Final answer:
The statement about high-voltage wires being wrapped in insulating material is false; they are held aloft by insulating connectors but remain uninsulated to dissipate heat.
Step-by-step explanation:
The statement regarding high-voltage wires being wrapped in an insulating material is false. High-voltage wires, which are often seen connected to tall metal-frame towers, are indeed held aloft by insulating connectors to prevent the flow of electricity to the ground. However, these wires are not wrapped in insulating material. Instead, they are uninsulated to dissipate heat that builds up due to the electricity passing through them. Insulating such high-voltage wires would cause them to overheat and possibly fail. Aerial power lines' insulation comes from the air gap between the wires and any grounded object, and the insulating connectors (often made of porcelain or composite materials) securely attach the live wires to the towers while providing this necessary insulating gap.