Massachusetts Hoisting License Practice Test

What should you do if the boom of your unit contacts an energized power line?

1. Get out of the cab and run

2. Stay in the cab until the lines are de-energized

3. Try to move the boom away

4. Call emergency services immediately

The correct answer is: Stay in the cab until the lines are de-energized

Staying in the cab until the lines are de-energized is the safest action to take when the boom of your unit contacts an energized power line. When in contact with an energized line, the equipment you're operating could become energized as well, creating a risk of electric shock or electrocution if you exit the cab. The metal structure of the equipment can conduct electricity, and touching the ground while still in contact with the energized boom can result in a serious injury or death due to electric shock. By remaining in the cab, you reduce the risk of electricity passing through your body. The safest course of action is to wait for utility professionals to arrive and de-energize the lines, as they have the training and equipment to handle the situation safely. It's important to keep notifying anyone in the vicinity to keep their distance until the situation is secured. Other choices pose significant risks to safety. Getting out of the cab could expose you to electrical current. Attempting to move the boom away while it is still in contact with the line could also create a dangerous situation. Calling emergency services while you remain in the cab could be an option, but the critical action to take is to stay put until professionals can ensure your safety and that of others nearby.