According to EN 61010-1 (test equipment), which uses it, <exclamation point in a triangle> is symbol B.3.1, "Caution (refer to accompanying documents)", from ISO 3864: SAFETY COLOUR AND SAFETY SIGNS.
FYI, same source (EN61010) also lists, among others: "Caution, risk of electric shock" (lightning bolt in triangle), symbol B.3.6, also from ISO 3864. "Caution, hot surface" (3 vertical wavy lines above a horizontal line), symbol 5041, from IEC [60]417. Note that IEC 417 was renumbered to IEC 60417, then superseded by: IEC 60417-1 GRAPHICAL SYMBOLS FOR USE ON EQUIPMENT - PART 1: OVERVIEW AND APPLICATION and IEC 60417-2 GRAPHICAL SYMBOLS FOR USE ON EQUIPMENT - SYMBOL ORIGINALS Another source of symbols _may_ be IEC 60617-2, "GRAPHICAL SYMBOLS FOR DIAGRAMS - SYMBOL ELEMENTS, QUALIFYING SYMBOLS AND OTHER SYMBOLS HAVING GENERAL APPLICATION". (Despite the title, EN 61010-1 suggests that the "3~" symbol [# 02-02-06] may be useful on rating label of 3-phase equipment.) Glyn R. Garside Senior Engineer, Industrial Machinery Division TUV Rheinland of North America, Inc. (Chicago Office) 1945 Techny Rd, Unit 4, NORTHBROOK, IL 60062-5357, USA http://www.us.tuv.com TEL 847-562-9888 ext 25 Comments are personal, not corporate / E&OE / batteries not included / some assembly required / etc. ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson: pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
