> [email protected] Wrote: > Not to steal the thread, but any one know why the telephone company choose to > use a negative > voltage? Where as the positive is referenced to ground? When I was a kid I > was told it was > because they discovered that the battery terminal would corrode if it was > done that way?
Negative 48 was chosen for several reasons, but the primary reason a negative potential was chosen was due to negative voltages causing less galvanic corrosion to outside plant; splices and copper wires outside corrode more quickly when at a positive potential relative to ground. -- Lamar Owen Chief Information Officer Pisgah Astronomical Research Institute 1 PARI Drive Rosman, NC 28772 828-862-5554 www.pari.edu _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
