http://www.lightningprotectionspecialists.com/lightning-protection/earthing-of-outdoor-equipment-to-lightning-protection-grid Helping You Protect What Is Most Important Wed, 17 Feb 2010 01:38:59 -0700 http://wordpress.org/?v=2.8.4 hourly 1 http://www.lightningprotectionspecialists.com/lightning-protection/earthing-of-outdoor-equipment-to-lightning-protection-grid/comment-page-1#comment-96 Edesigner Thu, 26 Nov 2009 17:48:59 +0000 http://www.lightningprotectionspecialists.com/lightning-protection/earthing-of-outdoor-equipment-to-lightning-protection-grid#comment-96 Take a look in article 250 of the NEC it will give you a short review of the equipment grounding conductor, However lightning protection does two jobs. First job is to drain the pulse away from the equipment through a known path and second to provide a safer working area for those who may be in close proximity to the affected area. In the past it has been very common to build a closed loop system from copper wire .At junction points a CAD-weld is used(exothermic mold). In effect building a cage of lightning protection. This cage provides a Van De Graff effect which polarizes the building and effectively creates a sphere of safety within. Quite common in industy for metal buildings it is also used in farming areas to "SAVE" the barn..Have a good one from the E.<br><b>References : </b><br> Take a look in article 250 of the NEC it will give you a short review of the equipment grounding conductor, However lightning protection does two jobs. First job is to drain the pulse away from the equipment through a known path and second to provide a safer working area for those who may be in close proximity to the affected area. In the past it has been very common to build a closed loop system from copper wire .At junction points a CAD-weld is used(exothermic mold). In effect building a cage of lightning protection. This cage provides a Van De Graff effect which polarizes the building and effectively creates a sphere of safety within. Quite common in industy for metal buildings it is also used in farming areas to "SAVE" the barn..Have a good one from the E.
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