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Re: [TowerTalk] FW: High-Tension Wires

To: towertalk@contesting.com
Subject: Re: [TowerTalk] FW: High-Tension Wires
From: David Gilbert <ab7echo@gmail.com>
Date: Thu, 20 Oct 2022 16:47:49 -0700
List-post: <mailto:towertalk@contesting.com>

Rules of thumb like that are almost useless.  It would GREATLY depend upon the type of semiconductor.  MOS memory would be pretty vulnerable, while bipolar power rectifiers would be very much less so.

In some cases, it takes energy (mostly current) to be destructive. In other cases, voltage spikes with almost negligible current can be killers.

73,
Dave   AB7E


On 10/20/2022 4:23 PM, Grant Saviers wrote:
One reference I found stated the "kill radius" for electronics (semiconductors) is 300ft from a primary strike.  The same radius for a person is 50ft.  Presumably the ground voltage gradient, the capacitive charging/discharge, surface arc paths, and/or the induced currents are sufficient in both cases to cause damage or serious injury/fatality. Livestock are more vulnerable given their wider footprint.

Grant KZ1W


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