One of the things to know about this addon is that it simply replaces the default small power line poles and large power line towers with new models, but does nothing else. Since there is no way to actually line-up and connect 3D power lines from one power line tower or pole to the next, the 3D models of the power lines only go so far in either direction and then taper away completely, so it only gives the impression that the power lines are running from one pole/tower to the next, but if you are to fly right over the middle point between the power line towers, you're likely not to see any power lines at all (and if the towers are too close to one another, the power lines from each with crisscross with one another). Still, from most angles/placements, it actually looks really good on the large power line towers, but for the small power line poles, usually positioned close to one another and not always aligned properly, I've found it's best to choose the power line pole models without wires - fortunately, you can choose just such an option. Here are some examples...
As can be seen for the large power line towers, they look great with wires, as they're typically spread apart far enough and aligned well enough that they give off the impression of having properly connected lines.
However, when it comes to the small power line poles, I've found it best to choose the option without power lines (just the detailed poles), as for the most part they just end-up looking like this (and even worse, when they're not all pointing in the same direction):
