On an electrical schedule, a lighting fixture is listed as '4-F32T8'. What does this designation indicate?
Correct Answer
D) 4-lamp fixture with 32-watt T8 fluorescent lamps
The designation '4-F32T8' indicates a 4-lamp fixture using F32T8 fluorescent lamps, where F32 means 32-watt fluorescent and T8 refers to the lamp diameter (8/8 inch or 1 inch diameter).
Why This Is the Correct Answer
The designation '4-F32T8' follows standard electrical nomenclature where the first number indicates the quantity of lamps in the fixture. 'F32' designates a 32-watt fluorescent lamp, and 'T8' refers to the tubular shape with a diameter of 8/8 inch (1 inch). This is a single fixture containing four individual F32T8 fluorescent lamps.
Why the Other Options Are Wrong
Option A: 4 fixtures, each with 32-watt fluorescent lamps, T8 configuration
This interpretation incorrectly reads the designation as indicating 4 separate fixtures rather than 4 lamps within a single fixture. The number at the beginning of the designation refers to lamp quantity, not fixture quantity.
Option B: 4-circuit fixture, 32-amp capacity, Type 8 installation
This interpretation is entirely incorrect as it confuses lighting terminology with electrical circuit terminology. The designation has nothing to do with circuits, amperage, or installation types.
Memory Technique
Think 'Count-Type-Watts-Shape': 4 (count of lamps) - F (fluorescent) - 32 (watts per lamp) - T8 (tubular, 8/8 inch diameter)
Reference Hint
NEC Article 410 (Luminaires, Lampholders, and Lamps) or electrical symbols and abbreviations section in construction reference materials
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