Which method involves joining conductors using twin tubes and twisting them with tools?

The method that involves joining conductors using twin tubes and twisting them with tools is known as a spool joint. This process creates a secure connection between conductors, effectively ensuring continuity of the electrical circuit. The use of twin tubes allows for the conductors to be aligned and twisted safely and tightly, providing a robust mechanical and electrical connection.

In contrast, other joining methods may have different applications or requirements, which may not involve the specific technique of using twin tubes or twisting. For example, compression joints typically utilize a squeezing action to create a strong connection, while sleeve joints involve inserting conductors into a sleeve and securing them without twisting. Splice joints can refer to a variety of methods used to connect wires, but they do not specifically incorporate the twist and tube approach. Therefore, the spool joint method is distinct in utilizing twin tubes and twisting, which is essential for the quality and reliability of the connection in many electrical applications.