Wow! That's quite a pretty nasty rumor.
If it is true it will certainly confuse the utility side of things even more. Where did you hear this?
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| Proposed NESC Table 410 Provisions https://brainfiller.com/arcflashforum/viewtopic.php?f=13&t=122 |
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| Author: | WodyM [ Mon May 05, 2008 6:34 pm ] |
| Post subject: | Proposed NESC Table 410 Provisions |
I heard that NESC is considering revising either Table 410-1 or 410-2 or both in the near future. Has anyone else heard this and do you have any more information? Thanks |
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| Author: | Catcher13 [ Mon May 12, 2008 3:21 pm ] |
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Wow! That's quite a pretty nasty rumor. If it is true it will certainly confuse the utility side of things even more. Where did you hear this?
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| Author: | acobb [ Mon May 12, 2008 8:01 pm ] |
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Table 410 Revision First I have heard! It is my understanding that the NESC had gone to a 5 year revision cycle (hence 2012), so if this is true then someone involved in the process needs to let us know that early revisions are forthcoming! Could make a huge difference in the advice that we give to our clients today!!!!! Alan |
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| Author: | Catcher13 [ Tue May 13, 2008 7:48 am ] |
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That's going to be huge. There is so much confusion as it is between the NESC tables, IEEE methods, the physics models of ArcPro and Duke programs, 3 phase vs. 1 phase on overhead lines etc. As soon as anyone knows any info, please let us all know. |
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| Author: | apowerengr [ Thu Aug 14, 2008 7:15 pm ] |
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I just saw the draft changes yesterday which involve only the recommendations under 1000 volts. Not sure if something will be released as a TIA before the next code cycle or not. I have to admit I don't find the NESC confusing at all - is there something in particular you have questions about? |
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| Author: | acobb [ Thu Aug 14, 2008 8:16 pm ] |
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Confusion? I do not find the NESC confusing at all. If fact it is so simple that I have wondered if the arc flash portion was nothing more than an after thought. Alan |
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| Author: | stevenal [ Thu Feb 12, 2009 10:23 am ] | ||
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Too different subjects seem to be getting confused here. The [url="http://grouper.ieee.org/groups/nesc/TIA_5Sept2008.pdf"]TIA[/url] has been released, dealing with the miscalculations originally done on table 2. Not sure why this was a TIA, and not errata. I've attached a proposed 2012 table 1, dealing with secondary voltages. Presumably the '07 tables will be renumbered for 2012.
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| Author: | acobb [ Fri Feb 13, 2009 5:00 pm ] |
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Stevenal, Be sure to check you private messages |
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| Author: | Electric John [ Tue Mar 03, 2009 2:57 pm ] |
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Hi guys, is everyone aware of this modification. I just learn about this modification! TIA September 8, 2008 http://grouper.ieee.org/groups/nesc/TIA_5Sept2008.pdf Is there any other modifications that you are aware of? Thanks |
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