all was trying to say on the middle pole is to put the attachment point off on the side of the pole, (insulator or lag eye bolt I would prefer the insulator), and hook the wedge clamp on to one side, then place the next wedge clamp on to the wire to support from the other direction with very minimal loop to nearly non existence loop, I don't think there would be any rubbing or any need to use any additional support. ( have seen this used on a lot of street light poles).
I was trying to see if the use of a "cable suspension clamp" would work in this instance, but I can not find any place to approve it or dis approve it use, similar to these, the picture is of a double system, Clamping it to the bare neutral wire,
http://www.gmptools.com/nf/images/74109_pixbig.jpg
or here is jsut the clamp
http://www.seniorindustries.com/imag...50+SI-1755.jpg
the concern I have is the potential galvanic action, of dissimilar metals, I did not want to suggest the method until I could find if it was an approved method, and as of yet I have not found that out.
I have done a lot of looking to see how others have done it, and the closest I have seen it light poles in the local town as there are very few double spans, and in the towns around here, they use the wedge clamps very similar to the way I described above, with almost no loop.