The corrections log, and why this page exists at all
Code commentary written by someone without a license has to be checkable. This is the mechanism.
The policy
Fixed, dated, recorded. Not silently edited.
For this site specifically that is not a nicety. If you cannot audit the corrections, you have no way to judge whether the commentary is any good.
Every claim points at a section
That is the design. No statement here asks to be believed on authority, because there is no authority behind it. Each one names the section it came from so you can check it in about a minute.
If a claim here has no section attached to it, that itself is a defect worth reporting.
The log
Dated entries appear here as corrections are made. Nothing is quietly edited.
| Date | Page | What was wrong | What it says now |
|---|---|---|---|
| 2026-08-23 | Grounding changes | Said equipment grounding conductors are in Part IV of Article 250, starting at 250.110. Also attributed two performance sentences to 250.4(A)(3) and 250.4(A)(4), and stated the 250.97 bonding requirement without its exception. | Part VI, starting at 250.109. Both performance sentences are under 250.4(A)(5). The 250.97 exception, which permits ordinary locknuts and shouldered fittings where no oversized or concentric knockouts are encountered, is now on the page. |
| 2026-08-23 | Remote breakers, 240.6(D) | Said the 2026 edition added the section. | The 2026 text carries the revision marker on it, not the new-material marker, so it predates this cycle. |
| 2026-08-23 | Renumbering | Listed the Article 220 to Article 120 move and stopped there. | Five further moves are listed, each checked in the book: 312.6 to 312.9, 300.4 to 300.6, 450.3 to 450.5, 215.2 to 215.4, and 250.24(A)(5) to 250.24(B). Two of those old numbers are now occupied by different rules. |
| 2026-08-24 | Renumbering, and a correction to a correction | The 2026-08-23 entry above says five further moves were each checked in the book, and lists 312.6 to 312.9 and 215.2 to 215.4 among them. | Two of those five were not checked as thoroughly as that sentence claims. 312.6 is occupied rather than empty, which we had backwards. And we could not confirm 215.2 to 215.4 in the book at all, so it is now marked as unread on the page rather than stated as fact. The other three moves stand. |
| 2026-08-24 | Book checker, article provenance | Said Article 206 was lifted out of Section 300.26, and listed terminal block fill as a 2026 change. | Article 206 was assembled from the Class 1 non-power-limited content of Articles 724 and 725. Terminal block fill arrived in the 2023 edition, so it does not belong on a page about what changed since 2023. |
| 2026-08-24 | Drill, Article 404 | Taught that Article 404 is switches and 406 is receptacles, which is the distinction the 2026 edition abolished. | Device-type switches, including snap switches and dimmers, moved to Article 406, which was retitled Wiring Devices. Article 404 keeps general-use, motor-circuit, isolating and pullout switches and molded-case switches. The drill now has an item for each side. |
| 2026-08-24 | Renumbering, and eleven pages besides | Said Chapter 2 became Chapter 1 and everything downstream shifted. Twelve pages carried a version of that sentence. | No chapter was renumbered in the 2026 edition. Articles moved between chapters, and Chapter 1 went from two articles to four. Caught by reading the 2026 table of contents against the 2023 one. |
| 2026-08-24 | New articles | Listed eleven article numbers as new in 2026: 245, 305, 369, 371, 393, 425, 495, 512, 646, 724 and 726. | All eleven were already in the 2023 edition, which is what a new-article list looks like when it is built against a book two cycles old. Each number was checked against the 2023 structure. |
| 2026-08-24 | Reused numbers | Listed three article numbers that kept their number and changed subject. | There are four. Article 720 is now General Requirements for Limited-Energy System Wiring Methods and Materials, having been Circuits and Equipment Operating at Less Than 50 Volts. Found while checking the limited-energy set article by article. |
These were found by reading the 2026 text against pages that were already published, not by a reader reporting them.