A circuit breaker tripping results from short circuits, overloaded circuits, and ground faults. In each case, an unintended excessive flow of current triggers the trip. This event, often called a βlight trip,β is a sudden interruption of power to a specific section of your home's electrical wiring. The interruption is. The trip disables the circuit until the problem is fixed. Several power outlets in a single room, possibly a USB power outlet, may suddenly stop functioning. But what does that mean β isn't power just power? Not exactly. When you flip that switch, your lights may pull too much power.