You're beginning to make me laugh now, so what evidence (published or otherwise) have you got to hand that say's i'm wrong and your 100% right?? None, zilch, Zero,Kindly provide the evidence (published or otherwise) to say you are right and Bs 7671 is wrong then Your basically totally relying on an RCD for your total protection/disconnectionSee 411.5.2. Forget your flowery semantics, and trying to look clever here, as i can remember you and others on here talking about trying to convince some panel you/they were invited too, to lower this numbty 200ohm threshold. So at one time or another, you too thought it an unrealistic value also, but now it's not , ...Right!! ...lol!!!
Another thing, this figure of 200 ohms is talking about stability, now how the hell an Ra value, can be related to stability is something i'd love someone to explain to me?? Can you IQ, ....seeing as your so clever and knowledgeable and experienced on this subject?? I must have missed something along the way, during the 1000's of rods i've been responsible for putting in the ground!! Given that a 30ma RCD will provide EFP up to an Ra of 1667ohms minus final circuits R1+R2 that leaves a comfort zone of 1447 ohms for increase in ground resistance....I'd call that reasonably stable.
As i've said to you and others here.... you do whatever you want to do, so by all means, you follow these published guidance's, but please don't tell me that's it's me that's talking nonsense here, ...because i most certainly am not!!