COMMERCIAL ELECTRICAL WIRING|ACTUAL
EXAM QUESTIONS AND 100% CORRECT
ANSWERS|LATEST 2025/2026|GRADED A+
A(n) ____ branch circuit must supply only line-to-neutral loads if the luminaires are
connected line-to-neutral. - ANSWER- multiwire
Beginning with the 2008 edition of the National Electrical Code, the term luminaire is used
exclusively. Previous editions of the NEC® used the term luminaire followed by the term
____ in parentheses. - ANSWER- fixture
Both Type THWN-2 and Type ____ conductors have an insulation temperature rating of 90
degrees Celsius and generally meet the temperature requirement for connecting luminaires.
- ANSWER- THHN
Both incandescent and fluorescent recessed luminaires are marked with the temperature
rating required for the ____ if more than 60 degrees C. - ANSWER- supply conductors
Describe the rules governing the disconnecting means for fluorescent luminaires. - ANSWER-
Permitted to be inside or outside of the luminaire
If outside of the luminaire, it must be within sight of the luminaire
For fluorescent and HID luminaires, the volt-ampere allowance is based on the rating of the
____. - ANSWER- ballast
For surface-mounted and pendant-hung luminaires, support rods should be placed so that
they extend about ____ in. below the finished ceiling. - ANSWER- one
Incandescent, open, or ____ lamps in lampholders; pendant luminaires; and pendant
lampholders are not permitted in clothes closets. - ANSWER- partially open
EXAM QUESTIONS AND 100% CORRECT
ANSWERS|LATEST 2025/2026|GRADED A+
A(n) ____ branch circuit must supply only line-to-neutral loads if the luminaires are
connected line-to-neutral. - ANSWER- multiwire
Beginning with the 2008 edition of the National Electrical Code, the term luminaire is used
exclusively. Previous editions of the NEC® used the term luminaire followed by the term
____ in parentheses. - ANSWER- fixture
Both Type THWN-2 and Type ____ conductors have an insulation temperature rating of 90
degrees Celsius and generally meet the temperature requirement for connecting luminaires.
- ANSWER- THHN
Both incandescent and fluorescent recessed luminaires are marked with the temperature
rating required for the ____ if more than 60 degrees C. - ANSWER- supply conductors
Describe the rules governing the disconnecting means for fluorescent luminaires. - ANSWER-
Permitted to be inside or outside of the luminaire
If outside of the luminaire, it must be within sight of the luminaire
For fluorescent and HID luminaires, the volt-ampere allowance is based on the rating of the
____. - ANSWER- ballast
For surface-mounted and pendant-hung luminaires, support rods should be placed so that
they extend about ____ in. below the finished ceiling. - ANSWER- one
Incandescent, open, or ____ lamps in lampholders; pendant luminaires; and pendant
lampholders are not permitted in clothes closets. - ANSWER- partially open
