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A comment on What to Do After Finding Hot Connectors on Overhead Power Lines (2017) [video]. Parent comment

Re:What to Do After Finding Hot Connectors on Overhead Power... by markbnj on Tuesday August 21, 2018 @02:09PM (#17812184)
Possibly not? The high resistance splices are producing heat and at some point I believe they fail, which could affect the whole grid.
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Re:What to Do After Finding Hot Connectors on Overhead Power... by londons_explore on Thursday August 23, 2018 @03:15AM (#17825219)
When they get to 220C they are going to fail pretty quick.

At those kinds of temperatures, oxidation is much faster, and you'll get heating and cooling stresses causing micro fractures as the load on the line goes up and down.

As the resistance increases even a little, the temperature will increase more, making the above effects even worse.

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