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 115
Figure 59prevent water from running into them. The iron pipe isshown extending in one piece clear through the floor. Withvoltages used in this system a separate pipe should be pro-viucd for each wire, unless alternating currents are used. CONSTANT CURRENT SYSTEMS. 113 19. Series Arc Lamps. (For…
Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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