Final answer:
The statement about Tubular Welded Frame Scaffold Frames being installed without feet or jacks is false as they require a stable base. Similarly, high-voltage wires are held by insulating connectors but are not wrapped in insulating material, making the statement false.
Step-by-step explanation:
The statement that Tubular Welded Frame Scaffold Frames may be installed without feet or jacks is false. Scaffold frames require a stable base to ensure the safety and stability of the structure. Without feet or jacks, the scaffold could shift or collapse, leading to potentially hazardous situations. It is important to always follow the manufacturer's instructions and safety guidelines when installing scaffolding.
The high-voltage wires that you see connected to tall metal-frame towers are indeed held aloft by insulating connectors; however, these wires are not wrapped in an insulating material. Instead, they are bare and rely on the surrounding air, which is an insulator, to prevent unwanted current flow to the ground or between wires. So, the correct answer to the statement is false.