Which of the following is NOT a required UL lightning protection system label?

The UL lightning protection system requires specific labeling for various components to ensure safety and compliance with established guidelines. Each component in the system has its designated label indicating its purpose and specifications.

The label for the air terminal, ground terminal, and bonding are all essential because they provide critical information regarding the function and installation details of those components. These labels ensure that users and inspectors can easily identify that the system meets the required standards for lightning protection.

In contrast, the "Conductor A label" is not a recognized requirement within the UL standards for lightning protection systems. This means it does not hold the same level of importance or necessity as the other labels, which play vital roles in identifying and confirming the appropriate installation and function of the lightning protection system components.