La Poste
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If the DNO comes out could they refuse to repair the earth and remove it if the water is not bonded.
The gas is bonded ( I think to the wrong side of the meter, the meter is inside a cupboard, I need to double check this) but the water is not bonded.
It's not TN-C-S but I wonder how dimly the DNO would look upon this.
Thanks.
The gas is bonded ( I think to the wrong side of the meter, the meter is inside a cupboard, I need to double check this) but the water is not bonded.
It's not TN-C-S but I wonder how dimly the DNO would look upon this.
Thanks.
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La Poste
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Now that is much easier said that done!!!
God knows how I'm going to manage that.
It's all concrete floors and laminate flooring with the DB in the middle of the house.
The house has been extended many times in an outward direction from the DB and their is no accessible avenues left to it.
I think I really need to explain all this to the customer before I do anything else.
God knows how I'm going to manage that.
It's all concrete floors and laminate flooring with the DB in the middle of the house.
The house has been extended many times in an outward direction from the DB and their is no accessible avenues left to it.
I think I really need to explain all this to the customer before I do anything else.
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G
Geordie Spark
The chances are the DNO may not notice or even care about the water bonding. What they may say is that the installation was not supplied with an earth terminal and someone has tampered with their cable to get one. They will then procede to remove the clamp and leave the installation with no earth and the cutout fuse removed. You (or the customer) will then have to pay for a PME terminal to be supplied (if PME is available in your area). They may provide one but it really depends who you get.
With such a nice low Ze I would suggest if it aint broke dont fix it.
Note it on PIR, EIC, or MW as appropriate
With such a nice low Ze I would suggest if it aint broke dont fix it.
Note it on PIR, EIC, or MW as appropriate
D
Deleted member 26818
There's a good chance, that it's not TN-S.
Looks like a split concentric cable, and it appears that both the neutral and earth conductors have been terminated in the neutral block.
I'd consider removing the clamp, and terminating the earth in the neutral block.
Looks like a split concentric cable, and it appears that both the neutral and earth conductors have been terminated in the neutral block.
I'd consider removing the clamp, and terminating the earth in the neutral block.
I would say that the installation was orininally a TT earthing system and someone has added the clamp.
I have never seen any split concentric paper insulated lead sheathed cable around here before.
It was used many years ago when DC was distributed, it was concentric three phase cable interesting stuff to work with by all accounts.
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Engineer54
I can see where your coming from looking at the photo again, but i personally haven't seen a concentric DNO cable of the same make-up as shown. never seen a lead covering incorporated within one either, sort of defeats the point of a concentric cable.
What it looks like to me, is a badly terminated cable, the orientation of the cores being wrong and the terminator deforming/crossing cores to line up on the cut-out fuse and neutral block. The breakout heatshrink trousers making it look worse from being twisted at the breakout position.
But i could be wrong!! ...lol!!
K
Knobhead
At a rough guess that clamps been there 20+ years looking at the way the cables been dressed. It’s probably been there since day one.
Don’t worry about it and for god’s sake don’t play about with it.
Under the bituminised tape around the cable crotch will be resin-impregnated tape, over the years it gets brittle. Crack that and damp will get in to the papers. Then after a while BANG!
Get the rest of the earthing up to scratch.
Don’t worry about it and for god’s sake don’t play about with it.
Under the bituminised tape around the cable crotch will be resin-impregnated tape, over the years it gets brittle. Crack that and damp will get in to the papers. Then after a while BANG!
Get the rest of the earthing up to scratch.
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Looks like theres another CU elsewhere as being as there is another set of double insulated tails in the henley block.
I've never dealt with DNO's, but can't he call them to upgrade the meter to a digital one, (done free round here last couple of years) and install an isolator at the same time? or is this just showing my ignorance??
Problem is that if its TT on there records they will remove the clamp and disconnect the supply until all circuits are rcd protected and a rod has been installed.
The op could ring the dno and see if they have any records as to earthing arrangment at this property, they should have records for all properties in thier area (good luck with this one)
K
Knobhead
It will have been TN-S, it’s a paper lead cable. The give away is the way the cable crotch is taped, that’s not a new fangled heat shrink termination. As I said in a previous post for gods sake DO NOT play about with it. The separate L / N blocks are typical of early 50’s supplies. My first house had them.
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La Poste
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I won't touch it but I do think the tiny little screw securing the main earthing conductor to the clamp looks a bit unreliable (I think that's an under statement).
It would be nice if I could find a way of making this connection more secure without risk to the cable itself.
It would be nice if I could find a way of making this connection more secure without risk to the cable itself.
La Poste
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While we are on the subject this is my parents house.
TN-S and the same sort of clamp although the main earthing conductors look much more secure.
ELI 0.3 Ohms, the transformer is on a pole in the field out back.
If the clamp on the previous post and property looked like this I would feel a bit better about it.
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Engineer54
You could well be right about it being tape. If it is tape the installer made a super job of amalgamating it, looks as good as a heatshrink trouser breakout.
Oh and heatshrink breakouts are not new, they have been about before i came into the industry. All of the multi core cables entering the switchboards in my old company were fitted with them. They were made from a different material than they use now, looked and felt like a rubber compound in those days. and were sized to the specific cable size unlike today where a size fits numerous cable dimension sizes.
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La Poste
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I think a bit of trunking protecting the cable might be a good idea.
Stop the house wife bashing it with a suitcase hopefully.
It sounds very fragile.
But I want to phone the DNO just to see what sort of earthing they say the house has got.
I'll let you know what they say.
Thanks.
Stop the house wife bashing it with a suitcase hopefully.
It sounds very fragile.
But I want to phone the DNO just to see what sort of earthing they say the house has got.
I'll let you know what they say.
Thanks.
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