What does the term "circuit overload" refer to?

The term "circuit overload" specifically refers to a condition where the current flowing through a circuit exceeds its safe capacity. This can lead to overheating, potential damage to electrical components, and even risk of fire. The essence of an overload stems from two primary factors: connecting multiple devices to a single circuit, which can draw more current than the circuit is designed to handle, and exceeding the safe current capacity of the circuit.

When multiple devices are connected to a single circuit, they share the available current. If the combined current draw exceeds the capacity of the circuit, that leads to an overload situation. This is why the correct answer includes both the concept of connecting multiple devices and exceeding the circuit's current capacity, as both elements contribute to the risk of an overload. Understanding this concept is crucial to ensuring safe electrical practices and preventing hazards in electrical systems.