Earthing through plastic pipe

[John Rumm]

I think their web site must be borked at the mo - all those links just redirect to the home page at the moment for me...

[John Rumm]

It looks very similar to a Contactum insulated CU of about 10 years ago to me...

[Robin]

On 15/02/2020 13:37, John Rumm wrote: <snip>

They have put up a new home page ready for Storm Dennis, and I too cannot now get to the page or photo in the links.

[spuorgelgoog]

Did they use Hager, Moeller, Wylex and MK MCBs too ? :-)

Owain

[tabbypurr]

The job required is on the OP's installation, not a job for the DNO on their equipment.

NT

[tabbypurr]

What's happened to you lately?

[John Rumm]

Yup - they are more flexible in that respect than the later ones.

(can't comment on Moeller, but have a Hager HRC fuse carrier in one of mine, and a pair of MK Type S RCDs).

[Dave Plowman (News)]

I could ask the same of you. ;-)

But if you contact your electricity supplier and tell them the problem I'm sure they'll point you in the right direction.

[Tufnell Park]

I very much doubt that your electricity supplier would guide you on a technical matter such as 'earthing'.

It would be more productive to contact the DNO for his area and enquire if PME is available on their network. If avaialable the DNO are obliged to provide PME to the terminal cutout. There may be a standard charge for doing this.

[Dave Plowman (News)]

Try it and see.

[Tufnell Park]

It's not worth the bother, provision of PME is the responsibility of the DNO (distribution network operator).

Your electricity supplier merely supplies you with electricty, for technical matters they may refer you to the DNO, but you will have made

2 calls where one would have done.

[John Rumm]

Well its both... You could wire up your installation as if it were TN-C-S, but that would not be a sensible thing to do if the DNO had not constructed or upgraded the local distribution network to support it.

[Robin]

+1

[Robin]

Depends what "the job" is. Getting PME (if it isn't there already) is a job for the DNO on their equipment, and some at least will check it for free. (IMLE they don't always have records, or trust what they do have.)

There may be other jobs on the installation - eg bonding, earth rod - but that doesn't militate against using the DNO.

[tabbypurr]

You could, but I'm not the one displaying warning signs of dementia

[tabbypurr]

all that's required is to equi bond the water pipe. AFAIK suppliers don't provide neutral earth terminals on non-PME supplies.

NT

[newshound]

Good point. IIRC my overhead supply was replaced with an underground one soon after I moved in (31 years ago).

[John Rumm]

Yup sorry, I think I misread that last post slightly. Assuming in the OPs installation its confirmed as the supply being PME, then indeed all that is required is replacing the missing bond.

My comment above is the more general version - that if the supply status is unknown, the enquiry wit the DNO may be the only *sure* way of establishing if its safe to make use of the suppliers neutral for the local earth.

(The type of cutout does not tell you much since they often the same type for all TN supplies - the only difference being whether the internal link joining N & E is fitted).

[Dave Plowman (News)]

Then a phone call to your supplier will likely point you to the correct one.

I'd guess the 99% of the population that you have quoted earlier are likely to approach their supplier first, with any problems?

[Dave Plowman (News)]

In your case, it might be difficult to diagnose.