Elevator Mechanic Practice Exam

What is a likely cause if you get shocked when attempting to move a car with a temporary run bug?

1. Loose control buttons

2. Ground wire not hooked up

3. Overloaded motor

4. Faulty temp run bug

The correct answer is: Ground wire not hooked up

The correct reasoning for the choice is that a ground wire not being hooked up can create a situation where electrical current does not have a safe path to the ground. In such scenarios, if you come into contact with parts of the system that are energized, you can receive an electric shock. Grounding is crucial in electrical systems to safely manage any stray current and prevent the risk of shock. While loose control buttons might cause operational issues, they would not typically lead to an electric shock directly. An overloaded motor could result in overheating or failure, but it wouldn’t necessarily cause a shock unless there were other underlying issues, such as improper grounding. A faulty temporary run bug may not function as intended, but it's less likely to directly cause electric shock compared to the absence of proper grounding.