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), 1833-1928 · New York : T. Audel & Co. · leaf 205
a source of danger, and the useof enclosed fuses is accordingly recommended whenever the rating of the fuse exceeds 25amperes. Various types of enclosed fuse are shown in figs. 468 to 470. AUXILIARY APPARATUS 417 There are numerous kinds of circuit breaker to meet the variedconditions of service of… … ^ Figs. 487 and 488.—Reverse current circuit breaker; fig. 488, view looking at end of coils ofcut out, showing direction of current. A to + bus bar; B, resistance lamp; C, brush ofcut out; D, shunt coil; E, series coil; F, core that trips cut out; G, to — bus bar; H, to+ pole of dynamo. Of these…
Electrical engineering
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