Lightning Protection. Facts about Lightning A strike can average 100 million volts of electricity Current of up to 100,000 amperes Can generate 54,000.

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Presentation transcript:

Lightning Protection

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

Lightning Doesn’t Go Straight Down

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?

Use The Five Second Rule milesLight travels at about 186,291 miles/second feetSound 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

Stepped Leader

Streamers

Four Main Features of Lightning Protection 1) Air terminal 2) Conductors 3) Ground termination 4) Surge protection

Air Terminal and Conductors

Grounding Rod

Surge Protection Is A Must

Effects Of Lightning