Identify one cause of electrical fires.

Overloaded electrical circuits are a well-known cause of electrical fires. When too many devices are plugged into a single circuit, the circuit can exceed its designated capacity, leading to overheating. This excess heat can damage the wiring insulation, potentially igniting a fire. The risk is heightened in older wiring systems that may not have been designed to handle the electrical demands of modern devices.

On the other hand, improper grounding can also lead to safety issues but does not directly cause fires as frequently as overloaded circuits do. High-quality wiring materials and regular maintenance checks actually contribute to fire prevention rather than being a cause of electrical fires, as they ensure that the electrical system is functioning correctly and safely.