On 11/26/2013 12:07 PM, Harold W. wrote:
bud-- scrit:

This earth current is not an intentional current flow, but a result of
how electrical systems are earthed for safety

The return path is intentional in so much as the system is engineered
to take it all into account because it's going to happen. All over
the place.

I don't know what "engineered to take it all into account" means.

Engineers would rather not have these earth currents. One place they are
quite detrimental is on a dairy farm where "stray currents" can have a
really large effect on milk production.