What condition in electrical systems is described as an overload?

An overload condition in electrical systems occurs when more current flows through a circuit than it is designed to handle. This situation can arise when too many devices are connected, or devices drawing more current than expected are operated simultaneously. When the current exceeds the circuit's rated capacity, it can generate excessive heat, potentially causing damage to wiring, insulation, and devices, and can also lead to tripping circuit breakers or blowing fuses as protective measures.

Understanding the concept of overload is important for maintaining the safety and integrity of electrical systems. It is crucial to ensure that the current drawn does not exceed the limits established by the system's design to prevent hazardous situations. While the other choices touch on electrical conditions, they do not accurately represent the specific condition denoted as an overload.