Summary of Topics s2420_1_sum.htmlSummary of Topics
This reaffirmation of ANSI/UL 2420 dated October 28, 2025 is issued to update the title page to reflect the most recent designation as a Reaffirmed American National Standard (ANS). No technical changes have been made.
As noted in the Commitment for Amendments statement located on the back side of the title page, ULSE and CSA are committed to updating this harmonized standard jointly. However, the revision pages dated October 28, 2025 will not be jointly issued by ULSE and CSA as these revision pages only address UL ANSI approval dates.