How are most electrical fires caused?

The most common cause of electrical fires is often linked to overloading circuits. This occurs when too many appliances or devices are connected to a single circuit, exceeding its capacity and generating excessive heat. The heat builds up, potentially leading to insulation failure and an ignition source.

While arcs can certainly lead to fire, they are typically a result of faulty connections or damaged wires, rather than the primary cause of electrical fires. Faulty wiring, including damaged insulation or improper installation, is also a significant factor in electrical fires. However, these issues often contribute to conditions like circuit overloads and arcs rather than being standalone causes. Moisture exposure can lead to electrical shorts and subsequent fires, but it is less common compared to overload situations, where the electrical system is pushed beyond its safe limits.

In summary, while arcs, faulty wiring, and moisture exposure can all contribute to electrical fires, overloading circuits remains the predominant cause, underscoring the importance of proper electrical load management.