No CPC

[New2Game]

If a dwelling does not have CPCs on lighting circuits, installed before 1966, can the circuits be extended to add more lights or does earths have to be added to the circuits?

 

[Spark123]

You can't really use twin and earth to extend with!!
I'd say that it is of the age where a rewire is probably the best way forwards anyway.

 

[securespark]

Not if you're installing to the regs.

 

[Cremeegg]

The ECA do a good booklet on consumer units changes when encountering lighting circuits without earths - don't have the link at present but its worth reading and is I think published with NICEIC and others as well.

 

[Lectrician]

Dont extend - add a new cct.

 

[Taylortwocities]

There is useful info and food for thought here: http://www.electricalsafetycouncil.org.uk/pdf/BPG1_aug07.pdf