Tried asking UL but no response.
I have a special type of tubing that I am have manufacture red to UL94HB -40 and I am having a small hang-up with the acceptance criteria. Must the material be self extinguishing or is it just that the burn rate must be less than 40mm/min. The material is <= 3mm. I think the correct answer is OR condition – self extinguish before 100 mm OR have a burn rate < 40mm. The wrong interpretation, I think is the AND condition – self extinguish before 100 mm AND a burn rate < 40 mm Does anybody have the actual UL 94 or the IEC burn specification? Thanks Gary - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
