What should be applied at all times when using an automatic splice to prevent conductor dropout?

Applying tension at all times when using an automatic splice is crucial to prevent conductor dropout. When the splice is properly tensioned, it ensures a secure connection between the conductors. This tension helps to maintain the integrity of the splice, keeping the conductors aligned and in contact, which is necessary for proper electrical conductivity and mechanical stability.

If tension is not maintained, the conductors can shift or separate, leading to poor connections or complete dropout. This is especially important in applications where movement or vibrations are present, as these conditions can further exacerbate the risk of disconnection.

The other options—heat, lubricant, and weight—do not address the fundamental need for maintaining a secure and stable physical connection between the conductors. Heat might be relevant in some splicing processes, such as soldering or certain types of heat shrink connections, but it does not inherently prevent dropout like tension does. Lubricant could aid in the installation process, but it does not provide the necessary force to keep the splice intact. Weight has no role in ensuring the connection remains secure and could even lead to issues if applied incorrectly. Thus, tension is essential for ensuring reliable and safe operation of automatic splices in electrical applications.