On Thu, 15 Feb 2018 22:44:49 -0000, "James Wilkinson Sword"
wrote:

That is why a 120/240v GFCI costs about 3x what a 120v one costs.

Our system is so much simpler. There really is no reason to have 110V equipment.

I suppose we could go dig up Thomas Edison and ask him why he wanted
to use 110v but we seem to be stuck with it now.
It could have been worse. Old Tom wanted 110v DC.