Texas Electrician Practice Test | 2025

This guide gives you a Texas-focused practice test experience. You’ll see what PSI actually tests, realistic sample questions with NEC references, how retakes and fees work, and exactly what to bring on exam day—without fluff. Where policies vary, we cite the Texas Department of Licensing and Regulation (TDLR) and PSI so you can verify quickly.

Eligibility & Application Overview

In Texas, TDLR authorizes you to test and PSI delivers the computer-based exam. Typical sequence: apply to TDLR → receive exam eligibility → schedule with PSI → test at a PSI center or online proctored site. Always confirm the current steps and any required documents directly with TDLR and PSI because they control approval windows and scheduling rules (According to the TDLR Electricians Program and PSI Candidate site [1][2]).

Fees & Key Dates

Study Plan & Required References

Texas electrician exams are code-heavy. PSI lists the exact reference edition(s) and what you may bring into the test room in the Candidate Information Bulletin (CIB). Verify the current NEC edition and any Texas law/rule references in the CIB before you buy or mark up your book (According to TDLR and PSI [1][2]). Commonly referenced:

• National Electrical Code (NEC), current edition specified in the PSI CIB [2].
• Texas Electrical Safety and Licensing Act, Occupations Code Chapter 1305 (if included on your license exam) [3].
• TDLR Electricians rules (16 TAC Chapter 73) as referenced by the CIB [1].

• ☐ Obtain required codebooks/reference materials
• ☐ Follow a weekly study plan (4–6 weeks)
• ☐ Complete timed practice exams

Targeted practice by license type:

• Texas Journeyman Electrician Practice Test
• Texas Master Electrician Practice Test
• Texas Residential Wireman Practice Test
• Texas Maintenance Electrician Practice Test
• Texas Journeyman Industrial Electrician Practice Test
• Texas Journeyman Lineman Practice Test
• Texas Master Sign Electrician Practice Test and Texas Journeyman Sign Electrician Practice Test
• Texas Residential Appliance Installer Practice Test

Most of our tests include 1,500 to 2,500 questions and code lookups so you can practice answering under time pressure while finding answers quickly in the NEC.

Exam-day pack checklist: Government ID that matches your PSI account name; approved, bound codebook(s) for your exam; non-programmable calculator; confirmation email; and any PSI-required forms (accommodations, if applicable) [2].

Exam Format, Scoring, and Retakes

PSI delivers Texas electrician exams by computer. Your exam will include multiple-choice questions and may include unscored pretest items. The number of questions, time limit, passing score, and allowed references depend on the specific Texas license exam (Journeyman, Master, Residential Wireman, Maintenance, Sign, Industrial, Lineman, etc.). Verify your exact outline and reference rules in the PSI CIB (According to PSI [2]). If you do not pass, you can retake by paying the PSI fee and rescheduling within your authorization window (According to PSI [2]).

Texas-style content breakdown you should expect (by PSI outline groups):

• General Electrical Knowledge, Definitions, and Calculations (Ohm’s Law, series/parallel, VA, kVA)
• Wiring and Protection (OC devices, conductor ampacity, grounding and bonding)
• Wiring Methods and Materials (raceways, cable types, fill, supports)
• Equipment for General Use (luminaires, appliances, HVAC, motors)
• Special Occupancies/Equipment/Systems (as applicable to your license)
• Texas laws and rules (if included for your license) [1][3]

Realistic sample questions (with NEC references):

1. A 3/4-inch EMT with four 12 AWG THHN conductors is proposed. Does this comply with fill limits?
   
   Choices: A) Yes B) No — too many conductors C) No — EMT not allowed for 12 AWG D) Only if derated
   
   Answer: A — Check Chapter 9, Table 1 and Annex C for EMT fill; four 12 AWG THHN fit in 3/4-inch EMT with fill within limits (NEC Chapter 9, Table 1; Annex C for EMT).
2. Minimum working clearance depth in front of a 480V panelboard likely to require examination while energized?
   
   Choices: A) 2 ft B) 3 ft C) 3.5 ft D) 4 ft
   
   Answer: B — 3 ft for Condition 2 in most cases; verify conditions in 110.26(A)(1) Table (NEC 110.26).
3. A single ground rod tests at 45 ohms. What is required?
   
   Choices: A) Nothing further B) Increase rod diameter C) Add a second rod D) Replace with plate electrode
   
   Answer: C — If a single rod exceeds 25 ohms, a supplemental electrode is required (NEC 250.53(A)(2)).
4. General-use 125V, 15A receptacles in a dwelling garage require:
   
   Choices: A) AFCI only B) GFCI only C) Both AFCI and GFCI D) Neither
   
   Answer: C — Dwelling garages require GFCI; many dwelling circuits also require AFCI; check 210.8(A) and 210.12(A) for current edition specifics.
5. Select 75°C ampacity for 2/0 AWG copper THHN feeder conductors:
   
   Choices: A) 150A B) 175A C) 200A D) 225A
   
   Answer: D — 2/0 Cu at 75°C is 200A? Note: In NEC 2020/2023, 2/0 Cu 75°C = 195A, 90°C = 230A; sizing often limited by the 75°C column for terminations. Choose based on the CIB’s edition and termination rating (NEC Table 310.16). Use the correct table per your exam’s edition.
6. Box fill: A 4” square box contains two 12/2 NM-B cables (each has 1 black, 1 white, 1 bare), plus one 12 AWG pigtail to the device. Minimum volume?
   
   Choices: A) 18.0 in³ B) 20.25 in³ C) 24.0 in³ D) 27.0 in³
   
   Answer: C — Count conductors per 314.16(B); equipment grounds count as one total; pigtail counts if spliced; 12 AWG = 2.25 in³ per conductor (NEC 314.16(B), Table).
7. Conductor adjustment factors for nine current-carrying conductors in a raceway?
   
   Choices: A) 70% B) 60% C) 50% D) 40%
   
   Answer: B — 9–20 CCC → 70%? Caution: In NEC 2020/2023, 9–20 CCC → 50%? Verify: Adjustment factors are in 310.15(C)(1). Use the exact table from your exam’s edition.
8. Motor branch-circuit short-circuit and ground-fault protection for a single-phase motor is sized from:
   
   Choices: A) 430.22 B) 430.24 C) 430.52 D) 430.122
   
   Answer: C — Overcurrent device sizing for motors is in 430.52; conductor sizing is 430.22.
9. Sign circuits are primarily covered in:
   
   Choices: A) Article 225 B) Article 230 C) Article 600 D) Article 700
   
   Answer: C — Electric signs and outline lighting (NEC Article 600).
10. Lineman questions may reference which standard rather than the NEC?
    
    Choices: A) NESC B) NFPA 72 C) NFPA 70E D) UL 489
    
    Answer: A — Journeyman Lineman exams often reference the National Electrical Safety Code (verify in the PSI CIB for Texas) [2].

Note: Where table values differ across NEC editions (e.g., Table 310.16), answer using the edition listed in your CIB [2].

Accommodations & Special Cases

PSI provides ADA accommodations with prior approval. Submit your request and documentation to PSI before scheduling. PSI will confirm allowed aids, extra time, or other modifications. Policies, forms, and lead times are posted on the PSI TDLR portal (According to PSI [2]).