There are a couple of things I don't understand: :-)
(1) When it became clear, probably close to 100 years ago, that 120V was too
low a voltage to efficiently power room (or tubes with handles) heaters and
similar equipment, why did North America not follow the rest of the world and
move to a 230V system? That is, a 3 wire 230V AC service.
(2) What bright spark decided that black was a good colour choice for the hot
wire?
Actually, there are many other things I don't understand, but those will do for
now.
73 Roger
VE3ZI
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