Intersting!
Here’s a piece from a publication which I’m guessing is not widely read among the health nut types who are given to believing junk science:
http://tdworld.com/customer_service/power_causes_concerns_remediation/
Now, I’ll give you another example of unbalanced three phase systems. There’s a persistent thought among meth-heads that they can chop out the neutral conductor on a wye-connected three phase system, because the neutral shouldn’t be carrying any current. In the dry textbook world of three phase, all phases should be balanced and therefore, cancel out the neutral leg currents and voltages, right?
Wrong.
Some clowns have been killed while cutting the neutral leg on a wye system.
BTW2: pipeline operators get concerned about things like new transmission lines going up in their area due to ground currents:
http://www.asminternational.org/content/ASM/StoreFiles/ACFAB96.pdf
Page down to “Stray Current Corrosion.”
This is why we pay engineers to design these systems, and not health food restaurant reviewers.