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On Sun, 15 Feb 2004 16:05:10 -0500, w_tom wrote:
If Ufer grounds were so destructive, then why does "your" tower talk even recommend them? You could not even cite appropriate posts in 'tower talk'. Funny. I provided citations from 'tower talk' that says you posted technical inaccurate information. First you deny that earthing is essential for protection. Then you openly admit lightning caused "lost 2 TV sets, 1 computer, my router and wireless access point". Classic damage when all incoming lines are not properly earthed. You have a serious earthing problem in your own home. Instead you cite your own improperly earthed home as proof that earthing is not essential to lightning protection; that no protection is possible. That TV and computer damage is classic when incoming wires - antenna and utility - are not properly earthed. I asked you how I could have prevented my Cat5 from picking up induced voltage, but you somehow avoided that question again. My antenna and utillities are properly earthed. How do you earth a Cat5 cable? Do you know what one is? Yes there is more to protection that just earthing. Exactly what we have been telling you. But some how you want to ignore what others have posted. Some incoming utilities require more than just earthing. However without earthing, then no protection exists. Earthing is required at the OPs antenna mast AND on wire as it enters building - the ground block. Earthing is THE first item - the most essential - installed for lightning protection. 'System' installed using concepts in "The Need for Coordinated Protection": http://www.erico.com/public/library/...es/tncr002.pdf No earth ground means no effective lightning (or static) protection. Earthing also required by the National Electrical Code - for human safety reasons. The answer to zeeeeeeee3's original questions: earthing is required at both that antenna mast AND at the common service entrance so that all incoming wires first connect to the single point earth ground. Driving the mast into earth is not a sufficient earth ground. Are you repeating this for your benefit? If you want to argue with yourself, feel free. Lancer demonstrates what happens when a poorly earthed home suffers a lightning strike - unnecessary damage to computer and TV. He even denies the effectiveness or need for earthing. That's fine. What is not fine is when Lancer outrightly lies to others about benefits of single point earth ground. You put words in Franks mouth, now you are attempting do that with me. I never denied the effectiveness of earthing, I stated and will state it again, sometimes that isn't enough. For the OP's original question: system demonstrated here applies: http://www.erico.com/public/library/...es/tncr002.pdf Additional products that can utilize advantage of the essential earthing system are offered at Erico, from Polyphaser, and even in Home Depot. 'Whole house' protector is also required on other incoming wires. But the bottom line remains - lightning (and static) protection is only as effective as its earth ground. Thought you said Static is irrelevant. A few hundred volts of static will not damage any properly built radio. You could even static shock your car radio antenna or a portable radio antenna without damage. That would be as much as 18,000 volts - and still no damage. Earthing is not a total solution. However it is the answer to OP's original question. No earthing means no protection exists and a violation of NEC. Earthing is that essential. No one has said any different. Glad that you admit earthing is not the total solution, something I have maintained all along. In the meantime, even 'tower talk' demonstrates why single point earth ground (service entrance earth ground) and why Ufer grounds are so effective. A preferred earthing solution where people first learn facts before posting denials - and more information for the OP's original question. Great, why don't you do that, and get over the idea that earthing is not the total and complete solution. |
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