Poor connections can cause this type of dangerous situation in one’s shore power cord. This was on the dock end, but still!The female end of the ‘Y’ adapter was also pooched. The fix. Strip the insulation, tin the ends, and join the two ends together, as shown. Mastic tape and heat shrink tubing with adhesive inside makes the finished product, saving hundreds of dollars in replacement cords. All this came in the kit.
You sure you weren’t trying to run that new flux capacitor off shore power? Nice fix!