UL 2556 PDF
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UL Standard for Safety Wire and Cable Test Methods – Fifth Edition; Reprint with Revisions Through and Including January 28, 2026
1 Scope
1.1 This standard describes the apparatus, test methods, and formulas to be used in carrying out the tests and calculations required by wire and cable standards.
1.2 Specific acceptance requirements are found in individual product standards.
1.3 Where a test method indicates a “specified” test parameter or condition, the parameter or condition is found in the individual product standard.
Summary of Topics
This revision of ANSI/UL 2556 dated June 3, 2021 is being issued to editorially correct the formula for wraps, in G.1(b).
As noted in the Commitment for Amendments statement located on the back side of the title page, UL, CSA, and ANCE are committed to updating this harmonized standard jointly. However, the revisions dated June 3, 2021 will not be jointly issued by UL, CSA, and ANCE as these revisions address a UL editorial correction only.
| Edition | 5 |
|---|---|
| Published Date | April 30, 2021 |
| Last Revision | January 28, 2026 |
| Language | English |






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