Are PME and TN-C-S supplies exactly the same? Or does PME also have requirements regarding the number and relative location of suppliers earthing rods?
I am thinking here where the DNO replaces a length of failed 4-core (3-phase + Neutral) PILC cable with Wavecon or similar cable which has a combined Neutral and Earth conductor. The average consumer would not know that their electricity supply's method of earthing had been changed.
Clive.
