. Electric railway journal . r), extending northerly and westerly to near theouter end of the line; another tapped on by 638,000 aluminum cables (equivalent to 400,000 circ. mil CO]per) to trolley wire opposite substation, and another p/irof 1,192,500 circ. mil aluminum cables extending taps are located from 1000 ft. to 2270 ft. ilpart,with section breaks between them. With this arrange-ment of feeders, with ten cars in operatio/f on thedivision and 600 volts emf at Aloha Stree^it is esti-mated that the maximum drop would be experienced atthe outer end of the line, being
. Electric railway journal . r), extending northerly and westerly to near theouter end of the line; another tapped on by 638,000 aluminum cables (equivalent to 400,000 circ. mil CO]per) to trolley wire opposite substation, and another p/irof 1,192,500 circ. mil aluminum cables extending taps are located from 1000 ft. to 2270 ft. ilpart,with section breaks between them. With this arrange-ment of feeders, with ten cars in operatio/f on thedivision and 600 volts emf at Aloha Stree^it is esti-mated that the maximum drop would be experienced atthe outer end of the line, being about 61JB volts or cent at the furthest feeder tap. N^r the southerlyend the drop is less. On the initial yfetallation, a sav-ing in first cost of more than made by usingaluminum instead of copper, the price per pound ofaluminum cable being cents delivered at Seattle,while copper cable was cents per pound, the totalweight of aluminum required being of course very muchless for equal conducffqnci. $3,000Saved by installing ALUMINUMCONDUCTORS That saving, too, takes into account only thesaving in first cost of aluminum over the costof copper. The saving by reduction of numberof poles, with pins, insulators, etc., possiblethrough the use of longer spans practicable be-cause of the light weight of aluminum, largelyswells the above figure. Reduced maintenancecharges is a vastly important item ; dont forgetthat Aluminum is advancing as the ideal metalfor feeders and transmission lines. It is advanc-ing because it pays. Make it pay you. Writefor data. Aluminum Companyof America Pittsburgh, Pa. New York Boston Chicago San Francisco 99 John Street 131 State Street Old Colony Bldg. 118 New Montgomery Street ,147-P SEATTLE MUNICIPAL RAILWAY—EXTERIOR VIEW OFSUBSTATION March 20, 1915] ELECTRIC RAILWAY JOURNAL 17
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