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 141
Figure 81 best in such places when not subject to much handling. Asthese are, however, easily broken, brass shell sockets are oftenused. These are thoroughly covered with tape and compoundso as to exclude all moisture and are very durable. For Moulding Work. /. Must have an approved rubber…
Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
