Always check the inlet carefully. Something could be very wrong!. If you click on the lower picture, you can see the insulation has melted off, and the wire has acquired a lovely green patina. Nice if you are a three hundred year old bronze vase, but bad if it's your boat's marine wiring. That's the neutral wire that has been fried. Once upon a time it was white. You can click on both pictures for a better view of the damage.
If the cord burns up a second time. check the whole AC system for lose connections on breakers, meters and bus bars. DO Not use Corrosion sprays on AC Shore Power cords or Inlets. [Both Marinco and Hubble do not recommend using anti-corrosion coating product on their cord sets] The anti-corrosion coatings act like varnish on the plug and cause heat build up in the connection resulting in damage to the cord set or hull inlet or can result in a fire.
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