"Because of this you may wish to upgrade it in some of the other disambiguation lists of this term on one or several of the various sites on the Internet.
I might also suggest that you check out https://en.wikipedia.org/wiki/Earthing_system, where the TN-C-S system is discussed. Herein are mentioned "Protective Earths" and even a reference to "Grounding". However, nowhere in this have I been able to find a reference in this to "Circuit Protective Conductor".
To me, it seems that this term is erroneous, since it is never the "circuit" which is protected and the "conductor", while it IS a conductor, is not provided as a "supply" conductor, but merely as a "drain" to "earth" - in case of a fault."
If you think these things need updating, then I suggest you do it. After all, I'm not being paid to do any of this and have more interesting things to spend my time on. It matters not to me whether you understand the terms or not. If you want to know more - you do the research more diligently.
I might also suggest that you check out https://en.wikipedia.org/wiki/Earthing_system, where the TN-C-S system is discussed. Herein are mentioned "Protective Earths" and even a reference to "Grounding". However, nowhere in this have I been able to find a reference in this to "Circuit Protective Conductor".
To me, it seems that this term is erroneous, since it is never the "circuit" which is protected and the "conductor", while it IS a conductor, is not provided as a "supply" conductor, but merely as a "drain" to "earth" - in case of a fault."
If you think these things need updating, then I suggest you do it. After all, I'm not being paid to do any of this and have more interesting things to spend my time on. It matters not to me whether you understand the terms or not. If you want to know more - you do the research more diligently.