Old and new electric cable colours

[geezer01]

Hi guys just a simple question. When replacing some floorboards I cut part way through into some old electrical wiring for the ring main. The colours were red, black and yellow/green for 'earth'.

I have taken that section of cable out in between the sockets. My question is do I have to use the older style red/black cable or can I use the modern blue/brown cables to complete the ring?
Thanks in advance!

 

[DaftPunk]

New colours is perfectly fine. You should really attach a warning label at the consumer unit to warn about mixed colours, but in this day and age everyone working on electrical installations ought to expect this anyway.

 

[333rocky333]

Use new colours and you put a cautionlabel on the fuseboard, though if you have old stock cable i feel you could use that, but others may have different veiws

 

[geezer01]

could i just not wrap the new wires in the appropriate coloured insulation tape?

so tape the new blue neutral in black tape?

 

[DaftPunk]

No just leave them as new colours.

 

[333rocky333]

If anything you would mark the old cables with a ring of tape colour of the NEW cables, if both join in the same socket/ enclosure, though I feel noone bothers nowadays

 

[EFLImpudence]

514
Identification and notices.

514.1.3 ...
NOTE Appendix 7 gives guidance on how this can be achieved.


Appendix 7
2.1 An addition or alteration made to a single-phase installation need not be marked at the interface provided that:

i) the old cables are correctly identified by the colour red for line and black for neutral, and
ii) the new cables are correctly identified by the colour brown for line and blue for neutral.

 

[geezer01]

from my understanding that means i dont need to do anything ...just replace with the new cable

 

[JohnW2]

from my understanding that means i dont need to do anything ...just replace with the new cable

... and, as has been said, if one does not already exist (and if you want to be fully compliant with regs), put a warning label on your CU indicating that there are 'mixed colours' in the installation. As has been said, those labels are essentially daft, but the regulations theoretically require them!

Kind Regards, John

 

[333rocky333]

http://www.ebay.co.uk/itm/Wiring-Co...ectrical_ET&hash=item51b8483981#ht_1919wt_867