Question

When walking or working on scaffolds, you should always be aware of the hazards of overhead owerlines

A True
B False

Answer 1

It is true that when working on scaffolds, one should always be cautious of overhead power lines due to electrocution hazards. High-voltage wires are not insulated, and working 'one-handed' helps to minimize electrical current passing through the body. Lightning can conduct through trees as wood is a poor conductor.

Step-by-step explanation:

When walking or working on scaffolds, you should always be aware of the hazards of overhead power lines. This statement is True. Working around high-voltage power lines is very dangerous because they can carry electricity to the scaffold if contact is made, potentially causing electric shock, burns, or even electrocution.

Answering the related questions:

1. High-voltage wires are typically not wrapped in insulating material; they are held up by insulating connectors to prevent electricity from grounding. Therefore, the statement is False.
2. Advising to work 'one-handed' or 'keep one hand in your pocket' when working with high-power electric circuits is a safety technique to minimize the path of electrical current through the body, thus reducing the risk of serious harm.
3. Lightning can travel through wood, as it is a conductor, albeit not a very good one. So, lightning can indeed travel through a tree to reach Earth, which means the statement is True.