ASTTBC RFPT — Emergency Lighting (EM) · Question
Under CAN/ULC-S572, photoluminescent exit signs must be tested for visibility by ensuring they are exposed to a specific minimum illumination level. What is this standard charging light level?
CAN/ULC-S572 specifies that photoluminescent signs must be charged with a minimum of 54 lux (5 foot-candles) of illumination at all times the building is occupi
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Question: Under CAN/ULC-S572, photoluminescent exit signs must be tested for visibility by ensuring they are exposed to a specific minimum illumination level. What is this standard charging light level?
Answer options:
- 22 lux (2 foot-candles) ✅ 54 lux (5 foot-candles)
- 108 lux (10 foot-candles)
- 215 lux (20 foot-candles)
Correct answer: 54 lux (5 foot-candles)
Explanation: CAN/ULC-S572 specifies that photoluminescent signs must be charged with a minimum of 54 lux (5 foot-candles) of illumination at all times the building is occupied to ensure the required luminance duration in an emergency.
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- According to CSA C282, what is the required minimum frequency for performing a full-load rated test on an emer
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