Journeyman Electrician's Lighting and Luminaires 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 Lighting and Luminaires flashcards as text
An outlet box used to support a luminaire weighing more than 50 pounds must be:
Answer: Listed and marked for the weight to be supported
NEC 314.27(A)(2) requires that outlet boxes used to support luminaires weighing more than 50 pounds be listed and marked for the specific weight to be supported, ensuring structural adequacy.
Non-IC rated recessed luminaire housings must maintain a minimum clearance of _____ from combustible material on all sides.
Answer: 1/2 inch
NEC 410.116(A)(1) requires non-IC rated recessed luminaire housings to be spaced so that there is not less than 1/2-inch clearance on all sides from combustible material.
Emergency lighting systems required by the NEC must provide illumination for a minimum of:
Answer: 90 minutes
NEC 700.12 requires emergency lighting systems to provide at least 1-1/2 hours (90 minutes) of illumination upon loss of normal power to allow safe egress from the building.
Conductors at the outlet box that supply a luminaire must have an insulation temperature rating of not less than:
Answer: 75 degrees C (167 degrees F)
NEC 410.117(C) requires that conductors at the point of connection to luminaire wiring have an insulation temperature rating of not less than 75 degrees C due to the elevated temperatures present in luminaire outlet boxes.
A luminaire listed for wet locations and installed outdoors must be constructed and installed so that:
Answer: Water cannot enter or accumulate in wiring compartments or lamp sockets
NEC 410.10(A) requires that wet location luminaires be constructed and installed so that water cannot enter or accumulate within electrical parts such as wiring compartments, lampholders, or other components.
Lighting track (NEC Article 410, Part XIV) is prohibited from installation in all of the following EXCEPT:
Answer: In a dry commercial office ceiling
NEC 410.151(A) prohibits track lighting in wet/damp locations, where subject to physical damage, and within bathtub/shower zones, but does not restrict installation in dry interior commercial areas.
According to NEC 410.130(G), the disconnecting means for fluorescent luminaires must disconnect:
Answer: All conductors simultaneously, including the grounded conductor
NEC 410.130(G) requires that the disconnecting means for fluorescent luminaires simultaneously disconnect all conductors, including the grounded conductor, to fully de-energize the luminaire during maintenance.