Why does the socket panel smoke when the power is too high? Since it was all smoke, why didn't it trip?

The socket smokes because the contact resistance between the plug and the socket electrode plate is overheated, resulting in high temperature. However, its current does not exceed the limit system of the switch, and there is no short circuit and leakage, so it will not cause the switch to trip.

One reason for the smoke in the socket may be the poor quality of the plug socket.