Hi, just making sure i have covered all aspects of earthing so to make sure i'll ask the experts(please softus don't have a go at me again please 
)
My mains supply is TNCS(PME)
I have run 10mm for main equipotential to my water connection and oil connection.
All other earthing, supplementary 4mm bonding to elsewhere.
With regards to the supplementary does this need to be exposed for testing,want to hide if possible.
)My mains supply is TNCS(PME)
I have run 10mm for main equipotential to my water connection and oil connection.
All other earthing, supplementary 4mm bonding to elsewhere.
With regards to the supplementary does this need to be exposed for testing,want to hide if possible.
