Modern electrical construction; a reliable, practical guide for the beginner in electrical construction, showing the latest approved methods of installing work of all kinds according to the safety rules of the National board of fire underwriters (1905)
Horstmann, Henry C[harles], 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] joint author · Chicago, F. J. Drake & Co. · leaf 109
Figure 54 Figure 55 Figure 56 formed. Should a switch be only partly opened, this arcwill continue and consume the metal of the switch until thegap in which it burns becomes too long, when the currentwill be broken. Meanwhile there is much heat generated INSIDE WORK. 107 which may readily…
Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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