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A couple of previous questions here asked about the purpose of stacked cylindrical discs and the answers indicated they are insulators that prevent arcing.

We recently found a broken section of these and it appears the string of discs is held together by metal pieces linked through the center of the discs.

I am trying to understand how it is that the metal doesn't act as a conduit and therefore making the discs useless. Why doesn't the electricity arc to the metal pieces and continue on to the tower?

The discs on a power transfer tower.][1]

A broken off piece of the

winny
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Michal Kucera
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    Here is another question about these: https://electronics.stackexchange.com/questions/161213/how-do-ceramic-disk-insulators-support-the-weight-of-transmission-lines The answers claim the core is not metal. – Eugene Sh. Jul 27 '22 at 16:43
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    Some "components" can look like "metal" but are not metal. "Ceramics" are really "wonderful"? – Antonio51 Jul 27 '22 at 17:01
  • Question answered, thanks all! – Michal Kucera Jul 27 '22 at 18:57

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