>From the 2020 Edition, emphasis is mine. "670.6 Surge Protection. Industrial machinery with safety interlock control devices *not effectively protected from voltage surges on the incoming supply circuit* shall have surge protection installed."
It does not say where this protection needs to be applied, so I assume it can be within the machine or somewhere in machine supply. Also, does the product you are inquiring about fall under the definition of *Industrial Machinery*, NFPA 79? -Doug Douglas E Powell Laporte, Colorado USA doug...@gmail.com LinkedIn <https://www.linkedin.com/in/coloradocomplianceguy/> (UTC -06:00) Mountain Time (US-MDT) On Tue, Nov 1, 2022 at 11:55 AM Brian Kunde <bkundew...@gmail.com> wrote: > It just came to my attention that section 670.6 of the US National > Electric Code 2017 requires a listed Surge Protection Device (SPD) to be on > any Industrial Machine that has an Interlock, or I assume any kind of > safety function. Is this true? The only information I can find on the > internet is from the companies that make and sell the SPDs which can often > be very one sided. Is there more to this story that I am missing? > > Does the Surge Protection have to be listed? Are there specifications for > the SPD? Is there a Surge Immunity Test that be used to validate and > verify whether an additional SPD is required or not? > > Thanks, > The Other Brian > - > ---------------------------------------------------------------- > > 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-p...@ieee.org> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) <http://www.ieee-pses.org/list.html> > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Mike Cantwell <mcantw...@ieee.org> > > For policy questions, send mail to: > Jim Bacher <j.bac...@ieee.org> > David Heald <dhe...@gmail.com> > ------------------------------ > > 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 <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
