Emergency lighting is different from ordinary lighting, which includes three types: backup lighting, evacuation lighting, and safety lighting. The conversion time is determined based on actual engineering and relevant regulations. Emergency lighting is an important safety facility in modern public and industrial buildings, which is closely related to personal safety and building safety. When a fire or other disaster occurs in a building and the power supply is interrupted, emergency lighting plays an important role in personnel evacuation, fire rescue work, and the continued operation or necessary operational disposal of important production and work.

In actual construction projects, the selection of emergency lighting power supply should be based on the number of floors, scale, complexity, number of people staying and moving inside the building, production and usage characteristics inside the building, degree of fire danger and importance of the building, as well as the setting of other emergency power sources. Comprehensive consideration and technical and economic analysis should be conducted to select the optimal emergency lighting power supply.