Texas journeyman calculations practice: format, time and 3 worked examples
In FY2025 only about 21% of journeyman calculation attempts passed. It is the hardest part, and the one where steady practice pays off most.
The format
| Questions | 26 (2 not scored) |
| Time | 110 minutes, about 4 minutes per question |
| Pass | 70% |
| Calculator | Silent, non-programmable, no letter keys |
| Conductors | Copper unless the question says otherwise |
Topics include electrical theory, load calculations, services, feeders, branch circuits, conductors, motors and generators, special occupancies and renewable energy.
Example 1: current from watts
Question: A 1,500-watt heater runs on 120 volts. What current does it draw?
Solution: I = P ÷ E = 1,500 ÷ 120 = 12.5 amps.
Solution: I = P ÷ E = 1,500 ÷ 120 = 12.5 amps.
Example 2: box fill
Question: A box holds four 12 AWG conductors and nothing else. How much volume do they need?
Solution: Each 12 AWG conductor counts 2.25 cubic inches (NEC Table 314.16(B)). 4 × 2.25 = 9.0 cubic inches.
Solution: Each 12 AWG conductor counts 2.25 cubic inches (NEC Table 314.16(B)). 4 × 2.25 = 9.0 cubic inches.
Example 3: continuous load
Question: A branch circuit supplies a continuous load of 16 amps. What is the minimum overcurrent device rating?
Solution: For continuous loads, the device must be rated at least 125% of the continuous load (NEC 210.20(A)). 16 × 1.25 = 20 amps → 20-amp breaker.
Solution: For continuous loads, the device must be rated at least 125% of the continuous load (NEC 210.20(A)). 16 × 1.25 = 20 amps → 20-amp breaker.
How to practice
- 15 minutes a day beats one long weekend session.
- Write each step. A skipped step costs points even when you know the formula.
- Find the table first. Know where the tables you use most are in your 2026 NEC.
- Time yourself: about 4 minutes per question.
Where do you lose points?
Take the free 5-question check. You see your weak topics and where each answer is in your code book.
Start the free check →
Take the free 5-question check. You see your weak topics and where each answer is in your code book.
Start the free check →
More for your retake
- Failed the exam? 5 steps before your retake
- Texas journeyman exam pass rate
- Retake fee and rules
- Is the exam open book?
- Exam topics list
- 2026 NEC: what changed for the exam
Sources: PSI Candidate Information Bulletin, Texas Journeyman Electrician (updated Sept 15, 2026) · TDLR electrician exam statistics, FY2025. Rules can change: always check the current bulletin before you book.