What action is crucial when approaching downed power lines?

When approaching downed power lines, it is crucial to stay at least 20 feet away because downed lines can be extremely dangerous due to the risk of electrocution. Power lines are often live, meaning they carry electricity that can cause severe injury or death to anyone who comes into contact with them. The recommendation to maintain a safe distance is based on the fact that electricity can jump or arc to a person or object even at a distance, hence the guideline recommends this minimum safe space.

Moreover, it is also important to assess the situation without putting yourself in harm's way. Calling emergency services is necessary to report the hazard, but approaching the lines should be avoided to prevent any risk to personal safety. Touching the lines or walking over them presents significant dangers and should never be attempted. Maintaining a safe distance is the best course of action to ensure personal safety and allow trained professionals to handle the situation.