is supplied to a leb header by straight concentric 16mm cable and then to and RCD with outgoing circuits to the sign. Now I have just seen that work by others have been carried out in the form of doubling up on...
  5. E

    PME supply

    Hi All, Could anyone tell me why you can't have a PME supply within a metal garage/shed?
  6. B

    PME Swimming Pool, Pond, and Jaccuzi

    Went to look at a job the other day, The customer wants some "electrics" installed for his swimming pool, pond, and jacuzzi. Had a quick look at the existing Jacuzzi supply: this is tapped off of main tails (henley blocks), into Seperate RCD enclosure with 40A MCB. Unable to locate bonding...
  7. B

    pme earthing

    can i take pme earthing outside of a commercial building to supply some containers or am i right in thinking its treated as the same as domestic and i only take live and neutral out and put an earth rod in local to my new supply?
  8. Mr Mark Sparks

    Export pme to portakabin

    Hi factory unit with 800 amp supply 95 mm main earth and 50 mm main bonds portakabin has been delivered as a permanent addition wired on 10 mm 3 core swa and 32 a commando plugs there is a water supply and metal parts. am I right in saying that it will need to be put on a stake as the main...
  9. S

    Export PME or not that is the question?

    So guys I know that this is a frequentley asked question but which way would you do it? The building that requires power installing has extraneous parts by the way. Would you. 1. Devorce the PME earth from the house and install a spike. 2. Use the PME earth from the house within your...
  10. H

    Pme and over head supply

    can you have a PME from a over head supply?
  11. P

    PME and isolators

    Who is responsible for fitting the above, I always thought a supplier could install both. But just been speaking to EON on behalf of a customer and they say they can fit a isolator but it is up to to the DNO to install the PME. :dunce:
  12. K

    PME & Broken neutral

    I know some countries use protection to guard against a broken neutral in PME systems. Anyone know how they work?
  13. S

    Exporting PME to outbuildings

    Hi all, Just wanted to run this past some people, its for a little job im doing (possibly by moonlight). The property has recently (yesterday) been converted to PME when the DNO changed the cut-out. It is a farm and ususally around here they will not give PME to farms. The old service was TNS...
  14. S

    pme export

    its advised to install an earth rod not compulsary unless there is a window in the roof where direct contact could occur, there is argument that bonding class2 equipment could cause a potential too. if the array is not accesible i wont be installing any earth electrode in these circumstances as...
  15. S

    PME install, no CPC

    Hi guys, I've been called to look at a flat in north London. The flat is in a converted piano factory. Looking at the CU, perhaps installed in the 70's or 80's, it has a CPC. All good. Under the CU is a termination box of some description. The tails come up, through metal conduit, into...
  16. D

    ZS in a PME earthed household

    Please be gentle with me it's been a long day. In my previous life I was an electrician, suppose I still am but not practicing installation work. So I am trying to get up to speed with some modern practices, mainly Earth Loop Impedence. In my daily work I constantly use a megger for safety...
  17. K

    They say there are no stupid questions but I might be about to disprove that - PME

    I'm an not that familiar with TNCS systems at all, as almost every system I work on is TNS. My question is this, is there a way to tell if a system is in fact a TNCS system. There is one I am currently working on which is labelled as PME, but rather that taking it as gospel that this means it is...
  18. H

    Pme cut outs

    Is it common to attend a propery with a new PME cut out , to find the main earth still on a rod assume at some stage the supplys been changed ? do the dno not change this over ? I'm guessing a quick phone call to the DNO will confirm supply ? is this something they should then change free of...
  19. S

    Pme

    got a tns at 1 ohms dno will give us a pme for £180 or they say shove a rod in the ground ummm im thinking is there much price in it but the pme is guaranteed the ze on the rod could be varaible with the dryness of the soil what are your thoughts guys.
  20. Top Cat

    Harmonisation of colours, PME & don't snip out cores!

    Changed a C/U today, when i took cover off found live = blue, neutral = red, with cable ties marked L & N in correct position. This was the same at meter so it must have been the meter guy! The meter had a test date of 2006, outside meter box probably fitted about same time. PME must have been...

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