Kruesi pipe
The Kruesi tube ( English Kruesi Electric Tube ) is a historical design of an underground cable for the first electricity networks . The inventor was John Kruesi , who at this time (around 1880) was employed by Thomas Alva Edison .
history
The idea consisted of a pipe in which three conductors were poured separately by insulators and could be connected by sleeves . The requirement to use three electrical conductors was due to Edison's DC system .
Edison founded the "Edison Electric Tube Company" in 1881, of which John Kruesi became the director. The Kruesi Electric Tube was registered for a patent in 1883.
application
The Kruesi pipe was installed for the first time during the construction of Pearl Street Station , the first power plant in New York . On September 4, 1882, Thomas Alva Edison opened the power plant.
The Kruesi tube, which was used to transmit direct current , was first laid in an area of around 600 by 600 meters and supplied around 800 filament lamps in Pearl Street . After a year or more, the network was expanded to include a further 508 subscribers and supplied more than 10,000 light bulbs. In January 1883 the first company "Ansonia Brass & Copper Co." was connected to the management of Kruesi. A total of around 30 kilometers of Kruesi cables were laid in southern Manhattan .
In 1895, Pearl Street Power Station was shut down and sold. Years later the power station building was demolished and today only a plaque reminds of the first power station in the USA.
swell
- John Winthrop Hammond, Men and Volts, the Story of General Electric, published 1934 by JBLippincott Company
- A Swiss home child becomes the right hand of the inventor Thomas Alva Edison (PDF; 363 kB)