Hi
Can’t find the original posting, but, I did promise you some reading material on earthing systems. Use this link http://www.theiet.org/publishing/wiring … /mag/2005/
Select ‘earthing your questions answered’.
You will need to download the file.
I will see if I can find something about Protective Main Bonding as well.
Then, I will follow up with something on EFLI testing etc.
Have fun reading 😉
Regards