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.
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The minimum load for show window lighting shall be calculated at:
Answer: 200 volt-amperes per linear foot
NEC 220.43(A) requires that show windows be calculated at a minimum of 200 volt-amperes per linear foot, measured horizontally along the base of the show window.
An outlet box used to support a ceiling-suspended (paddle) fan must be:
Answer: Listed and marked for use with ceiling-suspended (paddle) fans
NEC 314.27(D) requires outlet boxes that support paddle fans to be listed and marked for use with ceiling-suspended fans because they must withstand the unique dynamic loading and vibration produced by a rotating fan.
A recessed luminaire identified as Type IC (insulation contact rated) is permitted to:
Answer: Be installed in direct contact with thermal insulation
IC-rated luminaires are listed and tested to be installed in direct contact with thermal insulation without creating a fire hazard, eliminating the clearance requirements that apply to non-IC fixtures.
In a polarized luminaire, the screw shell of the lampholder must be connected to:
Answer: The grounded (neutral) conductor
NEC 410.54 requires the screw shell of a polarized lampholder to be connected to the grounded (neutral) conductor, ensuring only the center contact is energized and reducing shock risk during lamp replacement.
An outlet box installed in an outdoor location exposed to rain must be:
Answer: Listed for use in wet locations
NEC 314.15 requires that outlet boxes installed in wet locations be listed for use in wet locations and installed so that moisture cannot enter or accumulate within the box.
A luminaire installed in a Class I, Division 1 hazardous location must be:
Answer: Listed for the specific class, division, and group of the hazardous location
NEC Articles 501 through 503 require luminaires in hazardous locations to be specifically listed for the applicable class, division, and group, as different hazardous atmospheres require different protection methods.
Emergency lighting required by NEC Article 700 must provide a minimum average illumination at the floor level along the path of egress of:
Answer: 1 foot-candle average with 0.1 foot-candle minimum at any point
Emergency lighting systems must provide an initial average of not less than 1 foot-candle (10.8 lux) with a minimum of 0.1 foot-candle at any point along the path of egress at floor level.