Perhaps you can shed some light on this condition for TNCS systems in the Irish Rules. I can only see that as RE decreases RB becomes more onerous but to be honest I am not really getting the essence.
So if the supply is TNCS-PNB the relationship between the network and consumer earthing may not satisfy the requirements, so does that affect the installation methods in Ireland?
If we were now installing earthing to installations supplied by a TNCS system and achieving 4.07 ohms or less as was the proposal to reduce touch voltages then the suppliers earth rods resistance would have to be 1 or less, would that be achievable if you combined the two separate requirements?
So if the supply is TNCS-PNB the relationship between the network and consumer earthing may not satisfy the requirements, so does that affect the installation methods in Ireland?
If we were now installing earthing to installations supplied by a TNCS system and achieving 4.07 ohms or less as was the proposal to reduce touch voltages then the suppliers earth rods resistance would have to be 1 or less, would that be achievable if you combined the two separate requirements?
