Hi Amund,
In your example if the product is designed as Class II, the protection against electrical shock is provided by double or reinforced insolation means (i.e. a plastic nonconductive enclosure). The use of a three-pronged power cord can be justified for EMI reasons of power supply, but the connection to protective earthing does not provide a mean of protection against electrical shock. Such, the product remain Class II. I hope that above help. Best Regards, Steli Steli Loznen, M.Sc., SM-IEEE Past-VP for Technical Activities and Member of BoG IEEE-PSES Convener IEC 62A/MT 62354 17-3 Shaul HaMelech Blvd. Tel Aviv 6436719 Israel Tel:+972-3-6912668 Fax:+972-3-6913988 Mobile:+972-54-4818816 e-mail: [email protected] From: [email protected] <[email protected]> Sent: Monday, May 19, 2025 2:06 PM To: [email protected] Subject: [PSES] Safety - Class I or Class II A product is designed as a Class II product. But the product has a protective earth (PE) terminal connection. This PE-connection has no further connection on the PCB. It exists only so the electricians have a place to connect the PE wire, which always are present in the AC cable. Is such a product a Class II or does the PE connection, make it Class I? BR Amund ________________________________ 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 [email protected]<mailto:[email protected]> All emc-pstc postings are archived and searchable on the web at: https://www.mail-archive.com/[email protected]/<https://www.mail-archive.com/[email protected]/%20> Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe)<https://ewh.ieee.org/soc/pses/list.html> List rules: https://pses.ieee.org/wp-content/uploads/2024/12/EM-PSTC-List-Rules.pdf For help, send mail to the list administrators: Mike Sherman at: [email protected]<mailto:[email protected]> Rick Linford at: [email protected]<mailto:[email protected]> For policy questions, send mail to: Jim Bacher at: [email protected]<mailto:[email protected]> ________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 - ---------------------------------------------------------------- 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 [email protected] All emc-pstc postings are archived and searchable on the web at: https://www.mail-archive.com/[email protected]/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) List rules: https://pses.ieee.org/wp-content/uploads/2024/12/EM-PSTC-List-Rules.pdf For help, send mail to the list administrators: Mike Sherman at: [email protected] Rick Linford at: [email protected] For policy questions, send mail to: Jim Bacher: <[email protected]> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
