Where can I find a design guide for power cords that shows the minimum size of the cordage vs the current rating of the Plug (for US and Canada)?
We have a power cord with a 30A Twistlock Plug and 14AWG cordage. It is used on a device that has a double pole 15A circuit breaker (supplementary protection). Canada inspectors are saying that with a 30A plug the cord must also be rated 30A, which would be 10AWG. I didn’t think what was correct. I’m not very versed in the US NEC (let alone Canada’s NEC), but section 240-4 (1999 version) shows that the minimum cordage size for a 30A plug would be 16AWG, so our 14AWG cordage should be ok. I know you all are probably wondering why we would put a 30A plug on a power cord for a 15A device. It is because this device can be used with other devices we sell that also uses the 30A plug. So out of consistency we try to standardize on this plug where we can. More Info. The device we are powering has a Steady State Current Rating of 14A (calculated worst case). Max Current measured is 11A. Max Continuous Current is only 1.5A. _________________________ 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]>
