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The Case for Removing the Electrical Sections from the IRC

jar546

CBO
Joined
Oct 16, 2009
Messages
12,718
Location
Not where I really want to be
For years, I’ve been against having an electrical section in the IRC, and my stance on this hasn’t changed. The NEC should be the sole standard for electrical work, just as it is referenced in the IBC. Florida takes the right approach by omitting an electrical section in its version of the IRC and instead directing all electrical work to the NEC. The problem with including an electrical section in the IRC is that it creates an unnecessary duplication of code, which not only adds complexity but also weakens the knowledge base of inspectors. Instead of requiring electrical inspectors to have a full understanding of NFPA 70, the IRC allows them to learn just a small portion of one book that only applies to single-family homes, duplexes, and townhomes. This creates a situation where an inspector is expected to enforce electrical standards without having comprehensive knowledge of the full code, which is problematic for both enforcement and training.

One of the biggest issues with the IRC’s electrical section is that it does not cover many essential systems. There is little to no guidance on generators, photovoltaic (PV) systems, or battery storage systems, all of which are becoming increasingly common in residential construction. Additionally, there are many residential accessory structures in agricultural areas that fall under the IRC but have more complex electrical systems, including three-phase power, multiple motors, and industrial-grade equipment. The limited scope of the IRC’s electrical section simply doesn’t account for these situations, which means an inspector trained only under the IRC may lack the necessary knowledge to properly evaluate these systems.

Another major flaw is the duplication of effort between the ICC and NFPA. Every cycle, the ICC has to rewrite sections of the IRC to align with the latest NEC, introducing unnecessary room for human error. The NEC is already the national standard for electrical work, and every licensed electrician is trained using the NEC—not the IRC. Yet inspectors are expected to learn electrical requirements from a separate, abridged version that doesn’t always match the NEC exactly. This creates inefficiencies in enforcement and makes it cumbersome for inspectors who are already familiar with the NEC to have to cross-reference unfamiliar sections of the IRC. It also makes it harder to ensure consistency between jurisdictions when some places enforce the NEC directly while others rely on an altered version within the IRC.

As a building official, I’ve seen firsthand the consequences of relying on residential-only electrical inspectors. Many of them lacked the depth of knowledge and experience needed to confidently enforce the code. In some cases, they missed critical violations that posed real hazards. On the other hand, I’ve also seen them nitpick issues that weren’t violations at all simply because they didn’t know the code well enough from practical experience. One instance that stood out to me was when I helped do some electrical work for a relative under a permit. At the time, I was already an experienced electrical inspector and building official, yet when the residential-only electrical inspector showed up to check my work, I was astonished at how little he knew. His questions and comments made it clear that he didn’t fully understand the NEC, and it was a frustrating experience to see someone in an enforcement role who wasn’t confident in their own knowledge. That type of situation should never happen, yet it does because the system allows for a limited, residential-only focus rather than requiring comprehensive NEC expertise.

The reality is that electrical inspections should require a full understanding of the NEC, not just a portion of it. If someone wants to be an electrical inspector, they should have to test under NFPA 70 and demonstrate their knowledge of the entire book. Residential-only electrical inspectors create an artificial divide in enforcement that doesn’t exist for other trades. We don’t train plumbing inspectors to only know a portion of the plumbing code, and we don’t train mechanical inspectors to only handle specific residential equipment. Electrical work should be treated the same way.

This perspective isn’t meant to undermine inspectors who currently work under the IRC’s electrical section. Rather, it’s a call to recognize that a more consistent and comprehensive approach is needed. The best way to improve electrical inspections is to require that all inspectors, regardless of whether they work in residential or commercial settings, be trained and certified under the full NEC. It’s time to rethink whether the electrical section in the IRC is truly serving the industry or if it’s an unnecessary layer of redundancy that should be eliminated altogether.
 
? Jar,

The IRC is prescriptive is it not?

And as thus the base language that I always see is that if it is not, as written in this code (IRC Adopted), then the book sends you over to the adopted IBC, which then sends you over to NFPA 70.

