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Lightning protection systems. Lightning can easily damage a number of different building materials, and the large electrical currents can cause fires within the interior or even side flashes. Side flashes are small explosions of highly pressurized, super-heated air that occur inside the nooks and crannies of structure materials.
A lightning rod and its associated grounding conductors provide protection because they divert the current from nonconducting parts of the structure. Grounding is the act of connecting a conductor, or exposed conductive parts of an installation, to the earth. The grounding protects personnel from stray currents that could leak to the metallic enclosures. A lightning rod and its associated grounding conductors provide protection because they divert the current from nonconducting parts of the structure.