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    #16
    Originally posted by jaggedben View Post
    The earth is a much, much larger conductor.
    Makes sense to me, i really first time think like that. Thanks for all.
    "Sleem"

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      #17
      Originally posted by m sleem View Post
      Makes sense to me, i really first time think like that. Thanks for all.
      But if no possibility of going the fault from earth to building, what the SPDs do inside?
      "Sleem"

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        #18
        I was a little to hasty on my last post. With a single point ground, there should be no difference in potential between the earth and equipment. No difference of potential, no current flow. The way I understand this, the lightning strike will elevate the local voltage somewhat, but since the electrical is all bonded together then no damage
        The SPDs, serve to reduce transients that are induced on any power and communications/coax lines into the building
        Moderator-Washington State
        Ancora Imparo

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