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 217
Fig. GO. Single, Double, and Triple Pole Knife Switches into clips at only one side of the hinge end it is called a single-throwswitch and where the blades can be thrown into clips at either sideof the hinge it is called a double-throw switch. Single-throw^ switchesmust always be installed so that…
Electrical engineering
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
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