. Electric railway journal . e copper reached its present high pricethe Georgia Railway & Power Company installed a num-ber of galvanized-iron high-tension lines where smallquantities of power were transmitted. It was plannedto replace them with copper when the load reached acertain size. The first installation, 6 miles in length,was in the nature of a test and as no exceptionaltroubles from reactance and the like were noted furtherinstallations were made. To-day about 100 miles ofsuch lines are in use. The longest single line is 10miles at 11,000 volts, three-phase, 60 cycles, and thepower tr
. Electric railway journal . e copper reached its present high pricethe Georgia Railway & Power Company installed a num-ber of galvanized-iron high-tension lines where smallquantities of power were transmitted. It was plannedto replace them with copper when the load reached acertain size. The first installation, 6 miles in length,was in the nature of a test and as no exceptionaltroubles from reactance and the like were noted furtherinstallations were made. To-day about 100 miles ofsuch lines are in use. The longest single line is 10miles at 11,000 volts, three-phase, 60 cycles, and thepower transmitted in 200 kw. The high price of cop-per has led to copper lines being replaced by galvanizediron in several instances where it was profitable to usethe copper elsewhere. A potent reason for this practiceis the fact that copper wire now costs about 36 cents perpound, whereas the galvanized-iron wire is obtainable at93 cents per 100 ft. (13 lb.) or about 7 cents per pound. June 2, 1917] ELECTRIC RAILWAY JOURNAL 1018. brackets, insulators, all types of switches and socketsfor indoor wiring etc.; standard signs used about thesystem, the moldings used in the various buildings, etc. STANDARDS MOUNTED IN ENGINEERING DEPARTMENT Boards for Equipment Standards The walls of the small reception room of the DenverTramway Company engineering department have beenutilized for mounting samples of the different standardsof the company. It has been found that questions con-stantly arise as to dimensions and general details ofthe various devices, and by having at hand a samplewhich may be seen and measured and studied withoutgoing out on the work, considerable time is saved andfewer mistakes in plans made. On this sample board are mounted sections of allthe standard rails used by the company, and also thevarious sections of rails of all other railways withwhich the company has crossings. There are also anglebars used with the various rail sections, track spikes,special bolts for manganese i
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