Sure, I understand that, and the electrician who said that to me was undoubtedly talking specifically in terms of residential installations in occupied houses - which is what he usually worked on. Maybe I'm wrong, but I would have doubted that many residential EICRs of occupied premises would involve the lifting of floor coverings and floorborads, would they? Apart from anything else, one would usually have to extensively lift the floor coverings to even identify places (evidenced by signs of boards having been cut/lifted) where 'hidden JBs' might be.Its worth remembering that there is no such thing as a standard EICR.An electrician once suggested to me that something was 'inaccessible' if it's location was such that it would/could not be inspected during a 'standard EICR' (wll, he probably said PIR at the time!) - and that sounds like a reasonable rule-of-thumb to me.
Each and every inspection is a individual contract between the Inspector and the person paying for the inspection ...
It's clearly different in an unoccupied propery with no floor coverings - identifying likely places for 'hidden JBs' would then often be quite easy, as would gaining access to them.
Nevertheless, I thought (and stil think) that, maybe with a bit of a tweak of the wording, it was quite a reasonable rule-of-thumb - essentially saying that something should be regarded as 'inaccesible' if it would not 'normally' (whatever that means) be seen/inspected during an EICR.
Kind Regards, John