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Electrician Mixed Supplemental Practice

620 public supplemental prompts across 18 topics, each with a written explanation of why the correct answer is correct. Start below — the first questions are free and no account is required.

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Current mixed-practice topic labels

Sample supplemental Journeyman Electrician questions

Grounding & Bonding

What is the minimum size copper grounding electrode conductor required for a service supplied by 3/0 AWG copper service-entrance conductors?

  1. A. 2 AWG
  2. B. 4 AWG
  3. C. 6 AWG
  4. D. 8 AWG

Answer: B. According to Table 250.66, for service-entrance conductors sized 2/0 or 3/0 AWG, the required copper grounding electrode conductor is 4 AWG.

Motors

When sizing conductors for a 3-phase motor, which current rating must be used?

  1. A. The Service Factor Amps
  2. B. The nameplate current rating
  3. C. The Locked Rotor Current
  4. D. The Full Load Current (FLC) from NEC Tables 430.248 through 430.250

Answer: D. NEC 430.6(A)(1) requires that for general motor applications, the FLC values given in Tables 430.247 through 430.250 be used to determine the ampacity of conductors and switch ratings, not the nameplate current.

Load Calculations

According to NEC 2026, which article now contains the general requirements for calculating floor area?

  1. A. Article 100
  2. B. Article 120
  3. C. Article 220
  4. D. Article 310

Answer: B. NEC 2026 moved the general calculation requirements, including floor area determination, to the new Article 120.

Work through every topic on the Electrician supplemental question directory, or start mixed supplemental practice above.

Journeyman Electrician exam — frequently asked questions

How many questions are on the Journeyman Electrician exam?

Electrician formats are jurisdiction-specific. Current Texas Journeyman uses separate 59-item Knowledge and 26-item Calculations portions, but other jurisdictions differ. VoltExam provides 661 mixed supplemental questions; zero are currently admitted as Texas PSI 2026-aligned.

What score do you need to pass the Journeyman Electrician exam?

Passing rules are jurisdiction-specific. Current Texas Journeyman requires 70% on each of its two portions. Confirm your own current official bulletin and use mixed practice results only to select review topics.

What is the pass rate for the Journeyman Electrician exam?

VoltExam has not verified a current administering-authority source for one first-attempt percentage across electrician jurisdictions, so it does not estimate a pass rate or claim that practice predicts the certification result. Check the current bulletin for your licensing authority.

How long should I study for the Journeyman Electrician exam?

Study time depends on your experience, jurisdiction, code edition, and current official outline. Separate official portions before using supplemental practice to choose weak topics.

What topics are on the Journeyman Electrician exam?

VoltExam's current mixed supplemental bank groups prompts under labels including Grounding & Bonding, Motors, Load Calculations, Conductors & Ampacity, Overcurrent Protection. Those labels are not a jurisdiction-specific blueprint, and no legacy item is currently admitted to the Texas Journeyman PSI 2026 outline.