Solved: Youre sizing a new electric transmission line, and you can save money with
Chapter 22, Problem 81(choose chapter or problem)
Youre sizing a new electric transmission line, and you can save money with thinner wire. The potential difference between the line and the ground, 60 m below, is 115 kV. The field at the wire surface cannot exceed 25% of the 3-MV/m breakdown field in air. Neglecting charges in the ground itself, what minimum wire diameter do you specify? (Hint: Youll have to do a numerical calculation.)
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