Scott, et al,
Having worked with developing markings for 60950 and 62368-1 it is clear that there needs to be latitude given in the final marking depending upon the details of the design and the approaches that seem to be the best fit for the application. At the highest level it is clear that full color, legible complete markings are the most desirable. However, there are issues in making that work in every instance. Joshua’s example of a marking stamped in the stainless steel is a good example of that; it provides the marking in a durable way where it is applicable. Hopefully, this type of practicality will not be forgotten in our work. :>) br, Pete Peter E Perkins, PE Principal Product Safety & Regulatory Affairs Consultant PO Box 1067 Albany, ORe 97321-0413 503/452-1201 IEEE Life Fellow IEEE PSES 2020 Distinguished Lecturer <http://www.researchgate.net/Peter%20Perkins> www.researchgate.net search my name <mailto:p.perk...@ieee.org> p.perk...@ieee.org Entropy ain’t what it used to be From: Scott Xe <scott...@gmail.com> Sent: Thursday, May 27, 2021 7:55 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Hot surface sign Dear Josh, Although the contrast of warning size is not perfect, there is no specific requirement given and common on the product. Regards, Scott On Wed, 26 May 2021 at 22:14, Wiseman, Joshua <joshua.wise...@orthoclinicaldiagnostics.com <mailto:joshua.wise...@orthoclinicaldiagnostics.com> > wrote: Scott, At my previous employer we had the symbol stamped into the stainless steel of a part on the commercial griddle. A traditional label would not withstand the heat in this instance and with-it being part of the sheet metal it me all the cleaning and legibility requirements. It’s hard to see but I took a snippet of one from a video of the griddle on YouTube. Josh Joshua Wiseman Staff Engineer, Product Safety/EMC/Systems From: Scott Xe <scott...@gmail.com <mailto:scott...@gmail.com> > Sent: Wednesday, May 26, 2021 10:04 AM To: EMC-PSTC@LISTSERV.IEEE.ORG <mailto:EMC-PSTC@LISTSERV.IEEE.ORG> Subject: [PSES] Hot surface sign EXTERNAL SENDER: Verify links, attachments and sender before taking action In some cooking appliances, there are some hot surfaces that may cause burn injury and safety standards suggest putting a hot surface sign to alert the users. * Is there any specific colour requirement? Common practice is black colour on yellow background or white colour on black background. * Is an embossed sign black on black considered as a legible sign in EU criteria perspective? * In case of ink-printed label, is it put on the top of the hot surface or next to the hot surface? If on the top of surface, the colours are protected from heat degradation and specialized adhesives should be used to withstand higher temperatures. Is there any test criteria for verification? Thanks and regards, Scott - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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