Chicago : [Popular Engineering Pub. Co.] · leaf 83
e then firmly and rigidly which protects the rheostat, motor, and wir- screwed. ing from short-circuits or heavy overloads. The cover of the box is used as a switch- The girders, (G) (G'), are covered with board, and contains a double pole snap asbestos sheet to prevent their burning in switch,… … FIG. 2. CONNECTIONS OF CURRENT placed. In railway work the secondary CONTROLLER fuse may often blow because of accidental "shorts" on the track due to the car jump- (Li) and (L2), and a rheostat with eleven ing off at a switch or crossing. points, (P1-P10). Fig. 1 is not intended as The cost of…
Electricity
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