What do the terms "termination" and "joint" refer to in electrical insulation?

The terms "termination" and "joint" in electrical insulation specifically refer to the points where electrical cables connect to one another or to devices. Termination is the end connection of a cable, where a wire is securely attached to a terminal or connector, ensuring a reliable electrical connection. This could involve the use of connectors, lugs, or other means to properly finish the cable so it can effectively interface with other electrical components.

A "joint," on the other hand, describes the connection between two or more electrical cables. Joints are crucial for maintaining the integrity of electrical circuits, and they are generally designed to prevent issues like moisture ingress and mechanical strain.

Understanding these terms is essential for anyone working with electrical systems, as proper termination and joint methods can significantly impact the performance and safety of the overall electrical installation. The other options focus on materials, measurement techniques, or testing procedures, which are not directly related to the specific definitions of "termination" and "joint."