March 19, 2026
March 19, 2026
It’s that time again. Time to open up the newest edition of the NEC and begin to wrap our minds around all of the changes that accompany a new code cycle. The 2026 NEC is packed with changes that will fundamentally affect how we design, install, and inspect electrical systems. While, in my opinion, there is nothing earth-shattering or complete industry-changing, there are some significant changes and these ten deserve your attention.
Here's a change that's going to impact nearly every residential job you touch. Section 240.70(A) now mandates that service disconnects for one- and two-family dwelling units must be located outside the dwelling—either within sight of it or directly on the building itself.
Over the past few code cycles, there has been a continued effort to improve electrical safety for first responders. This change is consistent with that objective giving first responders and utility workers a way to disconnect power without entering a potentially dangerous structure. This means either the panel is going to have to be located outside, or a fused disconnect or main breaker will have to be located outside and then supply a panel located indoors. This also means grounding and bonding for the service will be located outside. Welcome to the new normal for residential work.
In general, NFPA 70E is recognized as the standard for electrical safety, but the NEC also includes requirements that pertain to electrical safety. An example of this is Section 110.16, which has been revised and expanded to require significantly more information on service and feeder equipment labels.
Yes, arc flash incidents are among the most severe electrical hazards workers face, and the purpose of the NEC is … the practical safeguarding of persons and property from hazards arising from the use of electricity. However, should arc flash PPE selection requirements be included in the NEC? The onus of worker safety has rested squarely on contractors for their own employees for decades, but this requirement now expands that responsibility to any worker who services this equipment. Personally, I am not sure how I feel about this one. The importance of worker safety is undeniable but so too is the potential liability. Welp, no one asked me and it says what it says. Work safe out there folks.
If you've spent years flipping to Article 220 for branch-circuit, feeder, and service load calculations, prepare to retrain your muscle memory. This entire section has been relocated to Article 120 in the 2026 edition.
While the actual calculation methods remain largely the same, this reorganization is part of a broader effort to make the Code more logical and user-friendly. Article 120 now serves as a consolidated location for all, (or at least most), things related to load calculations. Dig into the 2026 changes and one word keeps popping up: usability. The NEC is clearly trying to be more user-friendly for everyday electricians, and honestly, I think that is something we can all appreciate.
After decades of applying 3 VA per square foot to calculate the general lighting load for dwelling units, the unit load has decreased from 3 VA per square foot to 2 VA per square foot in Section 120.41.
This change reflects more realistic power consumption patterns in modern homes and recognizes improvements in energy efficiency (let’s just say it… LED’s). It means slightly smaller service sizes may be adequate for many residential applications, or at least this change may make room for adding those attached garages into the general lighting load calculation, or electric vehicle charging, or whatever other new fancy technology we may encounter.
For decades, Chapter 8 operated independently from the rest of the Code, covering communications systems in its own isolated world. That's changed. Chapters 1 through 7 now apply to Chapter 8, and vice versa.
This integration means you'll need to consider general NEC requirements when working with communications systems, and communications provisions may now apply to other installations. It's a significant shift that creates more consistency across the Code. Several requirements pertaining to communications wiring methods, cables, etc. were consolidated as a result of this change.
While not a change you need to implement today, the 2026 NEC includes a new annex that outlines a completely new structure for the Code coming in the 2029 edition. This is your advance warning that a major reorganization is on the horizon.
The NEC has grown organically over more than a century, and the result is sometimes inconsistent organization and redundancy. The announced restructuring aims to make the Code more logical, easier to navigate, and internationally aligned. Hey embrace the change, it may be tough at first but then again there is a proposed chapter titled Circular Raceways… seems pretty straight forward to me.
Article 235, which covered branch circuits, feeders, and services over 1000 volts AC and 1500 volts DC, has been deleted. But the information didn't disappear—it's been reorganized into separate, more focused articles.
Article 265 now covers branch circuits, Article 266 handles feeders, Article 268 addresses services, and the new Article 267 covers outside branch circuits and feeders for medium-voltage systems. If you work with medium-voltage installations, this reorganization creates a clearer, more parallel structure to the requirements for lower-voltage systems. Each aspect of medium-voltage work now has its own dedicated article, making it easier to find what you need.
Continuing the theme of better organization for medium-voltage work, Part X of Article 250 has been extracted and relocated to a new Article 270. This means grounding and bonding for medium-voltage systems now has its own dedicated article separate from lower-voltage requirements.
The result is a more logical, parallel structure: medium-voltage systems now follow the same organizational pattern as systems under 1000 volts AC and 1500 volts DC, with separate articles for branch circuits, feeders, outside branch circuits and feeders, and grounding and bonding. It's another step toward making the Code more intuitive.
Here's a possible glimpse into the future. Section 210.24 now recognizes 16 AWG copper conductors and 14 AWG aluminum or copper-clad aluminum as suitable for 10-amp multi-outlet branch circuits.
This expands your options for certain applications, particularly in lighting and some specific loads in dwelling units where we may be able to use smaller, cheaper conductors and cable. Just remember that this applies specifically to 10-amp circuits—don't confuse this with standard 15 or 20-amp branch circuit requirements, which remain unchanged.
Section 230.80, which previously required emergency disconnects in single- and two-family dwelling units, has been deleted from the 2026 NEC. Before you celebrate fewer requirements, understand why: it's been eliminated because it's now unnecessary.
With the new requirement that service disconnects must be located outside (see change #1 above), a separate emergency disconnect serves no additional purpose. The outside service disconnect already provides the emergency shutoff capability. This is a perfect example of how one significant change can cascade through the Code, eliminating contradictions and redundancies.
The 2026 NEC represents both evolutionary improvements and some potentially revolutionary changes to how we approach electrical installations. From enhanced safety labeling to better organization of medium-voltage requirements, these changes reflect real-world lessons and ongoing efforts to make the Code more effective and user-friendly.
As you study these changes, remember that the goal isn't just to pass an exam or check boxes on an inspection—it's to install safer, more reliable electrical systems. Take the time to understand not just what changed, but why. That deeper understanding will make you a better electrician and help you adapt more quickly to future Code cycles.
Stay current, stay safe, and keep learning. The 2026 NEC is here, and it's time to make these changes part of your everyday practice.
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