Subject 746A (94, 746B, 746C, 746D, 1692, 1694)

Bulletin Dated: October 29, 2013

SUMMARY OF TOPICS

The following topics were discussed at the meeting of the Standards Technical Panel for Polymeric Materials:

1. Relative humidity tolerance for sample conditioning (UL 94)

2. Relative humidity tolerance for sample conditioning (UL 746A)

3. Modify the test program codes C and F for polymer variation cases (UL 746A)

4. Specialized Analysis of Polymer Variations (UL 746A)

5. Realignment of Table 9.1 Ingredient Concentrations (746A)

6. Research results of testing polymeric materials with a DC HAI Test Procedure (UL 746A)

7. Consideration of additional test methods for polymer characterization (UL 746A)

8. Relative humidity tolerance for sample conditioning (UL 746B)

9. Oven temperature Interval selection for RTI Aging (UL 746B)

10. Revise the RTI rating Increments: Is there a better way to assign RTI's from the measured thermal index values? (746B)

11. Example calculation for Related Material (746B)

12. Generic Thermal Index of PPA (UL 746B)

13. Relative humidity tolerance for sample conditioning (746C)

14. Side-by-side test requirement for exposed and un-exposed samples after UV and water immersion test (746C)

15. Consideration of ways to reduce the possibility of field incidents relating to arc tracking (746C)

16. Density reduction using MuCell process beyond that specified in UL 746D, Exception 2 of 5.1 - Blowing Agents

17. Upcoming ANSI Reaffirmation for UL 1692

18. Continuing Certification