What is a likely reason for a metallic shore power inlet to become hot to the touch?

A metallic shore power inlet becoming hot to the touch is often indicative of an issue related to the current flowing through the system and its ability to manage that current safely. The suggestion that incorrect shore-cord insulation temperature rating is responsible highlights the importance of matching cable insulation ratings to the expected load.

If the insulation is not rated to handle the temperatures that correspond with the electrical load being drawn, it can lead to excessive heat buildup. This is particularly crucial in marine environments where factors like humidity and containment of heat can exacerbate the problem. If the insulation is not adequate, the heat can transfer to the metallic inlet, making it hot to the touch.

In contrast, faulty wiring could refer to poor connections or damaged conductors, which could contribute to overheating but wouldn't directly indicate insulation inadequacies. Overloading the circuit can lead to high current flow and resultant heat, but it doesn't specifically relate to the characteristics of the shore-cord insulation itself. Lastly, improper grounding might affect safety and electrical performance, but it is less directly linked to insulation temperature ratings compared to the significant role that insulation plays in heat management of the wiring system.