All, I've been reviewing the UL 9540A fire test method, and a plywood sensor wall is recommended: "19.05-mm (3/4-in) plywood installed on wood studs and painted flat black." But no grade of plywood is mentioned. In the past, I've seen references to Grades A and B, but I assume this is a way of minimizing voids and knots, usually for some form of ruggedness testing. Does anyone know if plywood grade is standard practice at any of the accredited test labs for UL 9540?
thanks! -Doug Douglas E Powell Colorado, USA LinkedIn <https://www.linkedin.com/in/coloradocomplianceguy/> (UTC-06:00, US-MDT) - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to EMC-PSTC@LISTSERV.IEEE.ORG All emc-pstc postings are archived and searchable on the web at: https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) List rules: https://ewh.ieee.org/soc/pses/listrules.html For help, send mail to the list administrators: Mike Sherman at: msherma...@comcast.net Rick Linford at: linf...@ieee.org For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
