Really comprehensive 2023 NEC Vol 1 with excellent coverage of the current code cycle content. The AFCI expansion, GFCI updates, and emergency disconnect requirements are particularly well handled. Giving four rather than five stars because a few of the 2023 commercial installation changes could be covered with more depth. The foundational content and the residential 2023 changes are five stars. The commercial 2023 update coverage is slightly thinner. Overall the most current and accessible NEC Vol 1 available for the 2023 cycle.

The wire sizing and ampacity content in this 2023 Vol 1 edition reflects the current ampacity tables and the current temperature correction and adjustment factors. Wire sizing is a fundamental daily professional calculation and getting it right under the current code requires current tables and current methodology. This guide provides both in an accessible illustrated format. My conductor sizing is consistently correct and defensible under the 2023 code because this guide gave me the current tables and the clear methodology for applying them. The organization of the ampacity content is more accessible than the codebook itself.

I work as an electrical inspector and my inspection work is governed by the 2023 code cycle. Having a guide that reflects the current code accurately — rather than one that reflects an older cycle and must be mentally updated — is a practical necessity for inspection work. This 2023 Vol 1 edition is the guide I keep at my desk for the foundational NEC content. The accuracy of its representation of current code requirements is something I verify constantly through inspection practice and the guide has been reliable every time I have checked it.

I run a residential electrical contracting business and the 2023 code cycle brought changes to residential installation requirements that affect our work on every project. The expanded AFCI requirements, the GFCI protection changes, and the updated receptacle requirements all had to be assimilated by my whole crew. I bought copies of this 2023 edition for every electrician in my company. The clear illustrated presentation of the 2023 changes made the transition to the new code cycle efficient for my whole team. Our installations reflected the current code correctly from the moment the cycle was adopted because of this guide.

Decent 2023 NEC guide with accurate content and good illustrations. For journeyman exam preparation under the current code cycle this is useful. Three stars because for master exam preparation the depth of some sections is insufficient — the commercial and advanced content needed more development for the depth master exams test. Good for journeyman preparation under the current cycle. Needs supplementing for master level depth.

My electrical contractor licensing exam was administered under the 2023 code cycle and tested my knowledge at a depth that required genuine understanding of the current code — not just familiarity with general electrical principles. This 2023 edition provided the current-cycle preparation I needed. The systematic coverage of the 2023 changes, integrated with the foundational content that contractor exams also test, gave me complete preparation. I passed my contractor exam on the first attempt and the currency of this guide was essential to that outcome.

Really comprehensive 2023 NEC Vol 1 with excellent coverage of the current code cycle content. The AFCI expansion, GFCI updates, and emergency disconnect requirements are particularly well handled. Giving four rather than five stars because a few of the 2023 commercial installation changes could be covered with more depth. The foundational content and the residential 2023 changes are five stars. The commercial 2023 update coverage is slightly thinner. Overall the most current and accessible NEC Vol 1 available for the 2023 cycle.

My state transitioned to the 2023 NEC code cycle right as I began preparing for my journeyman exam, which meant I needed a study resource that reflected the current code rather than a previous cycle. This 2023 edition of Vol 1 was exactly that resource. The way it integrates the 2023 code changes into the foundational content — presenting the current requirements as the baseline rather than as amendments to older requirements — meant I studied the code as it currently exists rather than having to reconcile an older guide with the current code. I passed my exam on the first attempt and the currency of this guide was central to that outcome.

The emergency and exit lighting requirements that appear in this Vol 1 2023 edition are content that commercial electricians encounter on every commercial construction project and that many electricians have not studied systematically. The 2023 code cycle requirements for emergency lighting, exit sign illumination, and branch circuit protection for emergency loads are covered clearly with illustrations that show compliant installations. My commercial emergency lighting installations reflect current code consistently because this guide covered those requirements clearly and accurately.

The grounding and bonding chapter in this 2023 Vol 1 edition is the section I return to most frequently on the job. The updates to bonding requirements in the 2023 code cycle are explained with the same clarity as the established requirements — the new requirements are not treated as exceptions but as natural extensions of the underlying grounding principles. The illustrations show not just what the 2023 code requires but why each requirement exists and how it fits into the overall grounding system design. That explanatory approach is what builds genuine code understanding rather than rule memorization.

Decent 2023 NEC guide with accurate content and good illustrations throughout. For journeyman exam preparation in states that have adopted the 2023 code cycle this is a useful resource. Three stars because for master exam preparation the depth of some sections is insufficient — the commercial and industrial content especially needed more development for the level of depth master exams test. Good for journeyman preparation. Needs supplementing for master level.

The arc fault circuit interrupter expansion in the 2023 code cycle is the single most significant change to residential electrical installations in recent code cycles and also the most commonly tested topic on current journeyman exams. This guide's treatment of the expanded AFCI requirements — with clear illustrations of which circuits in which locations now require protection, which switching configurations satisfy the requirement, and which exceptions apply — is the most thorough treatment of this topic I have found in any NEC guide. That thorough coverage of the highest-frequency exam topic was the most valuable part of my exam preparation.

