Lightning and Surge Protection

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Lightning and Surge Protection
1010607 Lightning and Surge Protection
Lightning Lightning flashes are currents of electricity flowing from one cloud to another or between the cloud and earth. They always flow by the path of least resistance, just as water takes the path of least resistance when it flows down the hillside. Such paths down the hillside are not generally straight but, on the contrary, are very crooked. The same is true of the path taken by a bolt of lightning; this fact explains the zigzag path of the flash. Trees, high buildings, towers, transmission and distribution lines, and poles are paths of less resistance than air, and therefore lightning often strikes them and flows through…
Thomas M. Shoemaker; James E. Mack: Lineman's and Cableman's Handbook, Twelfth Edition. Lightning and Surge Protection, Chapter (McGraw-Hill Professional, 2012), AccessEngineering Export