I want to make sure I’m properly de-rating the current capacity of hook-up wire.
A 105º hookup wire size 10 AWG is rated 58 amps at 30ºC. At 50ºC (40ºC out side temp and 10ºC internal temp rise) I have to de-rate by .86 which would now make it handle only 49.9 amps. If I bundle 2 to 5 wires together, I have to de-rate another .8 which would make it only rated for 39.9 amps. So do I de-rate the de-rated value or is there some other method that is more correct? What is considered a “Bundle”? If I cable tie 2 wire together is this considered a bundled? Is there an additional de-rating for wire length of hookup wire? I assume wire length only affected voltage drop, not current rating. Thanks to all for your help. The Other Brian _________________________ LECO Corporation Notice: This communication may contain confidential information intended for the named recipient(s) only. If you received this by mistake, please destroy it and notify us of the error. Thank you. - 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]>
