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I've been watching new power poles go up around our campus and it
occurred to me that the insulators that hold the wires always have the
same basic shape: what appears to be ceramic "disks" stacked together.
I've tried to think through why this shape is important, but so far I've
come up empty. Does it perhaps have to do with moisture shedding? An
increased surface area would get rid of heat more efficiently, but these
insulators shouldn't get that hot anyway, right?
I'm likely missing something really simple, but I'd appreciate it if
anyone out there knows the answer, please give me a clue.
Thanks.
--
Van E. Neie