Regardless of the type of emergency lighting system, every device is connected to the building's power supply and charges its internal battery continuously. There are emergency lighting standards requiring high occupancy residential buildings, such as hotels and dormitories, and new commercial buildings to feature such devices to ensure a more secure and safe environment. It switches on automatically in case a building experiences a power outage. > Sport Clubs Electric Vehicle Charger GrantsĪn emergency light is a battery-powered device.Sport Clubs Electric Vehicle Charger Grants.