Hi Ian , If I am wrong then it implies that Defenitions in the BRB are wrong,,,is that what you are saying ? I have stated virtually word for word what is printed in PART 2.
In Simple language TNCS is a description of the way the DNO distribute the Supply with reference to both the Neutral and The Earthing conductor. It describes that the Earth AND the Neutral are Primarily connected at the Supply Transformer{T] and that they are combined in a single conductor in the distribution System {PEN}, then at the point of use i.e the Installation the Neutral and Earth are Seperately supplied [split}.At this point..this is still part of the System.
THe Term PME is ,as you know, the Term used to describe the way the neutral conductor is used to connect The Earthing Conductor of the Installation to Earth.
I think the correct way to describe what the OP appears to have is a TNCS System [Distribution & Installation} AND PME Earthing arrangement within this System.. .the position whereby it can be termed PME being at the Installation intake position [label usually installed ] the point of my earlier post.I know what you are getting at cos the distribution Neutral cable is repeatedly staked down to Earth
at various points but the term PME is only applicable to the consumers intake cos its refering to the consumers Earthing Conductor this as we know does not extend beyond the Installation..see again BRB Defenition for PME.. Thanks !