So unless the AHJ adopts the scoping wrong, I have always seen what you listed above...
There is little to no guidance on generators, photovoltaic (PV) systems, or battery storage systems, all of which are becoming increasingly common in residential construction. Additionally, there are many residential accessory structures in agricultural areas that fall under the IRC but have more complex electrical systems, including three-phase power, multiple motors, and industrial-grade equipment. The limited scope of the IRC’s electrical section simply doesn’t account for these situations, which means an inspector trained only under the IRC may lack the necessary knowledge to properly evaluate these systems.

The way it is suppose to work will require it to be permitted and inspected per the NFPA.

I have helped family and friends install (4) generators & (2) PV systems on residential properties and stand alone garages, under the IRC and every time it was pushed over to the IBC & then the NFPA.

So I would agree the IRC electrical is limited to a small basic set of parameters, but if not in Book "A", it sends you over to Book "B", which sends you over to Book "C".

Which I believe is the intent, so unless the AHJ that adopts the model codes out of the flow of the intent, there is a direct pathway from the IRC to NFPA 70 for all non included items and requirements.

I believe the issue is in the AHJ adoption, not the IRC's basic level all inclusive code intent itself.

In simple terms you can build what is in the IRC as written, if it is something else you are pushed to the IBC... an on...
 
The way Canada does it: the building code tells you when a device is required. The electrical code tells you how to install it.

Example: smoke alarm. The building code says how many you need and where they need to be installed. The electrical code tells you how to wire them.
 
? Jar,

The IRC is prescriptive is it not?

And as thus the base language that I always see is that if it is not, as written in this code (IRC Adopted), then the book sends you over to the adopted IBC, which then sends you over to NFPA 70.

So unless the AHJ adopts the scoping wrong, I have always seen what you listed above...


The way it is suppose to work will require it to be permitted and inspected per the NFPA.

I have helped family and friends install (4) generators & (2) PV systems on residential properties and stand alone garages, under the IRC and every time it was pushed over to the IBC & then the NFPA.

So I would agree the IRC electrical is limited to a small basic set of parameters, but if not in Book "A", it sends you over to Book "B", which sends you over to Book "C".

Which I believe is the intent, so unless the AHJ that adopts the model codes out of the flow of the intent, there is a direct pathway from the IRC to NFPA 70 for all non included items and requirements.

I believe the issue is in the AHJ adoption, not the IRC's basic level all inclusive code intent itself.

In simple terms you can build what is in the IRC as written, if it is something else you are pushed to the IBC... an on...
The issue is that those certified as residential inspectors are not certified on the NEC. It is solely the IRC. A fully NEC-certified electrical inspector needs to be the one to inspect those things, but that's not how it works in real life. This goes even deeper than that.
 
Most of what you say are training issues and has no bearing on where the user of the code gets their information...I am a big fan of the "I can buy one book and build a home or addition" methodology.... Just like engineering would go to the IBC, complicated electrical SHOULD go to the NEC as the IRC is not a complete replacement for all things electrical, just simple residential stuff....As TM says..I can't tell you how many electricians fail on smoke and co.....

The IBC tells you about egress lighting, the NEC doesn't....The IBC tells you when you need emergency or standby power, the NEC doesn't, it tells you how to wire it. Change of occupancy "upgrades" are in the IEBC not NEC. Permits and inspections are in the building code, not the NEC....Because it is more of a reference standard than a real code like the IBC or IRC.... :p
 
I agree with eliminating the electrical section of the NEC - try explaining to an electrician who does know the code and wants a code section that their install is a violation of E3703.2 of the IRC... you might as well be speaking Swahili.
 
I agree with eliminating the electrical section of the NEC - try explaining to an electrician who does know the code and wants a code section that their install is a violation of E3703.2 of the IRC... you might as well be speaking Swahili.
Because ICC is smarter than NFPA, they are nice enough to post the cross reference for the last several cycles...

1741011555865.png
 
Do you feel the same way about the plumbing and mechanical sections?
There's already at least half a dozen different plumbing codes adopted in the US, so what's one more? : - )

It is annoying when the IRC plumbing chapters and the IPC both cover the same topic but have different requirements. So I would certainly be in favor of eliminating all such discrepancies.

Cheers, Wayne
 
The issue is that those certified as residential inspectors are not certified on the NEC. It is solely the IRC. A fully NEC-certified electrical inspector needs to be the one to inspect those things, but that's not how it works in real life. This goes even deeper than that.
That's a AHJ issue, not a code book issue.

