Small Earth question.

[michael8554]

"easier carry on talking their language, so they understand what you are on about,"

Agreed.

But whenever I reply here to a layman's question I will try to educate by saying eg "fuse box (Consumer Unit or CU)" and use CU in the rest of the reply.

 

[Dairyspark]

So, I was thinking again today (dangerous,I know)

If your 2.5/1 didn’t meet the max Zs value, could you then get past this by fitting an RCBO and using it as fault protection as well as additional?

 

[Fleeting]

Yes you can do this.

 

[Andy™]

So, I was thinking again today (dangerous,I know)

If your 2.5/1 didn’t meet the max Zs value, could you then get past this by fitting an RCBO and using it as fault protection as well as additional?

the issue with 2.5/1 is fault current with a 3036 fuse, not Zs, although high Zs is also a problem but a different one