Can AHJ Enforce 2008 NEC?

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km5qd said:
Home runs per 2005 9 circuits, 3 neutrals, 1 ground all #12 in 3/4" emt.
Home runs per 2008 9 circuits, 9 grounded conductors 1 ground all #10 in 1" emt.
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You can still use MWBC in the '08, just have to use handle ties. Some people think that 2 pole, common trips is what's required, but you can just tie the handles.

Is this project at the college for dorms?
 
km5qd said:
No they are mostly Smart Classrooms. LOL would be alot of handle ties:) Each classroom has 15 to 17 circuits.
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Well, if you loose the battle, you can still win the war! That's only 5-6 handle ties per room for a 208Y.
 
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first of all I thought you were discussing a house and I would of not hesitated to do the TR receptacles but I would of questioned the AFCI on all circuits..now you are telling me it is a college addition and I would be talking to the inspector and the maintenance director or who ever accepted your proposal and I would be having this discussion with them..

as far as the derating and amount of conductors in you pipes ask yourself what is cheaper copper or steel..maybe easier to run 2 pipes..You must remember I also do the maintenance for the college as well..I do not use MWBC except where required..I believe the MWBC cause a higher level of potential for risk to both humans and equipment..

So my suggestion is a meeting with the powers you are answering to and work what is ever necessary..I believe from what I read you are biding engineered documents..so if the engineering was bid on 2005 and it was started well in advance of 2005 I believe you should be able to use 2005..
 
cschmid said:
I believe the MWBC cause a higher level of potential for risk to both humans and equipment..
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They're only dangerous to ignorant, unqualified humans, that you are needlessly trying to protect.
 
cschmid said:
I do not use MWBC except where required..
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Thats cool, I install enough to make up for the ones you did not install. :grin:

I use MWBCs absolutely every time I can, they are much more efficient in labor, materials and even electrical costs.
 
iwire said:
I use MWBCs absolutely every time I can, they are much more efficient in labor, materials and even electrical costs.
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Except that time we did the elevator, and the lighting circuits in the fabric place. ;) :D

Just havin' some fun. :)
 
I also use MWBC whenever possible, never had a bit of problems. I only run seperate grounded conductors when the prints and specs. call for it.
 
peter d said:
Except that time we did the elevator, and the lighting circuits in the fabric place. ;) :D

Just havin' some fun. :)
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I certainly rember the job, I don't remember the reason I (we) ran 3 neutrals but it worked out as the panel was only single phase. :smile:
 
iwire said:
I certainly rember the job, I don't remember the reason I (we) ran 3 neutrals but it worked iut as the panel was only single phase. :smile:
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Yeah, the funny part was "What, 3 separate neutrals???? I'm so disappointed! I thought this was Mr. MWBC himself." :D :D
 
lol I have figured out that if a man want to stir the pot all you have to do is get into the MWBC..the NEC pass codes with respect to human safety and not necessarily qualified human safty..it does not pass code on cost effective..

edited: you only delete yourself in the morning..wonder if it gets him out of any work..
 
cschmid said:
..I do not use MWBC except where required..I believe the MWBC cause a higher level of potential for risk to both humans and equipment..
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So you have four conductors entering your house, two hot and two grounded?
 
iwire said:
I use MWBCs absolutely every time I can, they are much more efficient in labor, materials and even electrical costs.
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Absolutely! It can halve or third the number of cables/conduits/knockouts you have to run/install/use in a panel, and free up neutral-bus terminals.

The last restaurant I wired had every 120v receptacle and lighting circuit run in MWBC's (GFCI recepts, not breakers.)
 
km5qd said:
We pulled a permit on a job in April of this year. The AHJ is telling me that they will be enforcing the 2008 Code which was Adopted by the State of Oklahoma on July 31. The 2005 NEC was the code at the time of the permit.

We have been working on the job prior to July 31st. Is there something in writing that states they can or cannot do this?:cool:
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You need to check out your Statewide Building Codes as in Virginia we are on the 2005 NEC however prior to May 1, 2008 we were in the 2002 NEC and once the May 1 , 2008 date came....the state allows the engineer or master electrician submitting plans to choose to design in the 2002 or 2005 NEC for one year...so once May 1, 2009 hits everything will be 2005 NEC.

Might be the same 1 year grace type period in your state...check it out.
 
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