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Proposed NESC Table 410 Provisions

Discussion in 'NESC - ANSI C2 - National Electrical Safety Code' started by WodyM, May 6, 2008.

  1. WodyM New Member

    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
    WodyM, May 6, 2008
    #1

  2. Catcher13 New Member

    Wow! That's quite a pretty nasty rumor.:eek: If it is true it will certainly confuse the utility side of things even more. Where did you hear this?
    Catcher13, May 12, 2008
    #2

  3. acobb Well-Known Member

    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
    acobb, May 13, 2008
    #3

  4. Catcher13 New Member

    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.
    Catcher13, May 13, 2008
    #4

  5. apowerengr New Member

    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?
    apowerengr, Aug 15, 2008
    #5

  6. acobb Well-Known Member

    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
    acobb, Aug 15, 2008
    #6

  7. stevenal Well-Known Member

    Too different subjects seem to be getting confused here. The TIA 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.

    Attached Files:

    stevenal, Feb 12, 2009
    #7

  8. acobb Well-Known Member

    Stevenal,

    Be sure to check you private messages
    acobb, Feb 14, 2009
    #8

  9. Electric John New Member

    Electric John, Mar 3, 2009
    #9

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