What can excessive overcurrent result in?

Excessive overcurrent can lead to electrical fires because it causes an overload of electrical circuits. When current exceeds the rated capacity of a circuit or device, it generates excessive heat due to the resistance in the conductors. This heat buildup can damage insulation around wires, make connections faulty, and ultimately ignite surrounding materials, leading to a fire.

Understanding this concept is crucial for fire investigation technicians as identifying the sources of electrical fires is a key part of their role. Recognizing that overcurrent situations can create dangerous conditions helps ensure appropriate safety measures and maintenance practices are implemented to mitigate fire risks in electrical systems.