Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 185
Fig. 35. Starting Rheostat WiringDiagram 160 UNDERWRITERS REQUIREMENTS 39 … Motor starters for d. c. motors must, therefore, be made so thata spring or other device will return the lever to the off position incase the operator attempts to leave the starter with current passingthrough its resistance coils. This is because these coils are notdesigned for this continuous…
Electrical engineering
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