What factor increases the likelihood of an arc flash incident?

Exposed energized conductors significantly increase the likelihood of an arc flash incident because they present a direct pathway for electricity to flow between conductors or to ground. When conductors are not properly insulated or are accessible, they can unintentionally come into contact with other conductive materials or tools, which may create a short circuit. This contact can result in a fault that produces an arc flash—a rapid release of energy due to the electrical discharge through the air.

Arc flashes are dangerous events that release thermal energy sufficient to cause severe burns and can lead to significant damage to equipment, injuries, and even fatalities. Therefore, maintaining insulated and secured electrical systems is essential in reducing the risk of arc flash incidents. Proper maintenance and operation, as well as using insulated tools, are practices aimed at preventing exposure to energized conductors, which is why those options are considered safety measures rather than risk factors.