Chapter 6. Lightning Protection. Overview. Characteristics of Lightning Principles of Protection Precautions for Personnel Precautions for Electronic Equipment. Characteristics of Lightning. Static Electricity Ultra-High Voltage Generation The Discharge Surface Dispersion
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Current begins the return stroke, an intense wave of positive charge traveling upward about 60,000 miles per second.
Electrons begin zigzagging downward in a forked pattern. This is the “stepped leader.”
As the leader and streamer come together, a powerful electrical current begins flowing.
As the stepped leader nears the ground, it draws a streamer of positive charge upward.Anatomy of a Lightning Stroke
Size: 18” x 6” x ½”
before, NOT DURING a lightning storm