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 Class I, Division 1 location, which wiring method is NOT permitted?
Answer: Type NM cable
Type NM (nonmetallic sheathed) cable is not permitted in Class I hazardous locations; only approved methods like RMC or MI cable are allowed.
What is the minimum distance that open wiring must be kept from the surface of grain storage bins per NEC Article 511?
Answer: 12 inches
NEC Article 511 and related agricultural occupancy rules require open wiring to be kept at least 12 inches from grain bin surfaces to prevent fire hazards.
In a gasoline dispensing station, the area within 18 inches horizontally from a dispenser enclosure is classified as:
Answer: Class I, Division 2
Per NEC Article 514, the area within 18 inches horizontally and 4 inches vertically from a dispenser enclosure is classified Class I, Division 2.
Which NEC article covers electrical installations in health care facilities?
Answer: Article 517
NEC Article 517 specifically governs electrical wiring and equipment in health care facilities including hospitals and nursing homes.
In a commercial garage, the floor area up to what height above the floor is classified as Class I, Division 2?
Answer: 18 inches
Per NEC 511.3, the area up to 18 inches above the floor in a commercial garage is classified Class I, Division 2 due to heavier-than-air gasoline vapors.
An essential electrical system in a hospital must restore power within how many seconds after a utility outage?
Answer: 10 seconds
NEC 517.31 requires the essential electrical system's life safety branch to restore power within 10 seconds of a normal power interruption.
In a Class II, Division 1 location, dust-ignitionproof equipment is required. Which type of dust classifies a location as Class II?
Answer: Combustible dust
Class II locations are defined by the presence of combustible dust, such as grain dust, coal dust, or metal dust, in quantities sufficient to produce an ignitable mixture.