This is likely based on the NEC which does not allow the conduit to be the sole means of grounding. This said, I doubt the addition of the copper conductor will make much difference in a real life scenario. Doug -- Douglas E Powell doug...@gmail.com https://www.linkedin.com/in/dougp01
I should have said that for lightning, all the conduit needed to do was act as a lightning rod.
-Ken Javor Phone: (256) 650-5261 From: Ken Javor <ken.ja...@emccompliance.com> Reply-To: Ken Javor <ken.ja...@emccompliance.com> Date: Tue, 14 May 2019 21:47:10 -0500 To: <EMC-PSTC@LISTSERV.IEEE.ORG> Conversation: Just curiosity Subject: Re: [PSES] Just curiosity The steel conduit is all-around protection. I doubt it is one continuous piece, but as long as sections make ohmic connections, I don’t see a problem. It’s just acting as a lightning rod. Ken Javor Phone: (256) 650-5261 From: Rene Charton <rene.char...@tuv.com> Date: Wed, 15 May 2019 00:56:06 +0000 To: Ken Javor <ken.ja...@emccompliance.com>, "EMC-PSTC@LISTSERV.IEEE.ORG" <EMC-PSTC@LISTSERV.IEEE.ORG> Conversation: Just curiosity Subject: RE: Just curiosity I guess the steel conduit is for electrostatic shielding, but probably cannot carry the surge current if a lightning strikes. Is the steel conduit one continuous tube? I doubt that. 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From: Ken Javor <ken.ja...@emccompliance.com> Sent: Wednesday, May 15, 2019 08:20 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Just curiosity In the below pictures, galvanized steel conduit is paralleled by copper conductor that is a lightning conductor to ground. Question: why is that necessary? Ken Javor Phone: (256) 650-5261 - ---------------------------------------------------------------- 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) <http://www.ieee-pses.org/list.html> 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> - ---------------------------------------------------------------- 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) <http://www.ieee-pses.org/list.html> 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> ---------------------------------------------------------------- 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/ For help, send mail to the list administrators: For policy questions, send mail to: ---------------------------------------------------------------- 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/ For help, send mail to the list administrators: For policy questions, send mail to: | ||
- Re: [PSES] Just curiosity Ken Javor
- Re: [PSES] Just curiosity Doug Powell
- Re: [PSES] Just curiosity Edward Price
