How much light is needed to “charge” a Photoluminescent Exit Sign?
Only 5 ft. candles are needed for a photoluminescent exit sign to glow properly. If you are not familiar with candle ratings — that’s almost too dark for you to see in! Most hallways have 25-30 fi candles of light when the lights are on. Generally, photoluminescent signs absorb most effectively from flourescent light and natural light.
