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 72
o H W ?H oO ^W SS .°a^ o ■-<J ■§ ai ~ O ^ H ^ O § w ^<: s^ hHO) F< O Ph CO « O DIRECT-CURRENT MOTORS 49 with 90 and 160 volts, and a four-wire system with 60, 80, and 110volts, with outside voltages of 250 in both cases. The Crocker-Wlieeler Company use a four-wire system with 40, 120, and…
Electrical engineering
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