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 131
ith the back of lathing to hold tubes, and to support switchesor fixtures. When this cannot be done, wooden base blocks,not less than ^-inch in thickness, securely screwed to lathing, 128 MODERN ELECTRICAL CONSTRUCTION. must be provided for switches, and also for fixtures which arenot attached to…
Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
