Discussion on “the grounded neutral,” at New York, October 11, 1907

Author(s): Peter Junkersfeld
Publisher: IEEE - Institute of Electrical and Electronics Engineers, Inc.
Publication Date: 1 December 1907
Volume: 26
Page(s): 1,705 - 1,735
ISSN (Paper): 0097-2444
DOI: 10.1109/PAIEE.1907.6741919



In November, 1900, the Commonwealth Electric Company of Chicago in one portion of its territory put into commercial service the first extensive system of four-wire, three-phase distribution at 4000-2300 volts. This 60-cycle system was soon installed in all the company's outlying and suburban territory, and has since grown to such an extent that the total length of three-phase or equivalent line of feeders to-day aggregates 525 miles, of which 55 miles is underground, the remainder overhead. The neutral of this 60-cycle system has always been connected solidly to ground.