Why the vast majority of our power stays above ground
In short: While burying power lines seems like a logical way to clear the skyline, it involves a complex trade-off between engineering physics and economic reality. This video explores the hidden variables that dictate why our infrastructure remains overhead.
Engineers must balance a multitude of factors when determining the height and placement of power lines. These include electrical clearance, the physical weight of the conductor, and environmental stressors like wind, temperature fluctuations, and lightning strikes. Infrastructure must also account for physical obstacles such as trees and vehicles, as well as the structural strength of the towers themselves.
The decision to keep lines overhead rather than underground is ultimately a calculation of safety, physics, cost, and practicality. The height of transmission towers versus shorter neighborhood poles reflects these specific engineering requirements, illustrating how the grid is designed to manage the behavior of electricity across varying landscapes.
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Sources
- Summary by Intellect · source: Why Aren’t Power Lines Buried Underground?
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