Speaking here and there that I missed the eye means a cogeneration power plant from less than a megawatts, equivalent to about 10 food booths local processing, go to 10 districts. Little power but which claims a network of ground of a certain size. All this implies the circulating currents in the ground totally harmless, to which nobody pays any attention, except all the metal structures in contact with the ground: systems of wells, water distribution , etc.. Today plastics are used much more resistant galvanized steel and not subject to electrical phenomena, but the galvanized iron (or other metal), where it exists, has the nasty habit of erode very quickly in the presence of stray current. Maximum fun for plumbers, a little 'less for homeowners.
Obviously the area of \u200b\u200binfluence is limited, the leakage current can go deep and do not give rise to some phenomena, but they can also do the opposite and their locations are difficult to predict.
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