I understand that they attract lightening so that something else doesn’t get hit. I get that part. But, how does all of the lightening energy still not hurt the roof via the rod?
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The rod channels the electricity from the lightning to a ground material. Maybe the dirt, maybe something on the roof of the building. Either way, the lightning hits the rod and is carried to, and then dumped in, a material it just can’t move through. When it hits that non conductive material, there’s nothing for it to do but dissipate because it can’t go on any further.
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