Hello Amund, I most often use UL 61800-5-1 that contains numerous and significant national deviations from IEC 61800-5-1. Most of these adapt the requirements of the IEC standard to those of the NEC NFPA 70, and to those of UL component standards. If you have a specific standard in mind, you may register for Digital View in the UL Standards Sales Site and check national differences for free: For UL 61800-5-1 (https://standardscatalog.ul.com/ProductDetail.aspx?productId=UL61800-5-1_1_S_20120608), there are 170 pages of national differences.
Kind regards, Bernd Von: Amund Westin <am...@westin-emission.no> Gesendet: Donnerstag, 21. Januar 2021 11:40 An: EMC-PSTC@LISTSERV.IEEE.ORG Betreff: [PSES] UL = IEC ?? When IEC publish a standard, do UL adopt it as is, or do they modify it? I guess this will vary form case to case. Right? Best regards Amund - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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