On Tue, 21 Feb 2006, Kern Sibbald wrote:
It is sort of a model of modern communications magic -- a 45 meter ether net cable plugged into an apparatus that plugs into the wall sending the TCP/IP packets over the electrical wiring (235 Volts) then somewhere else in the house there is a master apparatus that is plugged into the wall to take the signal off the electrical current, and passes it via ethernet cable to a France Telecom ADSL modem, and I am connected ...
As long as there is no earth voltage difference between the houses it will be fine.
I ran a long ethernet to a friend's house several years ago and we found potentials exceeding 50VAC to his equipment earth from the cable after it "bit" him. There turned out to be a corroded neutral connection in underground power cables from the street, which was fixed quickly, but it still serves as a warning.
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