Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 47
o the flow of electric current and for that reason theyare used to keep the current in its proper path. In a transmissionline, current is prevented from passing between the wires byporcelain insulators attached to cross arms as shown in Fig. 22.When the wires are placed close to one another, as in… … Porcelaiii, \.Insulator P^~~~ ^^ / , , \
Electrical engineering
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