HZWIZ
Member
- Location
- Los Angeles, California USA
It states Where high-intensity discharge lighting such as high- and lowpressure sodium, mercury vapor, and metal halide is used as the sole source of normal illumination, the emergency lighting system shall be required to operate until normal lluminationhas been restored.
With is this type of lighting. Why is it that the emergency lighting system shall be required to operate until normal llumination
has been restored?
With is this type of lighting. Why is it that the emergency lighting system shall be required to operate until normal llumination
has been restored?