PM- i tried to answer your ‘thread’ about electricity in an earlier entry but it didn’t go through.
it is pretty clear that Poskim in the early days of eelctricity did not know how to handle this new phenomenom. (BTW- why do you assume that the Aruch Hashulchan did not have electricity? If my memory proves me right, he lived into the twentieth century)
This is why we had different attempts at explaining why it should be ossur or not.
I would submit that the actual flow of current has no rerason to be ossur-just like oxygen, wihout which no fire is possible- is not “ossur”. Only the RESULTS of this current- or, as the Chazzon Ish maintains, the formation of the current- can be ascertained.This is where the whole hullabalo started. The early mattirim did not believe that it fell under any prohibition for yom tov ,same as fire. (shabbos is different) This is what, I presume, Rabbi Klass wrote in his writings,relying upon some Poskim.
Today, we don’t use the current but it is far from clear why this is so. For every ‘melocho’ under which it may fall, there is a mitoch and I still don’t understand why it should be “ossur’ on yomtov. I’d love to be enlightened.