Changing the main earthing conductor

[Steve D]

Just a thought, if you were to change the main earthing conductor for a larger csa, would you therefore be obliged to test all of the circuits as you have therefore changed their characteristics, Zs etc? I know you will have improved them and not made them worse, but I was curious whether you would need to do any additional testing.

I suppose the same question would also be applied if you were to change the tails.

Would you guys just change them or would you do any further testing on all the circuits?

Cheers
Steve

 

[Mr Mark Sparks]

i suspect any change of conductor size would only have a small affect i would do a ze and zs a couple of outlets before and re test them after and if the readings are no worse then that will be enough