UL 60079-25:2ED 2011-12-02

This revision of ANSI/UL 60079-25 dated June 12, 2020 is being issued to update the title page to reflect the reaffirmation of its ANSI approval. No changes in requirements have been made.

This part of IEC 60079 standard contains the specific requirements for construction and assessment of intrinsically safe electrical systems, type of protection “i”, intended for use, as a whole or in part, in Class I, Zone 0, 1, or 2, or Zone 20, 21, or 22 hazardous (classified) locations as defined by the National Electrical Code® (NEC), ANSI/NFPA 70® in locations in which the use of Group I, II or III apparatus is required . NOTE 1 This standard is intended for use by the designer of the system who may be a manufacturer, a specialist consultant or a member of the end-user’s staff.