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There is also a neutral that connects all the way back to the 3 phase distribution but that neutral is over a mile long on that spur with 21 transformers hanging on it so there will be voltage drop that shows up in the dirt from the pole grounding conductor and the customers GES. I have 3 amps on my neutral with the main breaker off and the pole grounds very from about 0.8a and almost 3 depending on which one you look at.