Where can I found the discussion regarding the permissibility of using the hotwire/highwire (the electric wire which is all the way at the top of the utility pole) as part of the Eruv? Thanks The issue is as follows: The high wire doesn't pass directly above the utility pole, rather there is an extension that continues upward along the side of the pole and reaches pass the top of the pole, and it is that extension which is holding the high wire. as this
The high wire is on top of that extension. To be clear, the extension continues parrralel along the pole and continues above the pile, the extension is not perpendicular to the pole.The issue is whether the amud of the tzuras hapesach has to be straight, or could the abutment be considered as part of the amud. Adding a lechi along the hight of the pole to end under the abutment is not an option, being that it is so high up and the city does not allow anyone to get anywhere near the hotwire. I'm asking in a case of a shas hadchak, if bideved one can rely on the hotwire.