TT or PME

[aliensbrains]

Just been to look at a job and found this. It's an overhead supply so could be pme at the post but no earth back to the cutout and (although admittedly i didn't have much time to have a proper look) I didn't spot a rod.

I'm thinking advise the customer to get the dno to come and have a look and fit an isolator while they're at it.

Any thoughts?

Thanks!

 

[Teddy Lop]

I get what you are saying...

I'm guessing the earth rod would be too high resistance to prevent the issues in the event of a broken PEN?

Therefore it would seem sensible to disconnect this cable from the CU and safely terminate? But this presents new issues with having a green and yellow cable that I suspect is tied to the incoming Neutral hanging in the wall.

If it is what you think it is, and a loss of PEN should occur putting 230 onto your earthing, the earth stake is unlikely to worry the service fuse

I'd be inclined to try to see exactly where this mystery conductor goes, I think a parallel path through neighbouring property etc is far more likely than some weird DIY extraneous CNE connection