Tech Talk 7: Lightning risks and protection

Risk advisory | August 2018
A bolt of lightning can travel at speeds of 60,000 m/s (200,000 ft/s), reach temperatures approaching 30,000°C (54,000°F), carry an electric current of 40 kiloamperes (kA), and transfer a charge of five coulombs and 500 MJ. The energy from one lightning flash could light a 100-watt light bulb for more than 3 months.
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