Baille, Jean Baptiste Alexandre, b. 1841, Armstrong, John W., ed · New York, Scribner, Armstrong, and co. · leaf 116
The electric wire is made of galvanized iron, thethickness of which varies from .31 to .34 inch. Onemile of this wire weighs about 373 pounds. It isby its weight that its quality is judged. Wherecurves occur, and where the posts should be re-quired to support as small a weight as possible,wire is… … Different Forms of Insulators. easily unrolled when it is necessary to stretch italong the posts. To connect the coils of wire, in-struments somewhat of the character of a vise, asdepicted on the next page, are employed. Whenthe line traverses a town or a village it is upheld by 96 WONDERS OF…
Electricity
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