On a grounded system with XO grounded at the utility transformer and at the service, there will ALWAYS be current on the grounding electrode system. Current does not as many like to say "follow the path of least resistance", it follows all paths that are available. The current is divided among the parallel paths in relation to the resistance of the paths with the most current flowing on the path will the least resistance. In your system, you have the earth in parallel with the grounded conductor between the transformer and the service. The better your grounding electrode system, the more current will flow through it.
Don(resqcapt19)
[This message has been edited by resqcapt19 (edited 01-23-2001).]
