Lightning Protection
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Lightning can strike up to 10 miles from a storm, averaging 2-3 miles between strikes. It travels at 100 million volts and over 100,000 amps, generating temperatures over 54,000 degrees Fahrenheit. To estimate how far away a lightning strike is, count the seconds between seeing the flash and hearing the thunder, as sound travels about 1 mile every 5 seconds. Proper lightning protection systems use air terminals to intercept strikes, conductors to guide current to ground, grounding rods, and surge protectors to mitigate damage.
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Lightning Protection
- 2. Facts about Lightning A strike can average 100 million volts of electricity Current of up to 100,000 amperes Can generate 54,000 o F Lightning strikes somewhere on the Earth every second Kills 100 US residents per year
- 3. Lightning Doesn’t Go Straight Down
- 4. What Does This Mean? Lightning can strike ground up to ten miles from a storm ( Lightning out of the blue ) There is an average of 2-3 miles between strikes So how can we tell how far away lightning has struck?
- 5. Use The Five Second Rule Light travels at about 186,291 miles /second Sound travels at only 1,088 feet /second You will see the flash of lightning almost immediately 5280/1088= 4.9 About 5 seconds for sound to travel 1 mile
- 7. Streamers
- 8. Four Main Features of Lightning Protection 1) Air terminal 2) Conductors 3) Ground termination 4) Surge protection
- 9. Air Terminal and Conductors
- 10. Grounding Rod
- 12. Surge Protection Is A Must