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 (99)
✍️ 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. A feeder supplies a continuous load of 80A. What is the minimum conductor ampacity required before applying breaker sizing?
Conductors for continuous loads must be sized at 125% of the load (80A × 1.25 = 100A) per NEC 215.2.
3. Which motor protection scheme uses a set of normally-closed auxiliary contacts from one contactor wired in series with the coil of the other contactor to prevent both from energizing simultaneously?
Electrical interlocking uses NC auxiliary contacts from each contactor in the opposing contactor's coil circuit to prevent simultaneous energization (common in reversing starters).
4. 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.
5. 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.
6. 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.
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