Identifier: pacificgaselectr61915paci (find matches)
Title: Pacific Gas and Electric magazine
Year: 1909 (1900s)
Authors: Pacific Gas and Electric Company
Subjects: Pacific Gas and Electric Company Electric utilities Public utilities
Publisher: (San Francisco, Calif.) : Pacific Gas and Electric Co.
Contributing Library: San Francisco Public Library
Digitizing Sponsor: San Francisco Public Library

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Style of filil ciilile niulior, 348 Pacific Service Magazine I times with heavy salt fogs and acidfumes. And now the continuous demand formore power around the hay region dur-ing the present year has necessitated tlieaddition of two more cables,which, with the original four,now provide two independentthree-phase lines across thestrait where but one existedpreviously. Thus we are nowenabled to deliver double theamount of power from the cables which manufacturers have now tooffer, it became evident tlial liie old oneswere as good, if not better, tlian any ofthe others, and, besides, tlieir past recordleft no margin for improvement. Tliey
Text Appearing After Image:
The South Tower at Crockett. power-houses in the north to the largeload centers in the soutli. It may be of interest to note that thetwo new cables are identical in con-struction to the four original ones. Aftera thorough investigation of all kinds of The old South Tow er at Crockett. consist of 19 strands of galvanizedplow steel wire twisted into cables,each having a diameter of seven-eighths of an incli and a brealvingstrength of about 48 tons, which isequivalent to 215,000 pounds persquare inch; whereas, the normalstrain in each cable as suspendedacross the strait is about 11 tons.Each cable was furnished in asingle piece 6,300 feet long. Theclearance above high water is ap-proximately 216 feet. Considerablechange in the construction on thetops of the towers was necessaryin order to properly accommodatetiie two additional cables. The fourwooden crossarms were replaced by threepairs of steel I-beams which overhangboth sides of the towers. The cablesrest on saddles at the extremities

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