"Maxwell Lol" wrote in message
...
"ATP*" writes:

So I guess it hinges in part on what you consider Thomas Edison's day.
Also
consider that this is part of a speech and referencing Samuel Insull's
day
or Nikola Tesla's day wouldn't work too well.


I'd define "Edison's day" as anything that happensed while he was
alive. Edison died in 1931.

So - was the modern day power grid developed before 1931?


Most of it. The Germans were quite a bit ahead of us, the US electrical
system grew haphazardly prior to consolidation. Certainly AC and polyphase
power was part of Edison's day, not after his day, although he opposed it
for quite a while. One major element of modern local distribution was
developed by Edison, the three wire 110/220 volt system, although Edison's
was DC. "Networks of Power" by Thomas Hughes is a good history of the
technical and practical development of the power grid.