Doug Miller wrote:
Yes, I'm afraid you are missing the point. Different locations, even though
attached to the same local grid, may have different supply voltages because
they are receiving those supplies through different transformers.

I got that. What is wrong is that the person who wrote that originally (was
it you?) used that to explain why a regular house outlet could be 220 volts
on one side of town, and 240 volts on another, both connected to the same
"grid".

There's going to be some variation, but not that much.

Geoff.
--
Geoffrey S. Mendelson, Jerusalem, Israel N3OWJ/4X1GM