Electrical 路 Free
NEC 2026 for Engineers and Electricians
The 2026 National Electrical Code (NFPA 70) for people who design and install: how the code is arranged, Article 110 working space and terminations, branch circuits and services, the new Article 120 load calculations for dwellings and commercial buildings, ampacity and voltage drop, overcurrent protection and taps, grounding and bonding, raceway and box fill, motors, transformers, hazardous locations, and PV, energy storage and EV charging.
Inside the course
From the lessons
How the NEC works: Article 90, Article 100, adoption and finding answers fast
Electrical 101
Branch circuits, feeders and services: Articles 210, 215 and 230
Ryan Jackson
Commercial and industrial feeder and service load calculations
Electrical 101
Overcurrent protection: Article 240, taps and short-circuit ratings
Dave Gordon
Bonding and equipment grounding conductors: the effective fault path
MikeHoltNEC
![Motor Branch Circuit Conductor Sizing [430.22(A)] (14min:30sec)](https://i.ytimg.com/vi/_7FmwY442dQ/mqdefault.jpg)
Motors, motor control and industrial machinery: Articles 430, 409 and 670
MikeHoltNEC
Lesson frames belong to the creators named in the Credits below and are shown from YouTube.
What you will learn
Find any rule in NFPA 70 by article and section; apply Article 110 approval, termination, fault-rating and working-space rules; size branch circuits, feeders and services with the 125 percent continuous rule; perform 2026 Article 120 load calculations for a dwelling and a commercial building; size conductors with temperature correction, adjustment and voltage drop; select OCPDs and apply the tap rules; size GECs, EGCs and bonding jumpers; calculate raceway and box fill; size motor and transformer circuits; classify hazardous locations; and apply the PV, ESS and EV rules and the main 2026 changes.
- Find any rule in NFPA 70 by chapter, article and section, and tell mandatory text from informational notes
- Apply Article 110: listing instructions, termination temperatures, fault ratings and working space
- Do a 2026 Article 120 load calculation for a dwelling and for a commercial building
- Size conductors with the 125 percent rule, temperature correction, adjustment and voltage drop
- Choose OCPDs, apply the next-size-up limits and size 10 ft and 25 ft feeder taps
- Size GECs, EGCs and bonding jumpers, and keep neutral and ground bonded at one point only
- Size motor, transformer and EV charger circuits, and calculate raceway and box fill
- Classify hazardous locations and apply the PV, energy storage and 2026 change rules
For you
Taking NEC 2026 for Engineers and Electricians from the United States
- Free in the United States, as everywhere, and self-paced: lessons, notes and the final assessment are open at any hour, so your time zone and shift pattern do not matter.
- The optional certificate for learners in the United States is a one-off US$28.99. What you get for it
- Plants across the Americas most often run Allen-Bradley, Siemens and Inductive Automation; each has its own free course to take next.
- See automation and engineering jobs in the United States, and what the industry looks like in Houston, Detroit and Chicago.
- EDWartens also has a regional site for the United States, for classroom training and local support: edwartens.com/us.
The course project 路 about 12 hours
Service and feeder design for a mixed-use commercial building to the 2026 NEC: load calculation, feeders, grounding and EV charging
Design the electrical service and feeders for a two-storey retail and office building with EV charging: build the load list and the Article 120 calculation, size the service, feeders, transformer and motor circuits with their OCPDs, EGCs and voltage drop, ground and bond the service and the separately derived system, and record the code checks. The sample pack shows each document for a building near Austin, Texas.
Sample document pack, 5 documents, filled in for the scenario
- Load listLoad list and Article 120 calculation: Ridgeview Commons
- ReportService and grounding calculation report
- Motor listMotor and HVAC equipment list
- Cable scheduleFeeder and branch-circuit schedule
- RegisterCode compliance checklist
Read inside the course and download as a workbook. The project is optional practice, marked when you submit it; the certificate needs only the modules and the final assessment.
Course content
15 modules 路 57 lessons 路 13h 35m
In order, at whatever pace suits you. Each module ends with a practice task that builds on the last.
- 01How the NEC works: Article 90, Article 100, adoption and finding answers fast3 lessons40m
- 02Article 110: approval, terminations, working space and arc-flash labels3 lessons1h 20m
- 03Branch circuits, feeders and services: Articles 210, 215 and 2304 lessons53m
- 04Dwelling load calculations under the new Article 1204 lessons55m
- 05Commercial and industrial feeder and service load calculations4 lessons45m
- 06Conductors and ampacity: Article 310, correction, adjustment and voltage drop5 lessons1h 28m
- 07Overcurrent protection: Article 240, taps and short-circuit ratings5 lessons1h 8m
- 08Grounding: system grounding, electrodes and the grounding electrode conductor3 lessons59m
Requirements
- Who it is for
- Intermediate. For electrical engineers, designers, electricians and apprentices, inspectors and estimators who work to the NEC or want to. You need basic circuit theory (Ohm's law, single-phase and three-phase power) and a calculator. No previous code study is needed.
