The problem in grain elevators is the static charge caused by the
movement of grain from ground to the top of the elevator. Works just like a
belt on VanDerGraff generator. And this relative small voltage can be
discharged. That is a lot different from a thunder storm. So grounding
stuff at the top of the elevator while adding lightning rods could improve
the situation. Like a battery, in the case of a grain elevator you have
both ends available that you can short and discharge it. In the case of
lighting on end is far away in the clouds.
At 11:20 AM 1/10/2007 -0500, you wrote:
>I have a WISP customer that has gear on top of a mid west located grain
>elevator. They told me that they lost a LOT of gear up there due to
>After they had a company come in and put up a series of lightning rods and
>grounded the heck out of them the damage stopped happening. Something about
>it bleeding off the energy before a strike actually happens.
>I've not tried that anywhere here but they swore it worked. Makes sense to
>me in a way. Has anyone talked to the folks at Polyphaser? They have some
>really great white papers etc. on the subject.
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