Ted, John Thanks for your input.
Chris > On 15 Nov 2021, at 14:33, John Woodgate <[email protected]> wrote: > > The nylon is under hoop stress, causing friction with the stud. Unless it > softens due to temperature, it remains effective. However, if there is any > doubt, an all-metal version is available. Do a Web search for 'all-metal > friction nuts'. > > ====================================================================================== > Best wishes John Woodgate OOO-Own Opinions Only > www.woodjohn.uk <http://www.woodjohn.uk/> > Rayleigh, Essex UK > Istae nunc praetereunt nisi non ubicumque > > > > On 2021-11-15 14:06, Chris Wordley wrote: >> Hello >> >> We sometimes come across products that employ a Nyloc nut as the sole means >> of securing (preventing accidental loosening of) a protective earth >> connection on a threaded stud. >> >> I’ve heard various views on the acceptability of this type of construction - >> some consider it OK provided the temperature is not high enough to cause the >> nylon insert to soften, others think that a separate spring/serrated washer >> is required since the nylon cannot be depended on in the longer term. >> >> I’d be interested to hear the views of others, particularly any CB or >> similar labs. I failed to uncover any IECEE decisions on this subject. >> >> Best Regards >> >> Chris >> >> - >> ---------------------------------------------------------------- >> This message is from the IEEE Product Safety Engineering Society emc-pstc >> discussion list. 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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: > http://www.ieee-pses.org/emc-pstc.html > <http://www.ieee-pses.org/emc-pstc.html> > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ > <http://product-compliance.oc.ieee.org/> can be used for graphics (in > well-used formats), large files, etc. > > Website: http://www.ieee-pses.org/ <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 > <http://www.ieee-pses.org/listrules.html> > For help, send mail to the list administrators: > Scott Douglas <[email protected] <mailto:[email protected]>> > Mike Cantwell <[email protected] <mailto:[email protected]>> > > For policy questions, send mail to: > Jim Bacher <[email protected] <mailto:[email protected]>> > David Heald <[email protected] <mailto:[email protected]>> > - ---------------------------------------------------------------- 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: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. 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: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
