When are auxiliary lighting systems required in commercial buildings?

Auxiliary lighting systems are specifically required to ensure adequate illumination during emergencies, which is critical for safety. These systems provide necessary lighting when normal power sources fail, allowing occupants to safely navigate exits and evacuate the building during power outages or other emergency situations. Building codes, such as those established by the International Building Code (IBC), mandate these systems in certain locations to protect the safety of building occupants.

The inclusion of auxiliary lighting is particularly relevant in areas such as stairwells, hallways, and assembly areas where visibility is crucial for safe egress. Compliance with these requirements helps minimize risks and injuries in case of emergencies, thus promoting safety in commercial environments.