The AHJ can easily adopt an SOP that requires all electrical inspections, including those in the IRC to be inspected by "A Fully NEC-certified electrical inspector".

Sorry I get it, but that floats no boats IMO.
 
@jar546 Do you feel the same way about the plumbing and mechanical sections?
I never really thought about it to be honest. I have an extensive electrical background, so my focus was in that direction. I think it would eliminate a lot of issues with consistency if only the IPC or IMC was to be used and not those sections of the IRC.
 
I never really thought about it to be honest. I have an extensive electrical background, so my focus was in that direction. I think it would eliminate a lot of issues with consistency if only the IPC or IMC was to be used and not those sections of the IRC.
The NEC is much harder to make match the IRC and then when the code cycles don't match (on adoption) it gets harder...There is really not a good reason for I Codes not to match "in house" We have to use the NEC now so they don't get their choice of codes, I have to use the NEC to fail them....Now that I can cut and paste from NFPA Link, it is easier...
 
I never really thought about it to be honest. I have an extensive electrical background, so my focus was in that direction. I think it would eliminate a lot of issues with consistency if only the IPC or IMC was to be used and not those sections of the IRC.
The reason I ask is that CA does not adopt any of the IRC beyond Chapter 10. This is probably because CA uses the UPC and UMC as model codes for plumbing and mechanical. I think it makes it a lot cleaner.
 
It is important to understand that the IRC contains coverage for what is conventional and common in residential construction practice. While the IRC will provide all of the needed coverage for most residential construction, it might not address construction practices and systems that are atypical or rarely encountered in the industry. Sections such as R301.1.3, R301.2.2.1.1, R320.1, M1301.1, G2401.1 and P2601.1 refer to other codes either as an alternative to the provisions of the IRC or where the IRC lacks coverage for a particular type of structure, design, system, appliance or method of construction. In other words, the IRC is meant to be all inclusive for typical residential construction and it relies on other codes only where alternatives are desired or where the code lacks coverage for the uncommon aspect of residential construction.

A residential electrical permit should not cover generators, solar systems, EV charging stations and similar installations.
Use the IRC code book for how it was intended to be used.

As TBZ stated do not send a residential electrical inspector to inspect installations that are not addressed in the IRC electrical section.
IRC

ICC user note:
About this chapter: Chapter 34 contains broadly applicable requirements including provisions for the protection of the structural elements of a building, inspection of work, general installation and conductor identification. This chapter requires that all electrical system components be listed and labeled by an approved agency. The electrical provisions of this code are identical to the intent of the NEC provisions except that this code requires all electrical system components be listed and labeled. The code does not contain unique electrical requirements. A dwelling built to the code will have electrical systems identical to those required by the respective edition of the NEC. This code addresses only those electrical systems that are common to dwelling construction, and the NEC is referenced for any subject not addressed in the code.
 
I never really thought about it to be honest. I have an extensive electrical background, so my focus was in that direction. I think it would eliminate a lot of issues with consistency if only the IPC or IMC was to be used and not those sections of the IRC.
CA, does not use the Residential Electrical, Mechanical or Plumbing.
They adopted and modified the Uniform Mechanical and Plumbing codes, and the NEC.
The Chapters in the Residential code, refers to the above codes.
 
The ICC is a company. Like all companies, the ICC has a desire to expand...to increase it's reach. There's not a lot of room for that so the ICC writes entire new codes. It happened with advent of the IRC. It happened again with the addition of MEP to the IRC.

I am reminded of the first HP printers. Marvelous machines they were. Then scanners were added to the printers. Some time later FAX was sandwiched in. If they could have figured out how to make coffee we would all have one on the kitchen counter.

With the ICC, it's them fixing what ain't broke because they need something to do in a day.
 
North Carolina previously limited their residential code to ch. 1-11, all other chapters referenced the NC versions of the "commercial" mechanical, plumbing and electrical code. Those were all amended versions if the I-codes (and NEC) when I was there.

I believe that has now changed. So they did it, but moved on from it. Not sure why. When I was there, inspector certs were based on levels, (1,2,3) not perfectly tied to residential or commercial but if I remember correctly a level 1 (building, plumbing, mechanical, electrical, fire) could only do residential. After that, level 2 could do residential and commercial up to a certain size I think. Level 3 was anything.

Not sure if any changes have been made on the inspector side, but I liked it.
 
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