During lifting operations, in case of a wire breakage or the boom coming into contact with high-voltage lines, the entire machine is still at an equipotential state (i.e., no voltage difference). Inside the crane, the current will not pass through the human body to cause harm. Operators should first overcome their fear, and on-site personnel should secure the danger zone, warning those outside the vehicle not to touch it. If the operator can disconnect the boom from the power source (including leaving the danger zone), the danger can be eliminated. If it is difficult to cut off the power and leave the source, operators must not step down lightly. They should calmly secure all control levers and then jump off the vehicle with both feet together (note: after jumping off, do not touch the vehicle with your body). After jumping down, continue to jump out with both feet or one foot to leave the danger zone (absolutely do not step over). Since the body remains at an equipotential point throughout this process, electric shock is avoided due to body conductivity. Generally, jump at least 20 meters away from the source.