What Happens When Lightning Strikes a Tower (Part 2)
Ask the Grounding Experts · Hosted by David R. Stockin, P.E.
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About This Episode
In this episode, E&S Grounding Solutions President David Stockin continues looking at an example of lightning striking a large metal tower. The connection between electrodes and earth will determine the potential difference across the ground, so it is important to understand what causes the potential difference and why engineers should work to minimize that difference. The formation of electromagnetic fields and step and touch voltages are other factors to consider in the design and analysis of a grounding system. Mitigations are possible by adding copper wire, copper ground ring(s), and electrodes that are specially-designed to help dissipate leakage current. Many of the principles applying to a large metal tower could apply to other structures.
About the Host
David R. Stockin, P.E. is President and co-founder of E&S Grounding Solutions, Inc., a Service-Disabled Veteran-Owned Small Business (SDVOSB) specializing in electrical grounding and lightning protection engineering. David has performed grounding and lightning protection studies in over 160 countries across 6 continents and is an IEEE-accredited continuing education provider.
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