Old DNO supply

[Smithy33]

Hey guy's,

Anyone ever been asked to price up a new db and found this as a main earth?

 

[telectrix]

bloody 'ell think that lot needs ironing out.

 

[Smithy33]

bloody 'ell think that lot needs ironing out.

Lol

 

[Risteard]

I can already hear the accusations of you being "far too dear"!

 

[The Ghost]

What.. wha err. what is it? how does it work where does it go ? Any reading like Zs Ze ???

 

[Smithy33]

I can already hear the accusations of you being "far too dear"!

Lol you know the score! I was hoping for a nice PME or even a scabby old lead TNS not this junk.

 

[Smithy33]

What.. wha err. what is it? how does it work where does it go ? Any reading like Zs Ze ???

TBH Im going to pop back in there and test it as it was only a quick visual. The supply looks like its from OHL's out the front, so I'm guessing at the moment it's some dodgy sort of TT set up. I could be wrong though......

 

[DPG]

Let us know what you find. Daz

 

[Taylortwocities]

Aye, what's on the end of those ratty tails?

 

[FatAlan]

So is that seperate live and neutrals coming in from the supplier? What's the pipe work that it's coming out of? Is it some sort of old TNS set up?

 

[Silly Sausage]

Hey guy's,

Anyone ever been asked to price up a new db and found this as a main earth?View attachment 33879

Should be a quick board swap though, with only one circuit!

 

[Smithy33]

Should be a quick board swap though, with only one circuit!

So is that seperate live and neutrals coming in from the supplier? What's the pipe work that it's coming out of? Is it some sort of old TNS set up?

Hey

So is that seperate live and neutrals coming in from the supplier? What's the pipe work that it's coming out of? Is it some sort of old TNS set up?

Hey,

Yep separate live/neutral from supplier. TNS crossed my mind with the cables being inside it and all. It is or was an old overhead supply which I don't think the DNO supplied any type of earth?

 

[Carl S]

Quite a normal set up for a 1940/50’s OH supply. My great-grandfathers farm was the same. Treat it as TT, you will need a couple of decent earth rods and bond the conduit to the MET.

 

[Leesparkykent]

Is this a flat or house?

 

[westward10]

Is possible that is connected from another DNO supply using conduit as earth. This isn't uncommon have seen flats supplied from a shop below in a similar manner.

 

[Leesparkykent]

Is possible that is connected from another DNO supply using conduit as earth. This isn't uncommon have seen flats supplied from a shop below in a similar manner.

Same here loads of flats and maisonettes in London are done like this that's why I asked if it was a flat

 

[Smithy33]

Is this a flat or house?

Hey,

It's a bungalow

 

[westward10]

Hey,

It's a bungalow

Sure there ain't a shop below it

 

[Smithy33]

I'm back there in a couple of day's so I'm going to climb up into the loft and trace where it is going

Same here loads of flats and maisonettes in London are done like this that's why I asked if it was a flat

Are the earth readings usually satisfactory with these systems?

 

[westward10]

You might find a shop up there. Earthing systems very often TN-S. If connection to conduit is sound then normally okay. If you say yours may of been overhead then the earth to the conduit may well just be earthing the conduit.

 

[Smithy33]

You might find a shop up there. Earthing systems very often TN-S. If connection to conduit is sound then normally okay. If you say yours may of been overhead then the earth to the conduit may well just be earthing the conduit.

That is true, it's going to be interesting to find out.

 

[Silly Sausage]

I'm back there in a couple of day's so I'm going to climb up into the loft and trace where it is going

You might find a shop up there.

Would that be The Borrowers Cheese shop?

 

[westward10]

The answer must be up there, keep us posted.

 

[Smithy33]

The answer must be up there, keep us posted.

Will do

 

[tomspark93]

Nothing wrong with it, never had a problem with it. It's been fine for years...

 

[FatAlan]

Are you a competent bat person? If not you you have to notify the LA prior to disturbing any bats in the loft. It will cost you £500.00 to cover the cost of the post inspection bat interviews.

 

[charlaz angel]

looks like that earth cable is just earthing the pipe.those v.i.r. cables dont like being moved after 60 years

 

[7029 dave]

Hey,

It's a bungalow

Over head supply.?

 

[Smithy33]

looks like that earth cable is just earthing the pipe.those v.i.r. cables dont like being moved after 60 years

Hey,

The home owner is away at the moment so I haven't been able to get back in there yet to investigate (unless they have got another quote?)
Your right about them VIR's though, horrible stuff, I used to do a lot of live jointing on the DNO side and used to come across it feeding street light's.

