Another solution the long-distance problem was his
"municipal" lighting system, which used higher voltages to
serve large areas. Its important features included high
voltage (200v) lamp, and cut-out device that would maintain
current one the lamps blew. The purpose the invention
was economically transmit electricity over long distances.v-ll
distributing electricity over wide areas.
It employed high voltage current which was transformed down by
motor generators and rotating transformers produce low
22
voltage electricity for business home use. The first
commercial use alternating current took place Europe and
Edison was able use his overseas contacts get initial
. This was one the very
first experimental projects undertaken when the lab opened for
business 1887. This form electrical energy had the
advantage being easily transformed from low high voltages
which could transmitted over long distances much more
economically than direct current. After transmission,
alternating current could transformed down the point of
use. had specifically
designed the three-wire system meet these two criteria in
1883 and went design more economical systems using more
wires. Edison developed his own alternating current system and
applied for patent for this "system electrical
distribution" December 1886. x
Edison and his staff examined all possible solutions to
the long-distance transmission problem, taking early
interest alternating current (a/c)
