2029 Future PI: 230.90(A) Exception 5

[wwhitney]

Since I missed the 2026 deadline, hopefully I'll look back at this in 2.5 years.

Cheers, Wayne

230.90 Where Required
. . .
(A) Ungrounded Conductor.
Such protection shall be provided by an overcurrent device in series with each ungrounded service conductor that has a rating or setting not higher than the ampacity of the conductor. A set of fuses shall be considered all the fuses required to protect all the ungrounded conductors of a circuit. Single-pole circuit breakers, grouped in accordance with 230.71(B), shall be considered as one protective device.
. . .
Exception No. 5: Overload protection in accordance with the conductor ampacities of 310.12 service rating specified in 310.12(A) shall be permitted for single-phase dwelling services.


Statement of Problem and Substantiation for Public Input:

310.12(A) does not change conductor ampacities; rather it assigns a higher "service rating" to conductors for certain single phase dwelling services. So the exception needs to indicate that the overload protection may be sized in accordance with the "service rating" rather than the conductor ampacity.

 

[don_resqcapt19]

Given the plans for the 2029 NEC, not sure that there will be any time to deal with actual PIs

 

[shortcircuit2]

Is that the plan they have to reorganize all the articles?

 

[don_resqcapt19]

Is that the plan they have to reorganize all the articles?

yes a total rework of the code and it will have about 20 chapters and most of the existing stuff will have new chapter, article and section numbers..

 

[mtnelect]

yes a total rework of the code and it will have about 20 chapters and most of the existing stuff will have new chapter, article and section numbers..

I thought they would have converted the NEC to Volume 1 & Volume 2.

 

[letgomywago]

yes a total rework of the code and it will have about 20 chapters and most of the existing stuff will have new chapter, article and section numbers..

Good

 

[brantmacga]

yes a total rework of the code and it will have about 20 chapters and most of the existing stuff will have new chapter, article and section numbers..

Whew. Looks like I picked the perfect time to exit the electrical biz.

 

[jaggedben]

It's going to be a disaster.

 

[mtnelect]

Whew. Looks like I picked the perfect time to exit the electrical biz.

I got one foot out the door already !

 

[mtnelect]

yes a total rework of the code and it will have about 20 chapters and most of the existing stuff will have new chapter, article and section numbers..

Was this my fault ? Because I added two "PI's".

 

[brantmacga]

I got one foot out the door already !

I’ve got both. September was my official exit. Now I’m just working through my friends and family “hey when you get time…..” list, and then maybe I’ll finally be done.

 

[AC\DC]

You doing your lighting store?

 

[brantmacga]

You doing your lighting store?

no, not yet. I'm getting my feet wet in another segment right now that will all circle back to that.

 

[Eddie702]

Just did my NEC code update and wondering if I will renew my license again in 28'. I will be 75 by then If I am still around but probably not

I just hope whatever they do the print does not get any smaller.

 

[readydave8]

just hope whatever they do the print does not get any smaller.

Or your arms shorter?