If a commercial indoor agriculture business uses lighting in a room for plant growth would that lighting also be included in the minimum lighting requirements in 220.12 or does a room require a secondary lighting system that complies with 220.12? I'm wondering because the plant lighting has to be off during part of the day so a person working in the room when the lights are off would be in the dark. When the lights are on they are often not a full spectrum white light and do not provide good illumination for people to work under, great for plants though.
So basically, should I treat the plant grow lights as process lighting and not room lighting, and install a separate lighting system to be used when people are working in the room to comply with the NEC?
So basically, should I treat the plant grow lights as process lighting and not room lighting, and install a separate lighting system to be used when people are working in the room to comply with the NEC?