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 211
at in no placewill the cord be subjected to the cutting or wearing action ofa sharp edge. Bushings for sockets having an outlet threaded for three-eights-inch pipe should have a hole thirteen thirty-seconds ofan inch in diameter, so that they will accommodate approvedreinforced flexible cord. 56.…
Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
