I was reading a very interesting closed post (RE: My aquacrat 1800KV toasted) where the poster was villified for suggesting that a bad connection caused his motor to overheat and fail- other peoplesview was it was the motor that caused it's own overheating because it was overloaded.
This appears true but not all sources of the overload were thought about; in particular the THERMAL load directly received through the electrical wires into the motor!. (melted solder 2 inches from the motor would certainly heat the motor to it not being able to handle the extra heat produced be passing electricity through it)
I have raised this thread because I am new to FE boats, that is new to Lipos, and the control and use of Brushless motors, and I seek views about the adequacy of the wires and connections used. I have a problem where these are getting very hot (yes solder melting) but motor and batteries are only warm but ESC hot but not failing!
As a newbie but not unknowledgable about electricity, it immediately struck me that the wiring and connections if used in other worlds are grossly too small - in other words I can understand with the currents used (100Amp upwards) why they are getting very hot and will eventually of themselves destroy everything within the boat including the boat. When I investigated the ratings of the components that I see used, the manufactures ratings are actually exceeded!
There is no power authority or wiring regulationthat would approve the wiring because clearly it would be regarded as a FIRE HAZARD!!!
So why is inferior wiring used in boats - because of weight and space I suspect.
Added to the problem is that the confined small space within a RC boat has to also be sealed to stop electrics getting wet, and to stop boat filling up with water.

So I ask how have people addressed this problem with wiring clearly on the edge of thermal limits. I.E have people used other wire, other connections, have they actually cooled them, not used solder (as I see solder as a thermal problem because of high resistance and low melting point, weak physical stability)? This surely must become increasingly a problem as technology increases , e.g. now have 400Amp ESC's