Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 128
INS ELECTRICITY A typical case quoted by one or two authorities gives a sag of fourinches at the center of each 130 foot span for a given size of wire, at agiven temperature. A more general rule is to make the tension on a wireas it is drawn up between each pair of poles equal to one-third of… … fiG. 957.—Wiremans come along with houk and tackle. SAG TABLE Span inFeet Temperature Fahr. 30° 60° 80° Sag in Inches 75 134 2?^ SVs 100 3 1 4M 5H . 130 5^ 7 SH i 1 1150 684 9 11^ important considerations in applying tension and allowing for sag.Thus, one construction company specifies a dip of 10…
Electrical engineering
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