Hi Rich, Thanks for your advice! 😊 Regarding the flat washer, can it be the flat ring lug of the connecting wire instead?
Between the screw head and the metal enclosure, do we need a flat washer? That is to say: screw head -> flat washer -> metal enclosure -> on other side of metal enclosure with paint removed in the contact area with the flat ring lug -> flat ring lug of the earthing wire -> split ring lock washer -> plain nut to establish a good electrical earth connection. Thanks and regards, Scott Sent from Mail for Windows 10 From: Richard Nute Sent: Friday, 10 August 2018 03:11 AM To: [email protected] Subject: Re: [PSES] External toothed star washer used in earth connection "The lock washer should not interface between the bolt head and the metal, the lock washer should be between the head and a flat washer." That locks the bolt to the flat washer so they turn together. 😊 Establishes a good electrical connection between the bolt and the flat washer! 😊 Rich - ---------------------------------------------------------------- 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]> - ---------------------------------------------------------------- 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]>
