Start with the box type and raceway type, then use the adopted code to find the exact fill, securing and support sections for that installation. TDLR states that the adopted amendments “adopt the 2026 National Electrical Code as the state electrical code, with a limited exception pertaining to ground-fault circuit interrupter requirements for certain outdoor outlets,” with an effective date of September 1, 2026. NCCER’s 2026 box module covers selecting, sizing and installing boxes, box-fill requirements and junction-box sizing.
NCCER’s Wireways, Raceways, and Fittings module covers selection and installation based on NEC requirements.
Checked against TDLR 2026 NEC adoption notice and NCCER Electrical curriculum on October 17, 2026.
Free tool: guided lookup worksheet
Work through the three lookups in order. For each one the sheet shows your next step, and it ends with a supervisor check.
Study options
Texas Journeyman Electrician Exam Practice Pack (PSI, NEC 2026)
Code-book navigation aids and a find-these-first list of the code-book locations its questions reference most often, so you can practice finding the article, section or table in your own 2026 NEC. US$39, one payment.
Texas Journeyman Electrician Exam Prep Book (2026 NEC)
Topic questions with worked answers and two full mock exams. Use the chapter exercises to practice finding each rule before you move to the mocks.
Code references for lookup practice
Compare the exact title and edition shown in each listing.
Mike Holt's Illustrated Guide to Understanding the NEC, Volume 1, 2026 NEC
The listing describes an illustrated guide to Articles 90 through 480 based on the 2026 NEC.
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Illustrated Guide to the National Electrical Code, 10th Edition
The listing states that this edition covers the 2026 NEC.
Prices and stock change on Amazon, so check the listing before you buy.
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