Final answer:
The statement about high-voltage wires being wrapped in insulation is false; they are held aloft by insulating connectors but are bare, with air acting as the insulator.
Step-by-step explanation:
The statement about high-voltage wires being wrapped in an insulating material is false. The high-voltage wires that are seen connected to tall metal-frame towers are indeed held aloft by insulating connectors. However, these wires are not wrapped in an insulating material; they are actually bare. The insulating connectors prevent the electricity from grounding through the towers, but the air around the wires acts as the insulator for the high-voltage lines themselves. When creating safe work zones, practices like establishing controlled access zones are critical for ensuring only authorized personnel are near these high-risk areas.