Paul,
We use the TN-C-S if my interpretation of the term is right.
TN-C-S systems where the neutral and protective functions are combined in a single conductor but only in a part of a system.
Is this the correct interpretation of TN-C-S?
If so thats the system we use in Australia.
We use a MEN system where the neutral is bonded to earth at Transformers, every few poles and at the earth stake at the consumers residence.
Am I right to understand if that system is used in the UK, you must have a voltage operated ELCB protection on the Main switch in case you get an open circuit main neutral?
If so we are not that fortunate here as a broken service neutral can result in a raised potential of any earthed metal part and there is no protection to stop this happening.
