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 121

An illustration from 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, leaf 121 — . With the treesystem, A, this is impossible; the lamps at the first cut-outcenter will either be too bright or those at the last centertoo dim. Figure C shows a convertible three-wire system. Three-wire circuits may also be run as shown in Figures A and B,using three instead of two wires. In order… … lSjT

Electrical engineering

Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.

More pictures from 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

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)

More like this