On 1/14/16 8:49 AM, Kelly Taylor wrote:
The important thing to remember is electricity doesn’t follow the shortest path somewhere, it
follows the path of least resistance. And it’s important to point out that during a lightning
event, that path is going to change, as the lightning charge will easily overload a single rod,
driving that rod’s resistance sky high. Since the event is not yet over, the remaining charge
will follow the next-best path, which could be through your radio. Better it be through the other
rods in your network, no?
Is it useful to envision ground rods as resistors, and a chain of ground rods
as resistors in parallel?
Since we all know parallel resistors divide current among them, and as a group
present a resistance that is some fraction of their individual values, is it a
good meme to remind us of the importance of multiple rods?
Consider them as inductors in series with resistors. The inductance is
about 1 uH/meter. For 1 MHz, the impedance of a 1uH inductor is 6.28 ohms.
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