Common causes of circuit breaker tripping include overloaded circuits, short circuits, ground faults, and faulty appliances. Overloaded circuits occur when too many devices are drawing power from a single circuit. Short circuits happen when a hot wire comes into contact with a neutral wire, creating a high current flow. Ground faults occur when a hot wire touches a grounded surface. Faulty appliances can also cause breakers to trip. If your breaker trips frequently, it's important to address the underlying issue to prevent potential hazards.