I am trying to describe the best I can the scenario I came up with in order to try to understand a short circuit.
Let’s say there is only one main circuit breaker and there are two outlets in the room.
Let’s say that outlet 1 gets short circuited by a cable that is cut on an Air conditioning unit.
Outlet two has a gfci type circuit breaker or a detachable circuit breaker with extra outlets ( An outlet extender with a circuit breaker)
Now to my understanding when a short circuit happens there is high amperage flowing through the circuit until the main circuit breaker pops and shuts off the power.
Now in those milliseconds of time between the short circuit happening and the circuit breaker popping, theoretically there is ALOT of amperage going around on the main circuit until the main circuit breaker pops.
This includes the excess amperage traveling through outlet 2. Theoretically shouldn’t the outlet with the circuit breaker pop as well as the main breaker since it is experiencing the flowing of extra amperage as well and by turning off and cutting electricity from outlet 2 help the devices that could be connected to it not get their power supplies / components damaged since it is closer.
Even if it does not pop should it not help since it is isolating a sub circuit from the main circuit that is experiencing the extra amperage.