Sleeving SWA on a single phase supply

[trypod]

[FONT=&quot]What is best practice when replacing an existing SWA cable 3 core (old colours) with a larger SWA cable 3 core (new colours?)[/FONT]
[FONT=&quot] Both the house and garage wiring are in old colours (single phase)[/FONT]

[FONT=&quot]A) [/FONT][FONT=&quot]Would you sleeve the cable Blue sleeving on Grey and Earth sleeving on Black[/FONT]
[FONT=&quot] so the cable will be Brown, Blue and Green /Yellow[/FONT]
[FONT=&quot] Or[/FONT]
[FONT=&quot]B) [/FONT][FONT=&quot]Red sleeving on Brown and Earth sleeving on Grey [/FONT]
[FONT=&quot]so the cable will be Red, Black and Green / Yellow[/FONT]

 

[Darkwood]

Mark both ends up with appropriate (2 colour codes exist.....) sticker, sleeve new cable as needed and mark up neutral with a (n) at both ends existing circuits can be left then .

 

[Guest123]

I'd use new colour sleevings and just make sure that you apply mixed colour warning lables on DB's and maybe the joint if it's an adaptable box for example.