Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 78
Fig. 2,215.—Pacific swivel type blade for Baum pole top switches. The twist type of blade,here shown, is especially adapted to switches operating in freezing or sleety weather.It will be seen that the first few degrees through which the rotating insulator is movedhave the effect of twisting the… … Fig. 2,216.—Pacific 22,000 volt, 100 ampere, pole top switch equipped with fuse tubes; de-signed to meet the need for a small group controlled disconnecting switch, having sev-eral features making it suitable for use with service transformer installations and linebranches. The switch is made with…
Electrical engineering
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