Scott-PA:
Thanks for the reply. Yes....the external outlet on my trailer is protected by the GFI circuit. Checking each circuit with a meter was used to determine this for certain.
It appears that the cable was pressed up tightly against the edge of the opening when installed. As a result, vibration and pressure against the cable from the opening`s sharp edge, wore through the cable`s sheathing....exposing and damaging the black wire.
I will likely need to replace with a new section...then reinstall a new outlet. I will also need to come up with some way to pad the wiring so abrasion doesn`t become an issue again....but the longer section of wire might help. Plus some rubber or hard foam padding.
I believe this might cure the problem. But won`t be sure until the initial fix is complete.
Wasn`t expecting problems so soon, as this is a new trailer (2020). But will have to deal with it, anyway.
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