IMSA Roadway Lighting II Practice Questions - IMSA Roadway Lighting Technician Level II Certification Exam

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When performing a lighting design calculation using the lumen method, which formula determines the average maintained illuminance on a roadway?

Illuminance = Wattage / Area Illuminance = (Lumens × CU × LLF) / Area Illuminance = Voltage × Current Illuminance = Candelas / Distance²

Correct Answer:

Illuminance = (Lumens × CU × LLF) / Area

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