- Software
- None required. A spreadsheet (LibreOffice Calc is free) helps with load calculations. Read NFPA 70 (2026) free in read-only form on the NFPA website; a printed or licensed copy is useful but optional. What to download, and how
- Hardware
- None.
Software you need
What to download, where from, what it costs and how to install it. Every link goes to the maker's own site, never a mirror.
Nothing to install
A calculator or spreadsheet is enough for every calculation, and NFPA 70 (2026) can be read free in read-only form on the NFPA website (nfpa.org) after a free registration.
Optional
Useful, not needed to finish the course.
- 01Free
LibreOffice
The Document Foundation
- Runs on
- Windows 10 or 11, macOS 11 or newer (Intel or Apple silicon), Linux
- Account
- None needed
- Size
- up to 1.5 GB of disk space on Windows
LibreOffice is free, open-source software under the Mozilla Public License 2.0, for any use including business. Calc is its spreadsheet.
Steps
- 1.Open the LibreOffice download page.
- 2.Check the page has picked your operating system, then select Download.
- 3.Run the installer (administrator rights are needed on Windows).
- 4.Start LibreOffice Calc for spreadsheet work.
- 5.Save as .xlsx if you need to share files with Excel users.
- Choose the latest main version unless your organisation asks for the older, more conservative release.
Official download pagelibreoffice.org
Checked against each maker's own page on 27 September 2026. Trial lengths and editions change; the maker's page is the final word.
NEC 2026 for Engineers and Electricians at a glance
NEC 2026 for Engineers and Electricians is a free, self-paced online course from EDWartens for electrical engineers, designers, electricians, apprentices, inspectors and estimators working to the NEC in the USA, the Philippines, Latin America and on US-specified projects worldwide. It has 15 modules and 13h 35m of video lessons by Ryan Jackson, Electrical 101, MikeHoltNEC and others, with written notes and worked problems, a practical project with a document pack and a 15-question final assessment (pass mark 60%). Learning is free with an account; an optional certificate with a public verification code is issued when you pass. Last updated 27 September 2026.
All course factsHide course facts
- Price
- Free, for good. No trial, no card. The only paid item is the optional certificate, a small one-off fee.
- Who it is for
- Electrical engineers, designers, electricians, apprentices, inspectors and estimators working to the NEC in the USA, the Philippines, Latin America and on US-specified projects worldwide
- Format
- 15 self-paced modules, 13h 35m of video, written notes, a practice task per module and one final assessment.
- Level
- Intermediate. Intermediate. For electrical engineers, designers, electricians and apprentices, inspectors and estimators who work to the NEC or want to. You need basic circuit theory (Ohm's law, single-phase and three-phase power) and a calculator. No previous code study is needed.
- Brand
- Vendor-neutral
- Software
- None required. A spreadsheet (LibreOffice Calc is free) helps with load calculations. Read NFPA 70 (2026) free in read-only form on the NFPA website; a printed or licensed copy is useful but optional.
- Hardware
- None.
- Certificate
- Optional EDWartens Certificate of Completion, verifiable by code. Not a vendor credential.
- Video lessons by
- Ryan Jackson, Electrical 101, MikeHoltNEC, Dave Gordon, Electrician U, Summit Electric Supply, Hazloc Directory (independent creators, credited below)
- Language
- English
- Last updated
- 27 September 2026
A shareable EDWartens certificate
Finish every module and pass the final assessment, and the optional EDWartens certificate is yours. It carries a unique verification code on a public page anyone can check, so it stands up when a recruiter looks it up. See it below.
The course itself stays free whether or not you ever buy one.
Stuck? Ask a practising engineer
A free course usually means a comment section and hope. This one does not. Every module has an Ask-your-trainer panel that reaches the same engineers who teach our paid programme: people who commission panels for a living, not moderators.
Pairs well with
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FreePLC programming 路 FreeSiemens TIA PortalFrom zero electrical knowledge to a working, simulated S7-1200 program, for nothing.
FreePLC programming 路 FreeSiemens TIA Portal in Three HoursThe first three hours of the Siemens TIA Portal course, cut to end on a win: what a PLC is, how it is wired, a project configured in TIA Portal, and your first ladder program running in simulation. Finish it in an evening or two, earn a certificate, and carry straight on into the full course.
FreePLC programming 路 FreeTIA Portal: Build a MachineOne machine, start to finish. Take a bottle filling line from a written specification and an I/O list to a structured S7-1200 program with a fill station, a capper, a reject sorter and an operator screen with alarms, then test it against a written record and archive it for hand-over. The lessons are the reference; the machine is yours, and it is what you submit.More free courses: Free electrical design and control panel courses
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Reviews here are written only by learners who have finished every module of NEC 2026 for Engineers and Electricians, and they are published exactly as written. Finish the course and yours will be the first.
Common questions
What is the NEC 2026 for Engineers and Electricians course?
