It has been pointed out to you on a few occasions already that when there is a ground loop when using the mains, that it is possible that a power meter at the input of the device may not correctly detect the actual power being used. If the ground loop bypasses the power meter, then the meter may possibly not properly measure the power drawn in the loop that is bypassing it, depending on the type of power meter being used.
http://web.mit.edu/~jhawk/tmp/p/EST0...ps_handout.pdf
In particular pages 3 to 6. Clarence measured the current as it entered his circuit and measured the current at the load in his circuit. Why would that be invalid? The house meter has nothing to do with it. To think that his ground center rods are getting current from a single house ground rod 20 times farther away than the multitude of rods surrounding his center rods is a bit of a stretch, don't you think?
If that were the case then my house has ground loops with my neighbors electric service on all sides.
Mack
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