Subject 1581

Bulletin Dated: May 16, 2008

SUMMARY OF TOPICS

The following topics are being recirculated:

4. Substantive Revisions to UL 1581 Including a) Deletion of Tables Containing Redundant Materials Requirements; b) Revisions to Materials Tables Including i) Revision of SI Units for Tensile Strength; ii) Deletion of Fahrenheit Temperature from Wire and Cable Temperature Ratings; iii) Deletion of Class Number for Material Identification, and iv) Miscellaneous Revisions for Consistency with Other Wire and Cable Standards and Requirements; and c) Establishment of New 7-Day Aging Requirements for 125 C Type EPDM and 90 C Type FRPE

5. Revision and Deletion of Requirements in UL 1581 Due to the Publication of UL 2556 and Miscellaneous Editorial Corrections and Clarifications