No earthing on lighting circuit

[Risteard]

There’s a requirement to provide labelling at the DB for circuits with high protective conductor currents but no such label exists in bs7671 so it’s a similar situation label wise I mean.
The label for protective currents above 10mA is required by bs7671 in section 543 and is mentioned so perhaps that is indeed the big difference between the 2.
Often labels required are not actually in the wiring regulations themselves.

OK, but the fact remains that not having a cpc terminated at every point in the wiring is not permitted by BS7671 for an ADS system.

 

[Ian1981]

OK, but the fact remains that not having a cpc terminated at every point in the wiring is not permitted by BS7671 for an ADS system.

No that’s a fair point

 

[Deleted member 26818]

As you are not installing the wiring then you don’t have to run a CPC and terminate the CPC at every point.
What you should do is provide RCD protection along with plastic accessories and the label.

 

[Taylortwocities]

What you should do is provide RCD protection along with plastic accessories and the label.

Agreed, I was going to raise that. Given the suspected age of the installation I would suspect that there is no RCD protection. I would want that, for a rented property, on the sockets at least.

 

[DPG]

Agreed, I was going to raise that. Given the suspected age of the installation I would suspect that there is no RCD protection. I would want that, for a rented property, on the sockets at least.

It shouldn't really make a difference as far as RCD protection if the person has bought or is renting the house. But I know what you mean.

 

[KevinH]

Thanks for all your helpful advice.
Just to clarify to the last few posts regarding RCD protection, I was planning on replacing the CU and ALL circuits would have RCD protection.
I would not be altering any cables in any circuits, just replacing accessories.
Also, I planned to replace all switches with plastic ones and use the push in plastic screw covers usually supplied with them, also all switches would be mounted on plastic surface backboxes to maintain the best insulation I can.
On a similar note, i'm surprised that they don't make labels to mount on/near the CU to warn of no earthing on lighting circuits, as i'm sure this is a common issue in very old properties. I'm assuming its just a case of getting the labelling machine out and typing something to that effect.

 

[Deleted member 26818]

It’s not a question of the labels not being made, more a question of them not being prescribed by BS7671.

 

[KevinH]

I stand corrected on my last post, turns out they do make "no provision for earth" labels. I just ordered some. I should have checked before sending post, oops.

 

[DPG]

Makes sense that someone has started knocking them out.

 

[Ian1981]

Makes sense that someone has started knocking them out.

Niceic do them with of course their logo on them

 

[Harry_P]

Hi all, I've been asked to make an old 4 story townhouse "safe" and issue cert for renting out.
Hasn't been touched for so long it has bakerlite accessories with wood backing!
Straight away I'm seeing replace all accessories, replace CU, upgrade earthing. The wiring is all in PVC cables but typical no earthing on lighting circuits.
I hear you all scream "REWIRE"!
Problem is property is highly decorated and furnished and owners would rather not go down that route.
My question is, if I fit all plastic accessories throughout, and clearly state on CU and cert NOT to fit any metallic fittings. Can I get away with that?
Just asking as whenever I've come across this problem in past, I've always rewired lighting so bit unsure what complies.
By the way, I've done quick IR, ring loop tests, Ze etc and all ok, but how do you R1+R2 lighting with no earth?

Personally I would be advising that if you want it making safe then there is going to be some rewiring needed,the place may be decorated but that's not your problem, you have been asked to make it safe and I wouldn't feel like I have made it safe by installing fittings with no earth.

 

[Taylortwocities]

Makes sense that someone has started knocking them out.

What a pity they didn't run a spell checker over the text before going into production

 

[Andy78]

What a pity they didn't run a spell checker over the text before going into production

Maybe the printer had a lisp ?

 

[ipf]

Maybe the printer had a lisp ?

Should that be 'lishp'?

Had a situation a while ago, I think I mentioned it on here, where I changed a CU for a friend. Wiring to one light under the stairs (I put it on it's own cct) had no earth. I showed the NIC inspector and he agreed it was OK, with appropriate label.

 

[Pete999]

Niceic do them with of course their logo on them

Course they do.

 

[Ian1981]

Course they do.

You missed my sarcasm Pete

 

[Deleted member 72666]

I stand corrected on my last post, turns out they do make "no provision for earth" labels. I just ordered some. I should have checked before sending post, oops.

View attachment 47217

Where did you get yours from?

 

[Pete999]

You missed my sarcasm Pete

Come on it is early doors Ian give me a chance

 

[DPG]

What a pity they didn't run a spell checker over the text before going into production

Can't believe I never noticed that mistake!

 

[Andy78]

I have some of those labels that have been in my bag for about 6 years I think. Someone gave me them.