What type of connections must be used for tensioned transmission and distribution line conductors?

For tensioned transmission and distribution line conductors, bolt or squeeze on connections are essential. These types of connections provide the necessary strength and reliability to withstand the mechanical loads and tension involved in high-voltage power lines. They are designed to maintain adequate electrical conductivity while ensuring that the physical integrity of the connection holds up under extreme weather conditions and the constant mechanical stress that conductors experience.

Additionally, bolt or squeeze connections allow for easier installation and maintenance, as they can be tightened or adjusted without extensive equipment or techniques. This is crucial in ensuring that the connections can withstand vibrations and other forces that could potentially loosen them over time.

In contrast, other connection types, such as soldered connections, may not provide the necessary mechanical strength for high-tension applications. Solder tends to be weaker under mechanical stress compared to bolted solutions and can degrade under high temperatures. Similarly, welded joints, while strong, can be more rigid and less adaptive to the strains that can occur in transmission lines, making them less practical for certain applications. Partial tension splices also do not offer the same level of reliability and security for maintaining conductor tension effectively in the long term. Thus, bolt or squeeze on connections are the preferred choice for ensuring safety and efficiency in electrical transmission systems