Yes, emergency lighting inverters can provide backup power to multiple fixtures. These inverters are designed to supply power to various lighting fixtures during a power outage, ensuring that critical areas remain illuminated for safety and compliance with building codes. The capacity of an emergency lighting inverter to support multiple fixtures depends on its power rating, which is measured in watts or kilowatts. 
When selecting an inverter, it is crucial to ensure that its total output capacity can handle the combined load of all connected fixtures. This involves calculating the total wattage of the fixtures and ensuring it does not exceed the inverter's capacity. Emergency lighting inverters can be centralized, providing power to an entire building or specific zones, or decentralized, serving individual fixtures or smaller groups.
Centralized systems are often more efficient for larger buildings, as they can manage multiple fixtures from a single location, simplifying maintenance and testing. They can also be integrated with building management systems for enhanced control and monitoring. Decentralized systems, on the other hand, offer flexibility and can be more cost-effective for smaller installations or specific areas requiring independent operation.
Inverters can be configured to work with various types of lighting technologies, including LED, fluorescent, and incandescent fixtures. They ensure that the lighting remains operational for a specified duration, typically 90 minutes, as required by safety standards. Proper installation and regular maintenance are essential to ensure the reliability and effectiveness of the emergency lighting system.