Journeyman Electrician's 2026 Edition Flashcards
7 cards from real Journeyman Electrician’s Exam practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Journeyman Electrician's 2026 Edition flashcards as text
What is the maximum overcurrent protection permitted for a 10 AWG copper conductor with THWN insulation used on a branch circuit?
Answer: 30A
Per NEC 240.4(D)(3), 10 AWG copper conductors are limited to a maximum 30A overcurrent device on branch circuits.
Which of the following is considered a separately derived system?
Answer: An isolation transformer with no direct electrical connection to the supply
A separately derived system has no direct electrical connection to supply conductors; an isolation transformer's secondary meets this definition.
Under the NEC, which of the following luminaires (light fixtures) requires GFCI protection when installed outdoors in a wet location?
Answer: Only luminaires that plug into receptacles
NEC 210.8 requires GFCI protection for receptacles in wet outdoor locations; luminaires hardwired at wet locations do not inherently require GFCI by that section.
What is the maximum distance a disconnect must be from a rooftop HVAC unit to be considered 'within sight' per the NEC?
Answer: 50 feet
Per NEC Article 100, 'within sight' means visible and not more than 50 feet from the equipment requiring disconnection.
A raceway installed in a concrete slab must have a minimum cover of how many inches if not encased in concrete?
Answer: 3 inches
NEC Table 300.5 requires a minimum 3-inch cover for raceways installed under a building or concrete slab without additional concrete encasement.
For a multiwire branch circuit (MWBC) in a panelboard, what is required of the breakers protecting the circuit per the 2023 NEC?
Answer: They must be handle-tied or a 2-pole breaker
NEC 210.4(B) requires that all ungrounded conductors of a multiwire branch circuit be provided with a means to simultaneously disconnect all conductors, such as handle-tied breakers or a 2-pole breaker.
What is the minimum size equipment grounding conductor (EGC) required for a circuit protected by a 60A overcurrent device using copper conductors?
Answer: 8 AWG
Per NEC Table 250.122, a circuit protected by a 60A overcurrent device requires a minimum 10 AWG copper equipment grounding conductor.