What is the maximum allowable time for emergency lighting or power to be available during an emergency?

The maximum allowable time for emergency lighting or power to become operational during an emergency is 10 seconds. This requirement is established to ensure that adequate illumination is available promptly in emergency situations, such as power outages or fires, allowing occupants to evacuate safely. The 10-second timeframe is critical because delays longer than this could significantly increase the risk of injuries or complicate the evacuation process. It helps ensure that emergency lighting systems are reliable and meet safety standards, thereby promoting a reactive safety response in critical moments.