Is the TN-C-S, PME or PNB?
Sorry forgot to answer this question, my installation is PME.
Is the TN-C-S, PME or PNB?
From my point of view, even though I have not seen this referenced, the purpose of increasing the size of the earthing conductor on a PME system is because the earthing conductor may, in the case of the loss of the external supply neutral, carry the installation load current via the extraneous conductive parts.out of interest, what if the supply is Protective neutral bond?
Still TN-C-S but not PME!
Thanks.