Size of earthing lead for 10mm 3 core SWA

[Luka]

I am installing 3 core SWA using a piranha nut. What size of earthing lead to connect the piranha nut to earth terminal do I need? Does it also need to be 10mm or I can get away with 6mm?

 

[westward10]

6.0mm² will be fine.

 

[Luka]

6.0mm² will be fine.

Thank you. Can I just use live or neutral wire from 6mm twin and earth if I mark it as CPC?

 

[westward10]

Thank you. Can I just use live or neutral wire from 6mm twin and earth if I mark it as CPC?

Yes but it looks a bit unprofessional.

 

[Luka]

Yes but it looks a bit unprofessional.

Thank you. I do appreciate it does not look too good but this is only a temporary measure and safety is the only concern that I have at present