Journeyman Electrician's Special Occupancies 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 Special Occupancies flashcards as text
In a theater, which NEC article governs the electrical installations for the stage area?
Answer: Article 520
NEC Article 520 covers electrical installations in theaters, audience areas of motion picture studios, and similar locations.
What type of grounding is required for patient care areas in a hospital to minimize electrical shock hazards?
Answer: Equipotential grounding
NEC 517.13 requires equipotential grounding in patient care areas to reduce voltage differences between conductive surfaces that could cause microshock.
A spray booth used for applying flammable finishes falls under which NEC article?
Answer: Article 516
NEC Article 516 covers spray application, dipping, and coating processes involving flammable or combustible liquids or powders.
In a Class III hazardous location, what is the primary hazard?
Answer: Easily ignitable fibers or flyings
Class III locations are those that are hazardous due to the presence of easily ignitable fibers or flyings, such as cotton, rayon, or hemp.
Flexible cord used with portable equipment in a hazardous Class I, Division 2 location must be:
Answer: Extra-hard-usage cord with grounding conductor
NEC 501.140 requires extra-hard-usage flexible cord with a grounding conductor for portable equipment in Class I hazardous locations.
In an agricultural building with a livestock area, what additional requirement applies to all 125V receptacles?
Answer: GFCI protection
NEC 547.5 requires GFCI protection for all 125V, 15A and 20A receptacles in agricultural buildings with livestock, as animals are more vulnerable to electric shock.
Which of the following best describes a 'critical branch' in a hospital essential electrical system?
Answer: Supplies task illumination and selected receptacles in patient care areas
Per NEC 517.33, the critical branch of the essential electrical system supplies task illumination, selected receptacles, and equipment in patient care areas.