I'm trawling through the links and I have to confess they're doing my head in but I'll get there in the end.
The idea of an independent earth completely separate from everyone elses shoddy wiring and potential earth faults is very appealing.
The idea of not importing other peoples **** into the house is also very appealing.
The idea of being insured against a potential lost neutral at the supplier end is again very appealing.
It's just the high resistance to earth of the rod that spooks me.
With a phase to earth fault inside the house the prospective fault current would be so low that no MCB's would operate and I would be solely and completely reliant on RCD's.
One other thing that confuses me.
People keep saying you should never mix earthing systems IE you should never mix a rod with TNCS, the bonding in the house, the gas and water, if they are metal which they are in this house, they are acting like an earth rod anyway. The earth fault loop resistance of the earthed metal work is 18 ohms I know I have measured it, what is that if it isn't an earth rod?
This metal pipework will act like an earth rod and so when (if?) the house is connected to TNCS there will be a mixture of two earthing systems.
Anyway, I shall continue my studies on this matter.
Cheers.