What is the required manufacturers rating for a terminal to use friction type connectors on pigtails?

The requirement for a manufacturer's rating for a terminal to use friction type connectors on pigtails aligns with UL1059 Terminal Blocks. UL1059 focuses specifically on terminal blocks, which are designed to accommodate multiple electrical connections while ensuring safety and reliability in various applications, including marine environments.

Using terminals that meet this standard ensures that the friction type connectors used in pigtail applications have undergone rigorous testing for performance and safety criteria. This helps in minimizing the risk of electrical failure or connection issues that can arise due to inadequate connector design or manufacturing quality.

Other options like UL310, UL1000, and UL1410 may pertain to different types of connectors and connectors' specifications, but they do not specifically address the standards for terminal blocks used in conjunction with friction type connectors. Hence, UL1059 is the correct rating that provides the necessary criteria for ensuring that the connectors and terminals used in these scenarios are appropriate and conform to safety regulations.