Another Swa Question Lol

[apprentice87]

How many cores your SWA got??

Anything in the shed that will need to be bonded??

john...

 

[Hayemaker]

its 3 core  Brown, Grey, Black   and there are no extraneous parts in the shed like steelwork metal windows etc 

 

[apprentice87]

Well, as it is 3 core, if you use one core for the CPC, [being 10mm cable and assuming a "normal" domestic supply] you can have any earthing system you like, so long as Zs is low enough.

I doubt metal windows would be extraneous parts......

Define extraneous, and tell me how you would decide is a part was extraneous or not.. What tests could you make.....

john...