Lyle, I don't disagree with what your last post, except that the "occasional hookup" is often not really that occasional - they are often left connected for extended periods, sometimes months.


However, you will grasp from my post that I don't think we should be throwing in a separate TT earthing system ... particularly in small curtilage properties, I don't think it's an option - and neither is converting the whole property to TT on many residential streets and roads.


Possibly a separate debate, but perhaps we should be moving towards open-PEN detection devices, developed for EV charging systems, as a better compromise in situations where caravans or mobile/transportable units are to be powered from premises in built-up areas with PME supplies? The ESQCR is perhaps a blocker, at least "officially" to a potentially safer approach for such hookups in dwellings.

Lyle, I don't disagree with what your last post, except that the "occasional hookup" is often not really that occasional - they are often left connected for extended periods, sometimes months.


However, you will grasp from my post that I don't think we should be throwing in a separate TT earthing system ... particularly in small curtilage properties, I don't think it's an option - and neither is converting the whole property to TT on many residential streets and roads.


Possibly a separate debate, but perhaps we should be moving towards open-PEN detection devices, developed for EV charging systems, as a better compromise in situations where caravans or mobile/transportable units are to be powered from premises in built-up areas with PME supplies? The ESQCR is perhaps a blocker, at least "officially" to a potentially safer approach for such hookups in dwellings.