Perhaps, the hazard with any network earthing system is objectionable or potential paths thru people in contact with their bonded plumbing, fixtures, equipment casings, etc.
Some remote transients, such as lightning strikes, have exploited these potential differences thru telephone lines, killing a radius of people thru the insulated hand sets.
In the cases above the Australian IT earthing system may be superior.
Last edited by ramsy; 12/16/08 06:00 AM.