It is a free-to-learn online course on the 2026 National Electrical Code (NFPA 70) for people who design, install or inspect electrical systems. It covers code navigation, Article 110, the new Article 120 load calculations, conductor and OCPD sizing, grounding and bonding, wiring methods, motors, transformers, hazardous locations, and PV, energy storage and EV charging, with worked problems in every module.
What are the main changes in the 2026 NEC?
The biggest change is that load calculations moved from Article 220 to a new Article 120, where the dwelling general lighting load dropped from 3 to 2 VA per square foot while branch circuits are still counted at 3 VA. Energy management systems moved to Article 130, systems over 1,000 V ac moved to Articles 265 to 270, control circuits moved to Article 206, Chapter 8 lost its independence, and GFCI, arc-flash labelling and service disconnect rules were revised.
Who is this NEC course for, and what do I need to know first?
It is for electrical engineers, designers, electricians and apprentices, inspectors and estimators who work to the NEC or are moving to NEC projects. You need basic circuit theory, including single-phase and three-phase power, and a calculator; no previous code study is needed.
Is the course free, and how long does it take?
Yes, every module, the notes, worked problems, practice tasks, the project and the final assessment are free to learn. It takes about 22 hours at your own pace, including about 13.6 hours of video, and the optional project takes about 12 hours more.
Do I need to buy the NEC code book?
No. NFPA lets anyone read NFPA 70 (2026) free in a read-only online viewer after a free registration, and the course notes explain each rule in their own words with worked numbers. A printed or licensed copy is useful on the job but optional for the course.
Will this course prepare me for a journeyman or master electrician exam?
It covers much of the NEC knowledge those exams test, including finding rules fast, load calculations, conductor and OCPD sizing, grounding and motors, so it is useful preparation. It is not tied to any state's exam, it gives no continuing-education credit, and electrician licensing is set by each state or country.
What certificate do I get, and how is it verified?
You get a verifiable certificate of completion when you finish the modules and pass the 15-question final at 60 percent. It carries a unique certificate number and a QR code that open a public verification page showing the course, the modules covered and your final score. It is not an NFPA credential or an electrician licence, and EDWartens is not affiliated with NFPA.
Is the NEC used outside the USA?
Yes. Most of the world wires to IEC 60364 (BS 7671 in the UK), which our Wiring Regulations course covers, but the Philippine Electrical Code Part 1 is based on the NEC, Mexico's NOM-001-SEDE follows its structure, and US-specified oil and gas, data centre and pharmaceutical projects, including many in the Gulf, name NFPA 70 in their specifications.
What you walk away with
Your certificate for NEC 2026 for Engineers and Electricians
Finish the course, pass the final, and this is the document with your name on it.
Verifiable by anyone
Adds to LinkedIn in one click
QR code on the certificate
Names what you can do
A permanent link
Earned, not attended
Learning is free. The certificate is optional.
Add it now and pay only when you have finished the course, or come back for it later. One-off, US$28.99, with a receipt.
Issued by EDWartens, the training division of Wartens, as a Certificate of Completion for this self-paced course. Sold by Wartens Ltd (England and Wales). It is not a vendor certification, a university award or a CPD-accredited activity, and it does not certify competence on live equipment. Delivered electronically; see the refund policy.
Credits
Who made the video lessons
The video lessons in this course were created by the people below, not by EDWartens. Every lesson streams from its creator's own YouTube channel; EDWartens neither hosts nor sells that footage, and the creators are not affiliated with EDWartens and do not endorse this course. What EDWartens wrote is the study plan, the notes, the practice tasks and the assessments.
- Ryan Jacksonthe 100 Days of the 2026 NEC Changes series used across the course (overview, 110.3, 110.16, 110.26, 120.5, 120.6, 120.13 and 120.41, 120.56, 120.57, 210.8, 210.22 and 210.23, 230.67, 230.70, 250.64, 250.122, 300.6, 310.14, 408.6, 409.23, 430.132, 625.41 and 690.4), the Article 100 bonding definitions and the raceway fill lesson
- Electrical 101Article 90, navigating the NEC, Article 110 general requirements, the dwelling service calculation, commercial load and service calculations, and motor load and branch-circuit protection examples
- MikeHoltNECthe ampacity table, voltage drop, coordination of OCPDs, grounding and bonding (250.4, grounding versus bonding, objectionable current, why grounding does not stop shock), motor conductor sizing, transformer grounding, hazardous classified locations, and the scope of Articles 690 and 706
- Dave Gordontemperature correction and adjustment factors, overcurrent, overload, short circuit and ground fault, 240.4 with Table 310.16, the round-up rule, transformer OCPDs under Table 450.3(B) and transformer secondary conductors
- Electrician Uthe difference between grounding, bonding and the neutral, and conduit fill worked examples
- Summit Electric Supplythe NEC hazardous location overview
- Hazloc Directoryclass and division against the zone classification system
If you are one of these creators and would like a lesson removed or credited differently, write to info@wartens.com.