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 195
arrying contact jaws must be se-cured to the base by at least two screws, or else made witha square shoulder, or provided with dowel-pins or otherwisearranged, to prevent possible turnings; and the nuts or screwheads on the under side of the base must be countersunk notless than one-eighth inch,… … Figure 122 50 degrees Fahrenheit at full load, the contacts being arrangedso that a thoroughly good bearing at every point is obtained.The whole device must be mechanically well made throughout. FITTINGS, MATERIALS, ETC. 193 In order to meet the above requirements on temperaturerise without causing…
Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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