International Library of Technology · Scranton, International Textbook Co. · leaf 56
. The Edison three-wire system allows current to be sup-plied at 110 volts, although the transmission itself is reallycarried out at 220 volts, and, therefore., results in a large 42 ELECTRIC TRANSMISSION. 14 saving in copper over the old 110-volt system. The three-wire system is shown in Fig. 13.… … because the two machines are connected in series, and theirpressures will be added. A third wire, called the neutralzaire, is connected to the point f between the machines, sothat between the lines de and fg we have a pressure of110 volts, and between fg and // k a pressure of 110 voltsalso. 53. In…
Electrical engineering
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