Which electrical hazard involves a flashover from a fault that causes attendant ignition?

The phenomenon of an arc flash involves a sudden release of energy due to an electrical fault, and it is characterized by an intense flash of light and heat. When there is a fault in the electrical system, such as when a live conductor makes unintended contact with a ground or another conductor, it can create a path for current to flow that results in a significant increase in temperature and pressure. This rapid expansion of gases can lead to an arc flash, which not only poses a severe burn risk to anyone nearby but can also ignite flammable materials in the surrounding environment.

Understanding the mechanics of arc flash is crucial for ensuring safety in electrical work. In contrast, while short circuits, ground faults, and overload situations are certainly electrical hazards, they do not typically create the same instantaneous flammable conditions that are characteristic of arc flash incidents. Short circuits usually involve a direct connection that bypasses the normal load and can cause damage and potential overheating, but they do not inherently lead to the same explosive ignition as an arc flash. Ground faults occur when electrical current flows through an unintended path to the ground, which can present its own risks but again lacks the violent discharge associated with arc flashes. Overloads, on the other hand, involve excessive current draw leading to overheating and potential