30 amp power cord overheating

I've seen strands of copper annealed "pink (red) until they felt like strands of a paint-brush under pressure of a finger. These problems usually occur at the wire-to-terminal socket of plug and socket and not between the actual plug and socket themselves. My made-up plug on Quicksilver is soldered to the wire. I have a made-it-myself steel and plastic plug insert to check socket prong tightness one at a time. I cannot tell you how many single slots I found loose as a goose. Yet if a regular plug is inserted, it feels "tight enough"

Simply remove one tang from a plug. Get a block of wood then roughly gouge out a fox hole just big enough to hide the base of the pin. Use JB Weld to epoxy the base of the pin to the wood. I used a large knob to grip with.

Checking socket tang tightness is a heck of a lot easier than replacing a plug.

Insert plug into socket to be checked. It should fit tight. Then try and twist the tool. It should not twist -at all-