Night Fox hits on the real problem with Table 9, and why I think it may easily go away in the 2011 NEC. The problem with Table 9 is that it doesn't tell you what to do if you don't meet the exact criteria of the Table. There was a change in 90.3 in the 2008 that tells us that Tables are only...
David: I agree... sort of. When you look at 517.26, it requires compliance with 517.26. While you are correct, these systems must still compl;y with ARticle 700.
Interestingly, there was an accepted proposal in the 2008 cycle to delete this section, and it nearly passed the comment stage...
Thaks for the welcome.
JGhrist: I moderate the forum that you linked to.
Don: Always a pleaseure "seeing" you. :)
alehman: We haven't adopted the 2008 yet (but we will in January). Article 708 really has people up in arms, mainly due to not knowing exactly which structures to apply it to.
I don't see how this can be done in a compliant manner. If a three pole switch is used, the n-g conection would have to be made upstream of the transfer switch, becasue the transfer switch can't be upstream of the service equipment (230.82). This all changes of course, if the transfer switch is...
Be rather careful when you call an elevator an "emergency" load. If you are governed by the IBC, Chapter 27 will call it a standby load, unless your building is greater than 4 stories...
Greetings all. I am not an engineer. I am an electrical inspector and seminar instructor on the NEC. I have also provided technical editing on many books on the NEC. I notice that this forum seems rather exclusives to engineers, so I thought I may ask...am I welcome here?
Thanks in advance!
