UL-1581 2008协会标准

UL 1581

Reference Standard for

Electrical Wires, Cables, and

Flexible Cords

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Revision to Mandrel Requirements to Permit the Use of Smaller Sized Mandrels

Specification of Nichrome Support Wire for Repeated Flame Tests

Correction of Inadvertent Omission of Char Length Requirements from Horizontal

Specimen/FT2 Flame Test

Substantive Revisions 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

formatting differences resulting from the use of UL’s new electronic publishing system, please note that

additional pages (on which no requirements have been changed) may be included in revision pages due

to relocation of existing text and reformatting of the Standard.

Text that has been changed in any manner is marked with a vertical line in the margin. Changes in

requirements are marked with a vertical line in the margin and are followed by an effective date note

indicating the date of publication or the date on which the changed requirement becomes effective.

The new and/or revised requirements are substantially in accordance with UL’s Proposal(s) on this subject

dated November 16, 2007, March 14, 2008, and May 16, 2008.

The revisions dated July 28, 2008 include a reprinted title page (page1) for this Standard.

As indicated on the title page (page 1), this UL Standard for Safety is an American National Standard.

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Copyright © 2008 Underwriters Laboratories Inc.

This Standard consists of pages dated as shown in the following checklist:

1-150............................................................................July 28, 2008