I am beginning to think that Ring circuits are hazardous to our health.
Radials are worse. There was a major outage in the northern part of Stockholm, Sweden, one or two years ago, when a HV cable caught fire. The PoCo had to run a new cable above ground to get power back, which took days. A ring would have allowed you to supply at least some power to the area. Silly thing was that the same cable had failed a year before, with the same result. Slow learners...
[This message has been edited by C-H (edited 08-29-2003).]
Paul and others, Whether you like it or not, LV systems are run Underground as a Ring Circuit, before they feed a house, or even as an Over-head circuit. Normally makes fusing a hell of a lot easier! And yes, most of our U/G cables are Aluminium. Even in a PME Installation, there are still Ring circuits!.