Jon I know I presented the question like I did not have a clue but I do have some idea. [Linked Image]

The fact is that these parallel paths on the utility side do cause problems and have been the subject of much litigation.

Try a www search using "stray current cow".

Or

"stray current pool"

Here is some info
http://www.mikeholt.com/documents/strayvoltage/pdf/ElectricalShockShower1-25-99-1-27-00Rev1.pdf

We may get to a point that the cost / benefit balance may change.

Bob

Bob Badger
Construction & Maintenance Electrician
Massachusetts