[NJARC] DC Power in NYC?

[AMCMATADOR at aol.com]

I Know that certain parts of NYC used DC power well into the 1950s,  possibly 
later. I have a friend who worked in Manhatten at a college  uptown. The 
buildings there were originally DC. Later on AC lines were added,  but 
incandescent lighting, elevators and other loads that did not require  the use of 
transformers, were left on the DC circuits much longer. As the  story goes, this 
proved quite confusing , and resulted in some people plugging  transformer powered 
or AC motor devices into the DC lines. It was established  that all AC 
equipment was to have Hubbell twist lock plugs and all AC  receptacles were to be 
the same. All DC equipment or AC/DC equipment, was  equipped with standard 
parallel blade plugs. Several years ago, my friend was  fortunate enough to 
intercept some trash, and save some equipment, which I wound  up with. With the 
exception of a small AC/DC radio, and a projector with a  universal motor. All of 
the equipment had twist lock plugs still attached. Just  a little tidbit of 
useless info! I have always been curious when DC was actually  eliminated from 
all building receptacles, and lighting. To my knowledge It is or  was still 
supplied for elevators at least until very recently. 
 
                            Darren 



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