Commercial Usage
Knowing what your specific local code requirements are in regard to building height, facility size, and occupancy load to be compliant with the number and placement of emergency lights is important to risk management and human safety.
Technical Considerations.
Take into account how to arrange your emergency lighting circuits. Though not part of the code regulations, this critical factor can matter down the road. If you have a generator back up, your emergency lights will only need battery back up for a short time.