Some comments here are worrying including the OP. If the DNO has not provided an earth facility then the supply is TT end of. The OP says a block of flats so is it that no flats are earthed? What work is being done for the question to be asked?
 
I was under the impression the block riser/incomer is earthed an it is the sub mains to the dwellings that has no earth cable? Surely?
 
Hi, im only just recently qualified and have come across a situation I have never experienced yet, in a block of flats in the hall are the meters that then go off to a switch then cables run into the house, there is no main earth in the house!! the tails are about 10 - 16mm cant remember now sorry. so I was wondering who has to run the earth in and if its me what size earth 10mm ? just want to clarify and what tests do I do and results should I get to be able to pme the system ? thankyou

YOU CAN'T MAKE YOUR OWN PME

you can pme it if you get less then 0.35 I believe ? granted your not ment to but aslong as the area can be pme'd, then whats the problem ? its been tested pull the fuse, connect it up put fuse in and re-seal then your laughing :)

YOU CAN'T MAKE YOUR OWN PME

thankyou, so whats wrong with that ? its been tested, I can pull and reseal meters its a pme area ?

YOU CAN'T MAKE YOUR OWN PME

Have you got the answer yet. Do not try and dabble in things that are both dangerous and illegal.
 
Maybe you need your mate Sintra to give you a hand .. it's over 30 pages long, so could take a bit of shifting.

Waddya mean "not helping" ... I taught ye all you know about soldering !!!
 
Word of warning you just can NOT link NE if the network is not pme , this needs to be checked with the dno, joint in the network that are pme are studded both sides of every joint. If you link in your earth to the neutral block and it isn't PME then any fault potential will come straight down to your point of earth, because you would have created a direct path. CHECK IT OUT.
 
This has to be a wind up. I hope it's a wind up!
I don't know what this thread is but I'm closing it before any more advice on home-made PME techniques comes along.

Just to sum the thread up clearly for those who don't read every post please note this advice;

YOU CAN'T MAKE YOUR OWN PME



YOU CAN'T MAKE YOUR OWN PME



YOU CAN'T MAKE YOUR OWN PME

Have you got the answer yet. Do not try and dabble in things that are both dangerous and illegal.


and this advice;

Word of warning you just can NOT link NE if the network is not pme , this needs to be checked with the dno, joint in the network that are pme are studded both sides of every joint. If you link in your earth to the neutral block and it isn't PME then any fault potential will come straight down to your point of earth, because you would have created a direct path. CHECK IT OUT.
 
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No Main Earth Help
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Electrical Wiring, Theories and Regulations
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sparkie710,
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