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Originally Posted by Undertoad
The nine lines into Whitpain are probably 6 in, 3 out, then, because three of those lines lead north roughly following the turnpike.
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Transmission lines are three wires; one for each phase. In the switching yard, all three conduits are equally spaced in sets of three. Those six wires from Limerick are really just two 500 Kv tansmisson lines from Limerick. The other two lines from Limerick taking a more northernly path are just above. All four transmission lines from Limerick enter in the center left. Other transmission lines exit Whitpain in the upper right to continue north and east.
I believe a lower voltage transmission line leaves center right headed north adjacent to the turnpike. Destination N Wales. That would be one of the two 230 Kv transmission lines that enter N Wales from the south.