International Library of Technology · Scranton, International Textbook Co. · leaf 532
ed wires of an electric railroad. Nine fire-alarmboxes, a tapper, and an indicator were burned out, therepeater also being partially destroyed. Fire was alsostarted in the residence of the chief of the fire department,but was promptly extinguished. It was found on inspectionthat the instruments… … Pig. 1. Fig. 1 shows a gas pipe that was melted by an arc causedby a heavy current-carrying circuit crossing a signal cir-cuit that was connected to the pipe. The connection to thepipe was poor and unsoldered.
Electrical engineering
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