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Engineer54
Its a thing from the 80's along with staking down gas meters and plastic isolation valves on outside taps.
It funny how thing are dangerous and then not. Don't you love regs
Nope, it's down to the pure ''Scaremongering'' being perpetuated by the few still out there, that consider the PME artificial earth, as being an earthing system that is ready to kill each and everyone that has it installed!!
These herberts would rather see a TT system with crazy Ra values. There is one such guy on another forum, that has actually disconnected a perfectly sound TN-S connection for a 50 ohm TT system!!! Why because he believes that his TN-S DNO cable may have in part, been converted to TNC-S... lol!! There's nought so strange as folk, as they say!!