How would you test it, anyway? I can't imagine you separating the two for testing, when they are required to be connected to each other.
Reno- When you need to check the resistance of a rod, you can disconnect it from the system and test it independent from the rest of the Grounding Electrode System. I've tested individual rods and gotten 40 to 50 ohms and then added a rod by tying it to another rod and in my testing the total resistance will drop well below 25 ohms. I think you and I will have to agree to disagree on the need for 25 ohms or less on a rod at the second building. As a side note, we always say the "resistance of a ground rod" when all ground rods have the same resistance. It not really the rod itself that we are measuring but instead the path of resistance offered by sending current through the earth using the rod's surface.