 

[Smithy33]

Over head supply.?

I asked DNO for electricity 1:500 drawings and schematic's, the area is supplied via OHL's. So Im assuming that is where the power is coming from.

 

[westward10]

Please it is VRI.

 

[7029 dave]

Please it is VRI.

Even VIR.

 

[Smithy33]

Over head supply.?

I asked DNO for electricity 1:500 drawings and schematic's, the area is supplied via OHL's. So Im assuming that is where the power is coming from.

Even VIR.

DNO where I am always refer to it as VIR

 

[westward10]

Vulcanised Rubber Insulation not Vulcanised Insulated Rubber. Tis the rubber which is Vulcanised as insulation.

 

[7029 dave]

Vulcanised Rubber Insulation not Vulcanised Insulated Rubber. Tis the rubber which is Vulcanised as insulation.

Its Vulcanised Indian rubber to my Knowledge

 

[Smithy33]

Its Vulcanised Indian rubber to my Knowledge

This is how I know it....

 

[westward10]

This is how I know it....

Yes this is one term which is incorrect, sometimes referred to as cab tyre. The rubber is vulcanised and used as insulation therefore it is vulcanised rubber insulation, VRI.

 

[snowhead]

I've always known it as VIR.
I replaced miles of it in the late 60's with PVC singles.

If you google VIR / VRI it comes up about 50 /50.
With a few people insisting it's VRI.

I suspect VRI was the original (sounds a better description) and probably Trademarked or Copyrighted by the first manufacturer.
Then all following manufacturers had to use VIR as the description.

However VIR / VRI refers to singles.
TRS is probably the correct title for VRI /VRI singles within a Rubber sheath.

 

[7029 dave]

I've always known it as VIR.
I replaced miles of it in the late 60's with PVC singles.

If you google VIR / VRI it comes up about 50 /50.
With a few people insisting it's VRI.

I suspect VRI was the original (sounds a better description) and probably Trademarked or Copyrighted by the first manufacturer.
Then all following manufacturers had to use VIR as the description.

However VIR / VRI refers to singles.
TRS is probably the correct title for VRI /VRI singles within a Rubber sheath.

Me too in the 70's

 

[The Ghost]

deleted

 

[Smithy33]

I've always known it as VIR.
I replaced miles of it in the late 60's with PVC singles.

If you google VIR / VRI it comes up about 50 /50.
With a few people insisting it's VRI.

I suspect VRI was the original (sounds a better description) and probably Trademarked or Copyrighted by the first manufacturer.
Then all following manufacturers had to use VIR as the description.

However VIR / VRI refers to singles.
TRS is probably the correct title for VRI /VRI singles within a Rubber sheath.

I done abit of Google myself last night and found it to be 50/50. I've only known it as VIR because when I was jointing that's what UKPN called it in their documents.

 

[Sparks1962]

I've seen similar

 

[Sparks1962]

I done abit of Google myself last night and found it to be 50/50. I've only known it as VIR because when I was jointing that's what UKPN called it in their documents.

I've always known it as VIR. Used to be called ' Cab Tyre ' before that.

 

[7029 dave]

I've always known it as VIR. Used to be called ' Cab Tyre ' before that.

In all my years never heard that (cab tyre) or vri. Only VIR

 

[7029 dave]

Tel, Pete, Dave ocd ,Spoon, your views please.?

 

[westward10]

In all my years never heard that (cab tyre) or vri. Only VIR

Well two people recall cab tyre. These things are a bit connected as the black tough rubber sheath on cables was like Indian cab tyre, vulcanised Indian rubber or VIR. VRI is the correct term.

 

[7029 dave]

Well two people recall cab tyre. These things are a bit connected as the black tough rubber sheath on cables was like Indian cab tyre, vulcanised Indian rubber or VIR. VRI is the correct term.

New to me West, learning all the time.

 

[westward10]

New to me West, learning all the time.

My old mentor actually called it cab tyre and he explained the Indian cab tyre bit, might be bull but he was right on most things or at least he told me he was.

 

[Dave OCD]

Tel, Pete, Dave ocd ,Spoon, your views please.?

I've always known and referred to it as VIR Dave.

 

[DPG]

It is referred to as cab tyre in some of the old electrical books I have. Daz