Steve, I agree, you need a positive bonding connection back tot he PE point.
The WAGO terminal are excellent. They have some spectacular test videos on their web site showing the effects of overcurrent on their terminal blocks, and I have personally found them to be highly reliable in some demanding applications. You will find that the Wago products conform to IEC, UL and CSA requirements. Some types you can even buy at Home Depot these days, if you’re in a pinch, however, I’ve never seen the grn/yel bonding terminals there. -- Doug Nix d...@mac.com "To begin with the end in mind means to start with a clear understanding of your destination. It means to know where you're going so that you better understand where you are now so that the steps you take are always in the right direction." – Stephen R. Covey, The Seven Habits of Highly Effective People > On 18-Jun-19, at 14:38, Steve Brody <sgbr...@comcast.net> wrote: > > HI all, > > > > I have a client with whom I am having a discussion about grounding for an EN > 60204-1 product. The product consists of 3 sub-modules all of which use > mains power derived from the first module where the external mains comes into > the unit. > > > > In the first module the ground from the branch circuit goes to a ground stud, > lockwasher and nut, and from there a ground wire goes from the stud to a DIN > rail mounted Wago terminal block designed for grounds, as it is green/yellow > in color, which is screwless and uses spring pressure to secure the wire in > place. Other internal grounds in this module also connect to this block. > > > > The second module receives the main ground from the first module in a similar > arrangement, and the third module gets it's ground from the second module. > > > > I have pointed out to my client that, in accordance with all safety standards > I am aware of, and a figure in EN 60204-1 on grounds, that modules 2 and 3 > must have ground leads that goes back to the point where the main ground > comes into the unit originally, and not daisy chained from module to module. > > > > I don't think there is anyone who will disagree with this but I did say I > would ask the question. Second question is do you thin there is a problem is > using a screwless pressure connector for the grounds, as opposed to a > stud/lockwasher/nut? > > > > Thoughts and comments would be appreciated by reply to his or privately at > stev...@productehsconsulting.com > <https://connect.xfinity.com/appsuite/stev...@productehsconsulting.com>- > ---------------------------------------------------------------- > 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 <mailto:emc-p...@ieee.org>> > > 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 <sdoug...@ieee.org <mailto:sdoug...@ieee.org>> > Mike Cantwell <mcantw...@ieee.org <mailto:mcantw...@ieee.org>> > > For policy questions, send mail to: > Jim Bacher <j.bac...@ieee.org <mailto:j.bac...@ieee.org>> > David Heald <dhe...@gmail.com <mailto:dhe...@gmail.com>> > - ---------------------------------------------------------------- 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 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 <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
