In message <[email protected]>, dated Wed, 10 Jun 2009, "Barker, Neil" <[email protected]> writes:
>Also, if there is a finish, it will generally reduce the surface >contact area (e.g. just the teeth of a star washer rather than the >entire area of the compressed washer). Yes, but in reality, there is enough contact. While I have seen an arc during high-current testing due to a loose connection, I've never seen one with a tight connection including a star washer contact, even with a 3 mm stud. The star washer may 'stick' to the metalwork after high-current testing, suggesting that point welding has occurred, or it may be just stuck to the paint. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Things can always get better. But that's not the only option. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - 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.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html 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]>
