ICC Fire Plans Examiner Practice Exam 2026 – Complete Prep Resource

The required emergency power duration mentioned in fire codes is typically set at 90 minutes. This duration is crucial for ensuring that emergency lighting, exit signs, and other fire safety systems remain operational during a power outage, particularly in the aftermath of an emergency like a fire.

The rationale for this time frame is grounded in the need to facilitate safe evacuation from buildings. In many jurisdictions, fire codes mandate that emergency power systems be capable of supporting essential functions for 90 minutes to allow occupants to find their way to exits safely, navigate potential hazards, and ensure that emergency services can safely enter the building if necessary.

By adhering to this standard, fire codes strive to enhance overall safety in emergency situations, minimizing the risk of injury or loss of life due to inadequate illumination or operational emergency systems when they are needed most.