UK Power Networks say they will fit PME in London, for free, if it's
available and if the house "conforms to the 17th Edition regulations".
Anyone know please just what they mean by "conforms" in practice? Eg
just the meter tails and main bonding? Or the full monty?

Background is that I offered to replace a wall light for a neighbour and
found myself having to try to explain why I wasn't very happy with what
I saw: no supplier's earth; no earth rod; and old bonding disappearing
off to places unknown - very possibly to a bit of the gas pipe which was
replaced in the 1980s and the lead water pipe cut off near the stopcock
in the 2000s.


https://www.dropbox.com/s/x3ci6c6l5s...comer.jpg?dl=0
https://www.dropbox.com/s/ctpzgz308l...nding.jpg?dl=0
https://www.dropbox.com/s/rm74vxgwxg...3.-CU.jpg?dl=0
--
Robin
reply-to address is (intended to be) valid

On 10/01/2018 20:57, Robin wrote:
UK Power Networks say they will fit PME in London, for free, if it's
available and if the house "conforms to the 17th Edition regulations".
Anyone know please just what they mean by "conforms" in practice?Â* Eg
just the meter tails and main bonding? Or the full monty?

Background is that I offered to replace a wall light for a neighbour and
found myself having to try to explain why I wasn't very happy with what
I saw: no supplier's earth; no earth rod; and old bonding disappearing
off to places unknown - very possibly to a bit of the gas pipe which was
replaced in the 1980s and the lead water pipe cut off near the stopcock
in the 2000s.


https://www.dropbox.com/s/x3ci6c6l5s...comer.jpg?dl=0
https://www.dropbox.com/s/ctpzgz308l...nding.jpg?dl=0
https://www.dropbox.com/s/rm74vxgwxg...3.-CU.jpg?dl=0


I would expect just the meter tails and main bonding.


--
Adam

I've never quite understood this earthing issue. I just don't see why
people cannot just add more earth rods etc, and bond them to the existing
earth.
It will do no harm and probably be better from the interference point of
view. Obviously is there is a significant current deliverable voltage
difference between earth, Neutral and the main earth connections, somebody
needs to investigate further for faults.
Brian

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This newsgroup posting comes to you directly from...
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"ARW" wrote in message
...
On 10/01/2018 20:57, Robin wrote:
UK Power Networks say they will fit PME in London, for free, if it's
available and if the house "conforms to the 17th Edition regulations".
Anyone know please just what they mean by "conforms" in practice? Eg just
the meter tails and main bonding? Or the full monty?

Background is that I offered to replace a wall light for a neighbour and
found myself having to try to explain why I wasn't very happy with what I
saw: no supplier's earth; no earth rod; and old bonding disappearing off
to places unknown - very possibly to a bit of the gas pipe which was
replaced in the 1980s and the lead water pipe cut off near the stopcock
in the 2000s.


https://www.dropbox.com/s/x3ci6c6l5s...comer.jpg?dl=0
https://www.dropbox.com/s/ctpzgz308l...nding.jpg?dl=0
https://www.dropbox.com/s/rm74vxgwxg...3.-CU.jpg?dl=0


I would expect just the meter tails and main bonding.


--
Adam

On 11/01/2018 08:52, Brian Gaff wrote:
I've never quite understood this earthing issue. I just don't see why
people cannot just add more earth rods etc, and bond them to the existing
earth.
It will do no harm and probably be better from the interference point of
view. Obviously is there is a significant current deliverable voltage
difference between earth, Neutral and the main earth connections, somebody
needs to investigate further for faults.
Brian


You can add a local earth and bond it to the PME earth, subject these
days to part P etc.

I have such an earth, it is one way radio amateurs can protect against a
'neutral break' in the supply.

The bonding needs to be to the required spec, I checked with my supply
company (this was pre part P) and the installation has been checked a
couple of times since- including recently when our 'main fuse' was
upgraded.



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are depriving those in real need!

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Brian Gaff wrote:

I've never quite understood this earthing issue. I just don't see why
people cannot just add more earth rods etc, and bond them to the existing
earth.
It will do no harm and probably be better from the interference point of
view. Obviously is there is a significant current deliverable voltage
difference between earth, Neutral and the main earth connections, somebody
needs to investigate further for faults.
Brian
I think they can add earths with no problem. The only caveat is that
any outdoor connections should be insulated so they can't be touched,
especially with a PME main earth. I think the suggestion you were
replying to (which has dropped off since you put it after your sig
separator) was that the main bonding would be sufficient to satisfy the
supplier, not that additional wiring might be objected to.



--

Roger Hayter