What Does TX-ME Stand For?

What Does TX-ME Actually Stand For?

TX-ME stands for the Texas Master Electrician License Exam - the state licensing test administered under the authority of the Texas Department of Licensing and Regulation (TDLR) and delivered through PSI testing centers. If you've landed on this page searching for what those three letters mean, the short answer is simple: it's the exam a Journeyman Electrician in Texas must pass, alongside meeting experience requirements, to become licensed as a Master Electrician.

This is not a generic industry certification you can add optionally to a resume. It's a state-controlled credential tied directly to legal authority to supervise electrical work, pull permits under your own license, and eventually operate as an Electrical Contractor in Texas. Because the acronym overlaps with other unrelated credentials in other industries, it's worth being precise: on this site, and in this article, TX-ME refers exclusively to the Texas Master Electrician License Exam and nothing else.

Who Runs the TX-ME Exam?

The Texas Department of Licensing and Regulation (TDLR) is the state agency that licenses individual electricians in Texas, including the Master Electrician credential. TDLR does not deliver the exam itself - that role belongs to PSI, the third-party testing vendor that operates computer-based testing centers where the TX-ME is administered in English and Spanish.

Before you can sit for the exam, TDLR must approve your application. Once approved, licensing requirements - including passing both exam portions - must be completed within one year after TDLR receives your application. Miss that window and you'll need to restart the approval process, so timing your study around your approval date matters as much as studying the content itself.

For a full breakdown of who qualifies to apply in the first place, see our TX-ME Requirements 2026: Eligibility, Prerequisites & How to Qualify guide.

Exam Format: Two Timed Portions, 108 Questions

The TX-ME is really two exams in one sitting. Each portion is timed separately, scored separately, and must be passed separately - there is no averaging between them.

• NEC Knowledge portion: 75 administered questions (70 scored, 5 unscored), 150 minutes.
• Calculations portion: 33 administered questions (30 scored, 3 unscored), 170 minutes.

That's 108 total administered questions across 320 minutes of combined testing time. Unused time from one portion cannot transfer to the other, so pacing within each section is its own challenge - running long on NEC Knowledge won't buy you extra minutes for Calculations.

Both portions are open-book, computer-based, and multiple-choice. That "open-book" label is misleading if you assume it means easy - you're allowed only an approved softbound NEC, not a Handbook, loose-leaf, spiral, or ring-bound copy, and no added papers. For the exact scoring mechanics, read TX-ME Passing Score 2026: Exactly What You Need to Pass.

The 20 Domains Behind the Two Portions

The acronym TX-ME covers a lot of ground once you look under the hood. The exam blueprint is organized into 20 named subject areas - 10 for NEC Knowledge and 10 for Calculations - and several domain names repeat across both portions because the same electrical topics get tested twice: once as knowledge, once as math.

Notice that Services is the single largest domain in both portions (11 of 70 on the knowledge side, tied with Branch Circuit Conductors, and 8 of 30 on the calculations side). Motors and Generators also carries unusually heavy weight on Calculations (6 of 30) relative to its knowledge-side weight. A candidate who understands what TX-ME stands for but skips this domain breakdown is studying blind. For the complete walkthrough of every domain with study priorities, see TX-ME Exam Domains 2026: Complete Guide to All 20 Content Areas.

Eligibility: Hours, Journeyman Time, and Approval

Before TDLR will approve you to sit for the TX-ME, you need to document:

• 12,000 supervised on-the-job hours performed under a Texas-licensed Master Electrician.
• A Journeyman Electrician license held for at least two years. A Journeyman Industrial license does not satisfy this requirement - it must be the standard Journeyman Electrician license.
• Verification from your supervising master(s) confirming the hours were legitimately earned under proper supervision.

Once TDLR receives your application and grants approval, the clock starts: you have one year to complete all licensing requirements, including passing both exam portions. That deadline is a good reason to schedule your PSI appointment early rather than treating "someday" as a study plan.

Fees, References, and Test-Day Rules

Two separate fee streams apply to the TX-ME process:

• TDLR license application fee: $45
• PSI examination fee: $78 to take both portions, or $78 to retake one or both portions

These fees are for the licensing and testing process itself, separate from any prep materials or courses you invest in. If you're mapping out the full financial picture before you commit, our TX-ME Certification Cost 2026: Complete Pricing Breakdown article lays out every line item.

Reference material rules are strict and specific:

• Only an approved softbound NEC is permitted - no Handbooks, loose-leaf, spiral, or ring-bound editions, and no inserted papers.
• Notes, highlighting, and underlining made before test day are allowed.
• Tabs must be permanent, publisher-manufactured or publisher-supplied NEC tabs - writing in your reference during the actual test is prohibited.
• A silent, battery-operated, nonprinting, nonprogrammable calculator without alphabetic capability is permitted for the Calculations portion.

Testing is computer-based and available in English or Spanish at PSI centers. For scheduling logistics and how the one-year approval window interacts with test dates, check TX-ME Exam Dates 2026: Testing Windows, Deadlines & Scheduling.

How the Name Connects to Real Pass Rates

Understanding what TX-ME stands for also means understanding how tough it actually is. TDLR's official FY2025 results show a 22.21% pass rate for Master NEC (771 passes out of 3,472 completed examinations) and a 19.08% pass rate for Master Calculations (753 passes out of 3,946 completed examinations). These are historical, portion-level figures - they predate the 2026 code transition and don't represent first-attempt or combined-candidate outcomes, so use them as directional context rather than a precise prediction of your own result.

Those numbers also explain why the exam is administered in two separately timed, separately passed portions rather than one blended score: candidates can be strong in code lookups but weak in load calculations, or vice versa, and the format is built to surface that gap rather than hide it. For a deeper dive into why the numbers land where they do, read How Hard Is the TX-ME Exam? Complete Difficulty Guide 2026 or TX-ME Pass Rate 2026: What the Data Shows.

After You Pass: License, Renewal, and CE

Passing both TX-ME portions doesn't end the paperwork. The individual Master Electrician license is valid for one year and renews for $45. Each renewal cycle requires four TDLR-approved continuing education hours covering:

• The National Electrical Code (NEC)
• Texas electrical law and rules
• NFPA 70E electrical safety

It's also worth noting that your individual Master Electrician license is distinct from the separate Electrical Contractor business license - passing the TX-ME and holding the individual license doesn't automatically authorize you to operate as a licensed contracting business. That's a separate application track through TDLR.

Turning the Acronym Into a Study Plan

Once you know that TX-ME means the Texas Master Electrician License Exam - and that it's really two graded portions covering 20 named domains - the smartest prep sequence follows the scored-item weighting rather than a generic chapter-by-chapter read-through.

This kind of weighted scheduling - spending more hours on Services and Branch Circuit Conductors than on Renewable Energy Technologies simply because the point values are higher - is a far better use of limited study time than an evenly-split calendar. For a structured six-to-eight week version of this plan with daily targets, see TX-ME Study Guide 2026: How to Pass on Your First Attempt. And once you're within a week of test day, a condensed reference like the TX-ME Cheat Sheet 2026: One-Page Review of Must-Know Facts can help you do a final pass on formulas and article numbers.

Practicing under realistic timed conditions matters as much as content review. Working through timed, domain-tagged questions on our TX-ME practice test platform lets you see exactly where your NEC Knowledge pacing breaks down before it costs you on test day, and repeating full-length simulations on the practice site builds the stamina needed for 320 combined minutes of testing.

Frequently Asked Questions