I am not sure what the wire gauges are and could not find any markings but I will explain by approximating the thicknesses of the wire found. The diameter of the overhead service wire coming in is approx. 1/4-5/16". It connects to wiring that is much larger in diameter at the mast, perhaps 3/8-7/16" dia. The panel is protected by a 200A main breaker. Seems to me that the 200A breaker would not trip in an overloaded condition and the main wire coming into the house may fail.
I read another thread here but I wanted to be sure this is not a problem.