What is the most common cause of a circuit breaker trip?

Answer: Overloaded circuit
Explanation: In most cases, a circuit breaker tripping occurs because of an overloaded circuit. What this means is that a circuit is trying to draw more power than it is designed to carry.

Answer: Overloaded circuit
Explanation: A circuit breaker is designed to "trip" when it exceeds the amount of current it is designed to handle, ie... 15 amps, 20 amps, etc. If a circuit becomes overloaded for a period of time that is built into the design of the breaker, it will trip. An example is you have your computer on, a plug in wall heater turned on, and decide you want to vacuum. If all of these are on the same circuit, it could cause an overload and then the breaker will trip.

Answer: Overloaded circuit
Explanation: And the least likely to initiate a service call. This is very dangerous, don't overload a circuit.

Answer: Overloaded circuit
Explanation: Common cause's of breakers tripping is trying to draw to many amps or it can be a short circuit of an appliance. The design of a breaker is to trip to stop what ever is causing the problem saving the wiring and possible fire.

Answer: Overloaded circuit
Explanation: continously adding on to a circuit can add amperage to circuit causing a trip

Answer: Short circuit
Explanation: Short circuit also known as a dead short is the most common cause of a tripping breaker. Although overheating, and overloaded circuits will cause a breaker to trip. You should always have the entire circuit checked for any causes that may be making your breaker trip.

Answer: Short circuit
Explanation: In my 37 years of troubleshooting I would say short circuit is the most common cause

Answer: Overloaded circuit
Explanation: All of the above, but mainly overloaded circuit.