International Library of Technology · Scranton, International Textbook Co. · leaf 462
G^ Fig. 37. knife switch that will not be damaged to any extent by it.As long as the knife switch is open, the current is off andthe regulating switch K can be moved to any of the fournotches without danger of burning; but when K is closed,K cannot be moved at all; also, unless the regulatingswitch… … Fig. 38. the off-, or 0-0, position, so that no current can flow through 30 ELECTRIC RAILWAYS. 25 the circuit; when K is open and K is turned to the firstnotch, indicated by the dotted line i-i, contact jaws i, ^, and 3 swing with K and jaw 1falls into line with K, so thatwhen K is closed, the path…
Electrical engineering
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