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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.
Greater resistance usually indicates the metal path is not continuous, usually because of loose connections or the effects of corrosion. A grounding system that is acceptable for power circuits or lightning protection is more than adequate for a static electricity grounding system.The NEC provides rules for sizing grounding and bonding conductors. Tables 250.66 and 250.122 are provided for this purpose.n fuel bulk storage facilities, where the amount of product being transferred is great, concerns for appropriate levels of protection from static electricity are amplified. Static bonding and grounding systems and equipment are manufactured specifically for providing this type of protection.