Hi Ragner,
I'd like to put my spoke into this wheel.
Over here in NZ, there are moves (from I don't know where), to maybe convert us to a TT supply system, when we currently use the TN-C-S (Multiple-Earthed Neutral), this is the same system used in Australia and it works down here, why change it?
AFCI's are not going to do a damned thing for anyone, it will save no more lives than a smoke detector, but it will end up being bypassed when it gives false trips.