One August day several years ago, we had a very close strike with little time between the flash and the thunder. It took out my computer even though it was off, plugged into a good surge suppressor strip, which was also off, and connected to a 3-wire outlet properly grounded to the electrical panel ground.
Interestingly, the old Sony TV with a CRT picture tube in an adjacent room was on, but the colors were crazy. I turned the set off and then on again, and heard the normal loud "thunk" from the degausser; the colors were then OK. It seems that the EMP from the close strike had magnetized the metal shadow mask in the picture tube.
I now uplug the power strip when not using the computer.
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At this point, contact your local AHJ with your situation, if there is one for your locale.
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Good advice from ADTech, since this is now your third thread stating your concern.
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Originally Posted by twaw
My house has been hit by lightning before, lost a lot of electronics, so I really want to ground it properly... without going too crazy on cost. Plus I intend to move the antenna in a couple months another 70' to my nearby field for better reception, and will bond it with rods every 25', which seems to be the conventional wisdom.
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If you intend to move it to the field, you need to do your research as if it were a ham (amateur radio) tower installation.
You also need to talk to a local electrician who can tell you if the local electrical inspector, who would be the AHJ (Authority Having Jurisdiction with the final say on the Code) is friendly or not.
Antenna System Bonding and Grounding Requirements
http://www.reeve.com/Documents/Artic...ents_Reeve.pdf
https://www.google.com/?gws_rd=ssl#q...ower+grounding