Electrical History may not be everybody's passion, but when we come across a good read, we like to share it in the hope that it will be of interest to you as well.
This report was written by David A. Dini, P.E. and is entitled, Some History of Electrical Wiring Practices in the U.S. published by Underwriters Laboratories, Inc.
Abstract
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 On December 31, 1879, Thomas Edison exhibited his newly invented electric lighting in a few houses along a residential neighborhood in Menlo Park, New Jersey. That New Year's Eve night proved to be not only historical in terms of its significance to American ingenuity and invention, but it also signified the beginnings of residential electrification in the United States. Although originally available to only the wealthiest of families, by the turn of the century electricity in the home was becoming a reality for more and more people. This paper traces the history of some residential wiring practices from the early days of electricity into the 21st century. Wire and cable systems, overcurrent protection, raceways and boxes, wire splices and terminations, wiring devices, grounding, polarity and special protection devices are presented from the historical perspective of time, necessity, and technology. The influence of Code1 requirements and common trade practices are also presented.
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