1)On HV lines all over the place what are the little winged things that are attached near the insulators on the wire? On some systems I have seen oval loops instead of the wings. What are these for?
2)On some three phase systems (I am assuming delta) there are a pair of much smaller wires running above the main conductors. The three phases are under a horizontal bar on maybe 7-10 bells. The bar is supported by two wood posts and there are thin wires on the top of the posts on a single insulator. Ideas on what those are for?
3)I know I've seen a thread on it before, but I can't find it now... Are there good books or catalogs where I can learn more about HV distro systems and parts???
Thanks everyone!!
