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 health care facility, which of the following is connected to the 'life safety branch' of the essential electrical system?
Answer: Exit signs and egress lighting
NEC 517.32 specifies that the life safety branch supplies exit signs, means of egress lighting, fire alarms, and similar life-safety systems.
When installing wiring in a Class I, Division 1 area, which seal requirement applies to conduit entering explosion-proof enclosures?
Answer: A sealing fitting must be installed within 18 inches of the enclosure
NEC 501.15(A) requires conduit seals to be installed within 18 inches of explosion-proof enclosures in Class I, Division 1 locations to prevent passage of flames or gases.
What is the required GFCI protection for 125V receptacles installed outdoors at a temporary power distribution system for a construction site?
Answer: All 125V, 15A and 20A receptacles must have GFCI protection
NEC 590.6 requires GFCI protection for all 125V, 15A and 20A receptacles at construction sites regardless of location type.
In a recreational vehicle park, each RV site with electrical supply must have at minimum which receptacle configuration?
Answer: Both 20A, 125V and 30A, 125V receptacles
NEC 551.71 requires that each RV site with electrical supply be equipped with at least a 20A, 125V receptacle and a 30A, 125V receptacle.
In an aircraft hangar, the area within 5 feet horizontally from aircraft fuel tanks is classified as:
Answer: Class I, Division 1
NEC 513.3(A) classifies the area within 5 feet horizontally from aircraft fuel tanks as Class I, Division 1 due to the continuous presence of ignitable vapors.
What NEC article applies to electrical systems installed in floating buildings?
Answer: Article 553
NEC Article 553 specifically covers electrical wiring and equipment in floating buildings, which are permanent structures on water.
In a Class II, Division 2 location where combustible dust may accumulate, luminaires must be designed to prevent surface temperatures from exceeding what percentage of the dust's ignition temperature?
Answer: 80%
Equipment in Class II locations must not have surface temperatures exceeding 80% of the ignition temperature of the specific combustible dust to prevent ignition.