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November 28th 03, 02:22 PM
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"Keith" wrote in message link.net... On Fri, 28 Nov 2003 05:58:38 -0000, (Dave Platt) wrote: Nope. The two ground points could very well have tens to hundreds of ohms of soil resistance between them. For purposes of electrical safety, bond 'em together! They are bonded together by earth ground. The antenna is not going to carry any AC load if your station is grounded. Who knows maybe a 747 will clip the guys antenna at the same time as lightening hits the 747 knocking the ground wire from the antenna and creating a huge fireball above his house. Keith, In this case you are not providing helpfull advice as it is very important that a wire bond exist between grounding systems. It is impossible to predict the direction that the fault will eventually come from there fore it is important to project from an many senarios as possible. Lightning hitting a nearby object, like a tree, will raise the ground potential around the tree by many thousands of volts and this voltage may vary greatly a few feet away. One ground rod many be at a 5,000 volt potential while the other rod is at a 3,000 volt ground potential. In this case the 2,000 volts will look for the easiest path to equalize themselves. It could be the bonding wire or, without the bond, the radio equipment. 73 - Mike - K9JRI |
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