What do spring-loaded wedges in a joint primarily provide?

Spring-loaded wedges in a joint are designed to provide mechanical tension, which is crucial for maintaining a secure and reliable electrical connection. These wedges work by applying a consistent force on the conductors within the joint. This force helps to keep the conductors tightly pressed together, ensuring that there is minimal resistance at the connection point.

The tension created by the spring-loaded design compensates for any thermal expansion or contraction that might occur due to changing temperatures, thus preventing loosening of the joint over time. This mechanical tension is essential not only for the integrity of the connection but also for maintaining optimal electrical performance, as a loose connection can lead to increased resistance and potential overheating.

In addition, while spring-loaded wedges contribute to the overall stability of the connection, other options such as electrical isolation, conductivity enhancement, or corrosion resistance are not their primary functions. Those characteristics might be achieved through different means or materials in the joint design, but the spring-loaded wedges specifically focus on creating and maintaining mechanical tension.