I was reminded today of this incredibly well written account of repairing a high voltage underground cable in LA. It's well worth your time to marvel at one tiny piece of what makes the modern world tick.https://www.jwz.org/blog/2002/11/engineering-pornography/ …
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Replying to @colmmacc
Something not mentioned is this which is a factor. Although as far as I am aware we knew about it in underground cable chambers in the 80s. Traffic vibration causing stretching in cables, particularly on long straight fast roads more than in housing estates.
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Replying to @PaulsPrattle
This is west LA. There are no fast roads! ;-)
3:13 PM - 1 Apr 2020
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