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 179
rcuits tnay be closed progressi%-ely,remain on a few seconds, and then be opened progressively. No circuit or circuits can beclosed more than once per revolution.t carry the load. Thus the carbon gets the arc which prevents theswitches burning, while the switches carry the load to prevent… … >-rusES hvMP TrmH^ frhrr-^ ra k h 0 g) SWITCH H—T Figs. 1,012 to 1,014.—Wiring diagrams for Dulls carbonflashers. Fig. 1,012, usual method of wiring. Theload is balanced by running the neutral wire aroundthe machine, to the cut outs, breaking the outsidelegs only of a 220-110 volt system. While…
Electrical engineering
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