Conversion to TNCS within property. A concern? And EICR code?

[Rockingit]

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ESQCR s8(4)
A consumer shall not combine the neutral and protective functions in a single conductor
in his consumer’s installation.

And I think I'd have to C2 that.

Although, having just thought about that one for a few minutes, it actually reads going the other way around - so going from seperate Neutral and EC to a CEN/PEN. This is also reinforced by 543.4 and GN8 says nothing. Which therefore means no code .

I'm also slightly confused, given that TN-S is relatively rare for domestics, as to how they've ended up with just LN in the first place. Definitely need some pics of the intake and meter to make sense of this.

 

[Rockingit]

I have seen this a few times in large blocks of flats where it’s been converted in the mains room and just done that way in the flats .

That's as part of a BNO system under different rules. Ryefield boards have a removable link in them between the incoming N and a PEN arrangement to create TN-C-S, the same as in a DNO PME head.

 

[MickSmith5824]

I have seen this a few times in large blocks of flats where it’s been converted in the mains room and just done that way in the flats .

Why if it's been converted in the mains room would it need to be converted again in the flats?

 

[Gavin John Hyde]

Around here if you find a DIY pme set up wpd will come and repair the tns earth if missing or damaged and sometimes replace the head. If you want one they charge unless it's easier for them. As long as there's a dno earth they have to maintain it.

 

[Burtones]

Are they sheathed? If that's just insulated cable then C2 for that anyway.

 

[Leeroy]

Why if it's been converted in the mains room would it need to be converted again in the flats?

For the earth in the consumer for flat circuits .

 

[Leeroy]

 

[Leeroy]

View attachment 62637

This was from today they had converted in mains room and also ran an additional earth to the flat .

 

[MickSmith5824]

This was from today they had converted in mains room and also ran an additional earth to the flat .

Thanks. So is that before the meter or after?

 

[Leeroy]

Thanks. So is that before the meter or after?

All after the meter .