Yes, emergency lighting requirements dictate that these luminaires must always be on, even when the normal lighting is functioning. The purpose of emergency lighting is to provide illumination during power outages or emergencies when the regular lighting system fails. By remaining operational continuously, emergency lights ensure that exit routes, stairwells, and other critical areas are well-lit and visible, enabling people to evacuate safely in an emergency. This constant illumination helps maintain a safe means of egress throughout the building, regardless of the availability of normal lighting.