"Melted" overhead wire sheathing

Curious, never seen this before - what would cause the wire sheathing distortion like this at the connections? Bad connection/crimp on that side and overheating? TIA.


High resistance at the splice.

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I agree it looks like overheating from a poor connection. Could be that the connector corroded over time. Nice find. :sunglasses,

Overheating at the splice. More corrosion leads to more resistance to more to more heat and more corrosion …

Did you have a question, Mike?

Edit: I didn’t see the pic.