The Journeyman Electrician State Licensing Exam (NEC) is the credential that opens doors for Apprentice and journeyman electricians preparing for state/local licensing exams. It’s also one of the most failed certification exams when candidates rely on textbook reading alone — roughly 45% of first-time candidates fail because they never built up the recall speed that real practice questions train.

This guide gives you 12 high-quality Journeyman Electrician practice questions sourced from our free Android app’s question bank, complete with detailed explanations. Click any answer to test yourself, then expand the explanation to learn the why behind it.

💡 How to use this guide: Don’t just read — answer first, then check. Active recall is the single most effective study technique for high-stakes certification exams.

📋 Journeyman Electrician Exam Quick Facts


🎯 12 Real-Style Journeyman Electrician Practice Questions

Test yourself below. All questions reflect the real exam’s style, difficulty, and content distribution across all domains.

Question 1

Question Easy

What is the maximum voltage for Class 2 power-limited circuits under dry conditions per NEC 725.41? (Circuit 30)

Show Answer & Explanation

Correct Answer: A — 30V

Explanation: Per NEC 725.41, Class 2 circuits limited to 30V max (dry conditions).

Question 2

Question Easy

What is the minimum working clearance required for 600V equipment per NEC 110.26(A)(1)? (Site 39)

Show Answer & Explanation

Correct Answer: B — 3 feet 6 inches

Explanation: NEC 110.26(A)(1): 600V requires 3 feet 6 inches minimum (Condition 1).

Question 3

Question Easy

What is the minimum working clearance required in front of a 277V panelboard per NEC 110.26(A)(1) Condition 1? (Location #64)

Show Answer & Explanation

Correct Answer: C — 3 feet

Explanation: NEC 110.26(A)(1): 151V-600V requires 3' minimum clearance (Condition 1).

Question 4

Question Easy

For a 100A circuit breaker, what is the minimum copper conductor size required (75°C termination) per NEC 240.4(D)? (Installation #78)

Show Answer & Explanation

Correct Answer: D — 1 AWG

Explanation: Per NEC 240.4(D), 1 AWG copper is protected at 100A maximum.

Question 5

Question Easy

What is the maximum number of 8 AWG THHN conductors allowed in 1" EMT conduit per NEC Chapter 9 Table C1? (Scenario #3)

Show Answer & Explanation

Correct Answer: B — Refer to NEC Table C1

Explanation: NEC Chapter 9 Table C1 provides fill capacity for EMT conduit.

Question 6

Question Easy

What is the full load current of a 20 HP, 230V, single-phase motor per NEC Table 430.248? (Motor 66)

Show Answer & Explanation

Correct Answer: D — Refer to NEC Table 430.248

Explanation: NEC Table 430.248 provides FLC values for single-phase motors.

Question 7

Question Easy

What is the minimum copper grounding electrode conductor size for a 265A service installation per NEC 250.66? (Case 56)

Show Answer & Explanation

Correct Answer: A — #6 AWG

Explanation: Per NEC 250.66, services up to 200A require #8 copper GEC minimum.

Question 8

Question Easy

Calculate total watts for a load: 277 volts, 10 amperes.

Show Answer & Explanation

Correct Answer: C — 2770W

Explanation: P = V × I = 277V × 10A = 2770W

Question 9

Question Easy

What is the maximum voltage for Class 2 power-limited circuits under dry conditions per NEC 725.41? (Circuit 24)

Show Answer & Explanation

Correct Answer: C — 30V

Explanation: Per NEC 725.41, Class 2 circuits limited to 30V max (dry conditions).

Question 10

Question Easy

What is the minimum working clearance required for 277V equipment per NEC 110.26(A)(1)? (Site 41)

Show Answer & Explanation

Correct Answer: D — 3 feet 6 inches

Explanation: NEC 110.26(A)(1): 277V requires 3 feet 6 inches minimum (Condition 1).

Question 11

Question Easy

What is the minimum working clearance required in front of a 277V panelboard per NEC 110.26(A)(1) Condition 1? (Location #72)

Show Answer & Explanation

Correct Answer: A — 3 feet

Explanation: NEC 110.26(A)(1): 151V-600V requires 3' minimum clearance (Condition 1).

Question 12

Question Easy

For a 15A circuit breaker, what is the minimum copper conductor size required (75°C termination) per NEC 240.4(D)? (Installation #98)

Show Answer & Explanation

Correct Answer: A — 14 AWG

Explanation: Per NEC 240.4(D), 14 AWG copper is protected at 15A maximum.


📚 The 7 Highest-Yield Journeyman Electrician Topics

These are the topics our analysis of past candidates’ feedback shows appear most often:

  1. General Requirements
  2. Wiring Methods & Materials
  3. Equipment for General Use
  4. Special Occupancies
  5. Special Equipment
  6. Communications Systems
  7. Calculations & Conduit Fill
  8. Grounding & Bonding

Focus your study time proportional to the weight of each domain. The exam is not uniformly distributed — some domains carry far more weight than others.



❓ Frequently Asked Questions

How hard is the Journeyman Electrician exam?

The Journeyman Electrician is moderately difficult — about 55% of first-time candidates pass. The challenge isn’t memorizing facts in isolation, it’s recalling them quickly under timed pressure across multiple domains.

How long should I study for the Journeyman Electrician exam?

Most candidates need 8-16 weeks of consistent study (1-2 hours per day). If you have hands-on field experience, you may need less. Our free app provides hundreds of practice questions to help you self-pace.

What is the passing score?

Varies by certifying body — typically 70-75%.

How much does the exam cost?

Varies by region and certifying body. Check the official exam authority for current fees.

Can I retake the exam if I fail?

Yes. Most certifying bodies allow retakes after a 30-day waiting period, with limits on attempts within a 12-month window. Each retake requires a new exam fee.

Is the Corithm Flow Matrix Journeyman Electrician app really free?

Yes — completely free with optional premium features. The free version includes hundreds of practice questions across all domains. No login or signup required.



🚀 Ready to Pass Your Journeyman Electrician Exam?

The 12 questions above are just a fraction of what’s on the real exam. To pass on your first attempt, you need to practice with hundreds of questions, track your weak areas, and build the recall speed that timed exams demand.

Our free Android app delivers exactly that:

  • Hundreds of practice questions across all exam domains
  • Detailed explanations for every question
  • Mock exams that mirror the real test format
  • Progress tracking by category
  • Works offline — study anywhere, no signup required
  • Free forever with optional ad-free premium upgrade

Good luck on your exam — you’ve got this. 💪