I think that you are somewhat complicating/confusing the discussion by introducing these 'moved goalpost' scenarios However ....... I replied directly to Adrians post about a festoon on twin cable and the very common requirement to add an additional load partway along the system. Festoons are commonly used to light a pedestrian route and additional loads added at strategic points, like a floodlight or 'EXIT' sign at an access point or obstruction.
Well, earthing the exposed-c-ps of a Class I item would achieve absolutely nothing if the item had a floating supply.In this case it happens to be a classI product, Are you saying the earth connexion on a classI product should be ignored?
Hmm. If the item is Class I because it is not considered that the insulation ("double or reinforced") was adequate to make it safe by preventing contact with (possibly both) live conductors within, then, whether you like it or not, I don't see how it could be regarded as acceptable (safe) with a floating supply - since, as above, earthing the exposed-c-p would make it no safer.I will not accept 'excluding a classI product from a floating supply'.
Kind Regards, John