O
oldtimer
Hi all can you give me some clarification on earthing when changing a CU.
1. Do you have to upgrade the main earth to the water and gas pipework to 10mm or can you use the existing 6mm.
The reason I ask is that I am getting conflicting reports saying yes you do o no you dont ? .
2. Can you loop say a main earth from the water pipework to the gas pipework.
3. Main earth from DS should this be 16mm or can you use 10mm.
1. Do you have to upgrade the main earth to the water and gas pipework to 10mm or can you use the existing 6mm.
The reason I ask is that I am getting conflicting reports saying yes you do o no you dont ? .
2. Can you loop say a main earth from the water pipework to the gas pipework.
3. Main earth from DS should this be 16mm or can you use 10mm.