Connectors for conductors that are more finely stranded must be _____ for the specific conductor classes.

The correct choice emphasizes the importance of proper identification when selecting connectors for finely stranded conductors. In the context of the National Electrical Code (NEC), connectors must be specifically identified for the class of conductor they are intended for to ensure safety and compatibility. This identification ensures that the connector can handle the physical and electrical characteristics of the stranded conductors it is used with, including the current-carrying capacity and mechanical strength.

When connectors are properly identified for their specific application, it minimizes the risks of electrical failures, overheating, and potential safety hazards. The requirement for proper identification promotes adherence to code regulations and facilitates the installer’s understanding of which connectors are suitable for each type of conductor, thus ensuring that installations are safe and reliable.

The other options, while they may seem relevant, do not specifically capture the essential requirement of specifying which connectors are suitable for various classes of finely stranded conductors as outlined by the NEC. This highlights the critical aspect of ensuring that all components in an electrical system are properly matched and compliant with regulatory standards.