I agree, Bob. Seemed REALLY strange to me that they would spend big dollars on materials and labor to install those towers/poles/posts, yet try to save pennies by using a single wire instead of two...
Jerry W4UK At 02:34 PM 2/4/2007, you wrote: >--- In [email protected], Ignacio Cembreros <[EMAIL PROTECTED]> wrote: > > > > Jerry Flanders wrote: > >clerk phoned her husband, who worked for power co. He confirmed > > > only one wire was used - conductivity was so good in that area they > > > used ground for the return path. >______________________________________________ > > I also saw the same in Cuba and in some regions of Central and South > > America. In fact now it is seldom used, just for small branches of >13,8 > > Kv circuits serving just a small power transformer. I understand >many > > are being replaced by conventional (live and neutral) 2 wire circuits. > > > > 73 de Ignacio, EB4APL > >Presents serious potential issues (pardon the pun). No way to monitor >for unintended ground faults, and the possibility of multiple >unintentional grounds being present causing really strange circuit >behavior. > >Not to mention that if for some reason the ground impedance were to >vary from time to time... > >Bob
