File:Pacific service magazine (1924) (14781800105).jpg

Identifier: pacificservicema1627paci (find matches)
Title: Pacific service magazine
Year: 1912 (1910s)
Authors: Pacific Gas and Electric Company
Subjects: Pacific Gas and Electric Company Electric utilities Electrical engineering Public utilities
Publisher: San Francisco : Pacific Gas and Electric Company
Contributing Library: San Francisco Public Library
Digitizing Sponsor: San Francisco Public Library

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ich is 4427 ft. The cable at Carquinez is of very highstrength steel and can be pulled to a greatertension than that used at the new crossing.The effect of this greater tension in permit-ting lower crossing towers with a higherclearance (206 ft. instead of 130 ft.) abovewater surface can be noted. However, sucha cable would not have the conductivity or ^-^ M K 1 i s 1 Pi «r .^t w 1 Transmission line from Contra Costa Substation lookingtoward Sherman Island. the resistance to weathering, corrosion, etc. It will further be noted that the topo-graphical features of the Carquinez crossingare the more favorable, for due to the eleva-tion of the hill. South Tower with wiresactually above those at Sacramento Riveris only about 60 ft. high. Similar condi-tions but not so marked occur at NorthTower, where a 225-ft. tower places thewires 382 ft. above water surface. At the present time, all towers have beencompletely erected and stringing of the cablesacross the San Joaquin River is under way.
Text Appearing After Image:
Contra Costa Substation, southern terminus of the 220,000-volt transmission line from Vaca-Dixon.

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