Journeyman Electrician’s Exam Study Guide 2026
Everything you need to pass the Journeyman Electrician’s Exam exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 Journeyman Electrician’s Exam Exam Format at a Glance
📚 Journeyman Electrician’s Exam Topics to Study (51)
✍️ Sample Journeyman Electrician’s Exam Questions & Answers
1. Per NEC 408.36(D), a back-fed circuit breaker used as the supply overcurrent protective device for a panelboard must be:
NEC 408.36(D) requires back-fed devices to be secured with an additional fastener that requires more than a simple pull to release, preventing accidental removal under load.
2. If the computation for branch-circuits yields a value of 3.1, how many branch-circuits should be installed?
When calculating the number of branch circuits required, any fractional result must always be rounded up to the next whole number. This ensures that there is sufficient capacity to safely handle the calculated load, preventing overloading and ensuring compliance with electrical codes. Therefore, 3.1 branch circuits would necessitate installing 4 circuits.
3. When emergency system wiring must occupy the same enclosure as normal wiring at a transfer switch, this is permitted because:
NEC 700.10(B)(5) provides a specific exception to the wiring independence rule at transfer equipment, since this is the inherent connection point between the two sources.
4. Rigid PVC Conduit (Schedule 40 and Schedule 80) is governed by which NEC article?
NEC Article 352 covers Rigid PVC Conduit, including both Schedule 40 and Schedule 80, and specifies where each schedule is permitted.
5. In a 3-phase, 4-wire wye system where the line-to-line voltage is 208V, what is the line-to-neutral (phase) voltage?
Phase voltage = line voltage ÷ √3 = 208 ÷ 1.732 ≈ 120V, the standard single-phase voltage in a 208Y/120V system.
6. For load calculation purposes, each 2-foot (600 mm) section of lighting track shall be considered a load of:
NEC 410.151(B) specifies that each 2-foot section of lighting track or fraction thereof shall be considered a load of 150 volt-amperes when calculating circuit load.