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 187
Figure 116 ameled with some substance w^hich will not soften so as tobecome sticky and prevent the wire from being withdrawnfrom the pipe. k. All elbows or bends must be so made that the conduitwill not be injured. The radius of the curve of the inner edgeof any elbow not to be less than three and… … Figure 117 ing a wall thickness not less than 0.128 in. (No. 8 B. & S.gage). m. Must be well galvanized, enameled or otherwise coated,inside and out, to pi event oxidation. FITTINGS, MATERIALS, ETC. 185 n. Inlet holes must be effectually closed when not inuse by metal which will afford…
Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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