Moving db with no cpc in lighting

[Simon-0116]

Replaced a db on a tt system, but moved it about 1m.
All circuits were required on rcbo.
So I've extended cables.
Now one lighting circuit has no earth.
Obliviousy I know existing it's ok to have no earth if class 2 fittings, relevant sticker notices in place. BUT because I've worked on circuit by extending were having debate at work.
To me it's safer now as on rcbo.
BUT other spark says if cables weren't extended he be happy but because I've extended then it needs earth at least to first point, which seem daft to me.
Any clarification on point.
Thanks

 

[Wilko]

My 20p worth - it is safer now but you've needed to alter that circuit and so it needs to meet regs.

Further thought - by regulation does the entire altered circuit need to meet current regs or just the extended part? Similar to adding an outlet with surface cabling and providing the RCD at the new outlet.

 

[Bob Geldoff1234]

It depends on whether the customer wants to pay to have the lighting circuit rewired.It he/she doesn't then make a note on the cert and also on your invoice and get them to sign it.You cannot be expected to rewire it for free.

 

[Baddegg]

Wasn’t there a thread on here recently with some good but very decisive answers on basically the same subject..

 

[sparksfly]

You are right Simon & I agree with Bob Geldoff ("tell me why?")
You do not have to amend the existing circuit, you can terminate the CPC on the extended cable to earth bar and note it on cert and to the customer.

 

[Deleted account]

Hi Simon, in the real world that most of us live sometimes the customer just cannot afford a re wire.
This is a big problem in the domestic installation world.
In industrial and commercial I would say stick to letter of law ( non statutory).
At end of day it's safer. Just make lots of notes on certs to cover arse.

 

[Simon-0116]

Hi Simon, in the real world that most of us live sometimes the customer just cannot afford a re wire.
This is a big problem in the domestic installation world.
In industrial and commercial I would say stick to letter of law ( non statutory).
At end of day it's safer. Just make lots of notes on certs to cover arse.

It is commercial, old out house type building, customer says never use it but wants it connecting.
Also 16a 3ph socket without 30ma rcd, but he's acement it's fine as now got 100ma up front. BUT I'm going to write on cert that he's happy without 30ma on 3 ph socket.

 

[Andy78]

It is commercial, old out house type building, customer says never use it but wants it connecting.
Also 16a 3ph socket without 30ma rcd, but he's acement it's fine as now got 100ma up front. BUT I'm going to write on cert that he's happy without 30ma on 3 ph socket.

If the no cpc circuit in question is for an unused outbuilding I would have thought an easy rewire.
There is no exception for dwellings for additional protection for sockets. You can't just write on the cert "I have deviated from the regulations because the customer said so"

 

[Bobster]

You can't just write on the cert "I have deviated from the regulations because the customer said so"

Of course you can.

However if it kills someone it'll be no defense in court.

 

[Andy78]

Of course you can.

However if it kills someone it'll be no defense in court.

I suppose that's what I meant.

 

[Bobster]

I suppose that's what I meant.

I'm just being an a$$

 

[davesparks]

Now one lighting circuit has no earth.
Obliviousy I know existing it's ok to have no earth if class 2 fittings, relevant sticker notices in place.

It's not OK, and it is not compliant with bs7671. The idea that a sticker and an RCD makes it all OK was dreamed up by the esc as an absolute last resort for exceptional circumstances.