Today 10th Mar 2006, I had to locate a cable fault on a 4 core Al 185mm² at 4222 Great North Road Glendene, which also affected my favorite Italian Pizza shop. A generator was put in place to get power going prior to me locating the actual fault due to the 33 kV fault on the North Shore which had more priority.
Digger opened up hole, Jackpot!! Water pipe straight through double orange ducts from roadcrossing to transformer.
Photo evidence speaks for itself.
The product of rotation, excitation and flux produces electricty.
The council is upgrading the older water mains at the moment. By drilling for a the new water mains at 4222 Great North road Glendene, the drilling contractor had the power marked out by the POCO. but, he didn't mark the road crossings, and Jackpot!! Fizzle and crackle, Some people had lost power or had only 1 Phase.
Power was not lost immediately when the cable was hit but it lasted for nearly 2 weeks and a bit of rain, triggered all the events.
The 200 kVA supply transformer was across the road.
Cable damaged was 4 core Aluminium 185mm².
Better view, when digger opened up the hole. Note the thin black cable was a Telecom cable That cable got nicked by our digger operator so we called Telecom to fix it. no marker strip was put in place.
Closer up of ducts. Not sure what is in the white pipe. That may be the older watermains. Both black cables are Telecoms.
#63174 - 03/11/0608:36 PMRe: Joining Water and Electricity