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Electrical Code Inspection Illustrated — 2026 NEC Field Guide

A 105-plate interactive visual field guide to electrical inspection under the 2026 National Electrical Code — built around one clear illustration per plate, the way an inspector actually encounters an installation in the field. Covers the inspection process and the inspector's role, services and service equipment, grounding and bonding, panelboards and overcurrent protection, branch circuits and conductors, wiring methods and boxes, devices and required protection (GFCI/AFCI), special locations and equipment (pools, EVSE, generators, PV/ESS, hazardous locations), commercial and industrial topics (motors, transformers, emergency systems), and a full gallery of the violations found most often on a final walk-through. Every plate gets its own full-size figure slide so labeled diagrams, tables, and callouts stay legible. Chapter 1 (6 plates) is free to preview above — the remaining 99 plates across Chapters 2–10 plus 3 extended-detail appendix plates unlock with a one-time $4.99 purchase.

Full Guide — Chapters 2–10 + Appendix

Premium Content

Unlock all 210 slides across the remaining 99 plates: services, grounding/bonding, panelboards, branch circuits, wiring methods, devices/GFCI/AFCI, special locations, commercial/industrial topics, and a full gallery of common violations. Instant access after purchase — yours to keep, no expiration.

99 PlatesGFCI/AFCIGrounding/BondingCommon Violations

What This Guide Covers

Ten chapters follow the natural arc of a real inspection: the AHJ, permits, and listing/labeling fundamentals; service equipment from the drop or lateral through the disconnect; grounding and bonding from the electrode system through the intersystem bonding termination; panelboards, feeders, and overcurrent protection; branch-circuit conductor sizing, box fill, and voltage drop; wiring methods, raceways, and box support; receptacle and lighting device requirements including GFCI/AFCI protection; special locations and equipment from bathrooms and pools to EV chargers, generators, and PV/battery storage; commercial and industrial motor, transformer, and emergency-system topics; and a full final-walk-through chapter of frequently cited violations, a complete inspection checklist, and red-flag patterns that call for a closer look.

How to Navigate

Use the Prev / Next buttons at the bottom, or press the arrow keys on your keyboard. Click the ☰ menu button in the top-right to open the table of contents and jump to any plate. Each plate's text discussion is followed immediately by its own dedicated figure slide, so you can view the full illustration at a readable size before moving to the next plate.

Who This Is For

Electrical inspectors, plan reviewers, electricians, and apprentices who want a visual, plate-by-plate companion to the 2026 NEC inspection process; and PE/journeyman/master electrician exam candidates who want to build the field skill of connecting what is seen on an installation to the specific Code section that governs it.

Frequently Asked Questions

What does the Electrical Code Inspection Illustrated guide cover?

105 plates across 10 chapters plus 3 extended-detail appendix plates: the inspection process and inspector's role, services and service equipment, grounding and bonding, panelboards/feeders/overcurrent protection, branch circuits and conductors, wiring methods/raceways/boxes, devices/receptacles/required protection, special locations and equipment, commercial and industrial topics, and a full chapter of common violations and the final walk-through — all referenced to the 2026 NEC.

What is the difference between rough-in and final inspection?

Rough-in inspection happens while wiring is exposed, before walls and ceilings close — it checks wiring methods, box fill, support intervals, and framing protection. Final inspection happens after devices and fixtures are installed, confirming the finished system is complete, correctly terminated, labeled, and safe to energize, including GFCI/AFCI functional testing.

What are the most common violations found at a final inspection?

Missing or incomplete circuit directories, GFCI/AFCI protection gaps, blocked working space in front of panels, undersized conductors for their overcurrent device, missing bonding jumpers or an undersized grounding electrode conductor, and missing required field markings (arc-flash warning, available fault current) are among the most frequently cited findings.

What changed in the 2026 NEC that inspectors should know about?

Notable 2026 changes covered in this guide include the reduced dwelling general-lighting load (2 VA/ft² instead of 3), the required minimum 24-in. egress path at electrical equipment working space, mandatory surge protective devices at all new dwelling-unit services, expanded GFCI coverage for outdoor HVAC circuits up to 60A, and a required four-wire feeder (no exceptions) to sub-panels at separate structures.

Is this guide a substitute for the official NEC or a construction document?

No. This is an independent educational reference with simplified, conceptual illustrations for teaching purposes — not a reproduction of the Code text, not an engineering or construction document, and not affiliated with or endorsed by the NFPA. Always consult the official, currently adopted edition of the NEC and the Authority Having Jurisdiction before acting on any requirement.

Is this guide free?

Chapter 1 (6 plates covering the inspection process and inspector's role) is free to read in full. The remaining 99 plates across Chapters 2–10 plus 3 extended-detail appendix plates unlock with a one-time $4.99 purchase — no subscription, and access doesn't expire.

Disclaimer: This guide summarizes general electrical inspection concepts referencing the 2026 National Electrical Code® for educational purposes only. It does not reproduce NEC text and is not affiliated with, authorized by, sponsored by, or endorsed by the NFPA. Illustrations are simplified, conceptual teaching tools, not construction documents. Code adoption and amendments vary by jurisdiction — always verify every requirement against the official, currently adopted edition of the NEC and the Authority Having Jurisdiction before acting on it. Electrical work is hazardous and should be performed and inspected only by qualified, licensed persons.