In what conditions is it typically unsafe to work on overhead lines?

• A. When visibility is low
• B. During storms, high winds, or lightning
• C. At night only
• D. When temperatures are below freezing

Answer: (B)

Working on overhead lines is typically unsafe during storms, high winds, or lightning due to the inherent dangers posed by these weather conditions. Storms can bring heavy rain, making it difficult to safely handle electrical equipment and increasing the risk of equipment failure. High winds can destabilize ladders and aerial lifts, creating a hazardous environment for technicians who are working at heights. Lightning poses the greatest risk of all, as it can strike overhead lines or workers directly, leading to severe injury or fatalities.

While low visibility, working at night, or cold temperatures can present challenges, none pose the immediate and life-threatening hazards as severe weather events. For example, while working at night may be made safer with proper lighting, and low temperatures do have their concerns regarding cold exposure, they don’t introduce the same level of immediate danger as lightning or the potential disruption of strong winds or storms. Thus, optimal safety precautions dictate postponing work on overhead lines during such extreme weather conditions.