Good 2023 edition that reflects the current code cycle accurately. The illustrations are the standout feature — code concepts that are ambiguous in text become clear visually. Four stars because the index organization could be improved for quick field reference when you need to find a specific 2023 requirement quickly during a job. The study resource quality is five stars. The field reference usability is four stars. For exam prep this is the best available for the current cycle.

Good 2023 edition that reflects the current code cycle accurately. The illustrations are the standout feature — code concepts that are ambiguous in text become clear visually. Four stars because the index organization could be improved for quick field reference when you need to find a specific 2023 requirement quickly during a job. The study resource quality is five stars. The field reference usability is four stars. For exam prep this is the best available for the current cycle.

I am a master electrician who teaches NEC code courses for continuing education and I transitioned to this 2023 edition as my primary course text when the new code cycle was adopted in my state. The integration of the 2023 code changes into the foundational content — rather than treating them as addenda — is what distinguishes this edition from previous ones. The illustrated explanations of the new AFCI requirements, the updated load calculation methodology, and the revised service equipment requirements are the strongest sections. My students pass at higher rates when the content reflects the code they are actually being examined on.

Decent 2023 NEC guide with accurate content and good illustrations throughout. For journeyman exam preparation in states that have adopted the 2023 code cycle this is a useful resource. Three stars because for master exam preparation the depth of some sections is insufficient — the commercial and industrial content especially needed more development for the level of depth master exams test. Good for journeyman preparation. Needs supplementing for master level.

The 2023 code cycle expanded arc fault circuit interrupter protection requirements significantly and the expansion is the change my apprentices ask about most frequently. This guide's coverage of the 2023 AFCI requirements is the clearest and most complete I have found. The specific rooms and circuit types that now require protection, the combination AFCI/GFCI device requirements, and the exceptions that apply are all illustrated in a way that makes the requirements immediately applicable to field work. As a supervising electrician who has to explain these requirements to my crew, having a clear reference for the current AFCI requirements is invaluable.

My electrical apprenticeship program adopted this 2023 edition as required reading when our jurisdiction transitioned to the new code cycle. The apprentices in the first cohort to use the 2023 edition demonstrated better code application on their practical assessments and higher pass rates on their exams than any previous cohort. Studying the current code from a current, well-illustrated guide produces better-prepared electricians than studying an older code and mentally updating it. The measurable improvement in our program's outcomes validated the decision to require this edition.

Good 2023 edition that reflects the current code cycle accurately. The illustrations are the standout feature — code concepts that are ambiguous in text become clear visually. Four stars because the index organization could be improved for quick field reference when you need to find a specific 2023 requirement quickly during a job. The study resource quality is five stars. The field reference usability is four stars. For exam prep this is the best available for the current cycle.

Really comprehensive 2023 NEC guide with excellent coverage of the current code cycle content. The AFCI expansion and GFCI updates are particularly well handled. Giving four rather than five stars because a few of the 2023 code cycle changes — particularly some of the updates to commercial installation requirements — could be covered with more depth than they receive here. The foundational content and the residential 2023 changes are five stars. The commercial update coverage is slightly thinner. Overall the most current and accessible NEC Vol 1 guide available.

My electrical apprenticeship cohort of eight people all used this 2023 edition for our journeyman exam preparation. Seven of the eight passed on the first attempt. The one who did not passed on the second attempt. That pass rate — 87.5% first attempt and 100% second attempt — across a group of candidates with different experience levels and different specialty backgrounds reflects a guide that consistently prepares candidates for the actual exam. The 2023 currency of the content was specifically valuable because our state had recently adopted the new code cycle and the exam reflected it.

Really good 2023 Vol 1 that covers the current code cycle thoroughly. The grounding and bonding chapter and the service entrance chapters are the strongest. Four stars because the surge protective device and EV charging content — both new-cycle requirements — are covered adequately but not comprehensively given their growing prevalence. The 2023 code brought significant requirements in both areas and this guide covers them clearly but electricians specializing in those areas may want more depth.

Solid 2023 NEC guide with accurate current content and strong illustrative quality. The AFCI and GFCI 2023 updates are the sections I reference most. Four stars because I wished for more explicit marking of which content reflects 2023 changes versus which reflects established requirements. Knowing at a glance which sections cover new-cycle content would make review of the 2023 changes more efficient. Good guide with that organizational note that would make it even more useful.

I am an electrical instructor who transitioned my entire course to the 2023 edition of this guide when our state adopted the new code cycle. The decision was straightforward — students preparing for exams that reflect the 2023 code need a study resource that reflects the 2023 code. The quality of the illustrations, the clarity of the explanations, and the accuracy of the 2023 content make this the most effective classroom resource for the current cycle. My students' exam pass rates on the current cycle content are the highest I have seen in my teaching career.

The grounding and bonding chapter in this 2023 Vol 1 edition is the section I return to most frequently on the job. The updates to bonding requirements in the 2023 code cycle are explained with the same clarity as the established requirements — the new requirements are not treated as exceptions but as natural extensions of the underlying grounding principles. The illustrations show not just what the 2023 code requires but why each requirement exists and how it fits into the overall grounding system design. That explanatory approach is what builds genuine code understanding rather than rule memorization.