Join Date: Mar 2009
Location: Decatur, IL 62521-1529
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From everything I have read, here is my understanding. Most lightning is a negative strike with positive tendrils extending from points above the surface first. The purpose of bonding all your grounds with a bare wire, as close to the earth as possible without being damaged with a weed trimmer, will be apparent. If your home is to be hit with a direct negative lightening strike it will appear as one unified ground on the outer skin of your residence. The positive tendrils start to rise, touch your ground around the building, extend up the antenna to complete a circuit with the negative cloud charge. BANG! Your ground wire disapears under millions of volts. Every piece of electronics in your home is fried. Hopefully you aren't near plumbing or a wired phone. But that blown away ground has created an ionized path OUTSIDE for the current to follow, and your house may not catch fire. Near strikes are less severe and positive strikes are much worse.
Next post or edit, why to bond attic antenna to ground and ground loops related to bad neutral bonds.
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