[Elecraft] Grounding negative side of power supply?

[Al Lorona]

Variations on this thread surface every few months but for a thickhead like me the essential idea seems to finally be sinking in.

If I can ask you guys to simplify and reiterate, what you are saying is that for an arrangement where the shack is in a separate building that is 75 feet from the electrical service entrance/ground rod and is served by its own 240 VAC circuit, the green wire as it enters the shack should be connected to the RF ground rod just outside the shack? That this is not only allowable but desirable, correct?

I still have trouble understanding how two ground points connected by 75 or 100 feet of #10 wire can maintain the same potential if any current flows in that wire, but I guess it's better than not having them connected, is that the right idea?

Al  W6LX