Emergency lighting is lighting that automatically illuminates exit paths and key areas when normal power fails, so occupants can see to evacuate safely, and building and life-safety codes generally require it along exit routes and in specified areas of commercial and public buildings. Powered by a backup source, emergency lighting activates during an outage, which is exactly when it is needed. Understanding what it is and where it is required helps building owners meet their life-safety obligations.

Here is what emergency lighting is and where it is required.

Where emergency lighting is required is set by building and life-safety codes and varies by occupancy and jurisdiction, so always confirm the specifics with a licensed electrician and your local authority.

What emergency lighting is

Emergency lighting is lighting designed to illuminate automatically when normal power is lost, providing enough light for occupants to see and evacuate safely. It runs on a backup power source, such as batteries or an emergency power system, so it comes on during an outage. Unlike regular lighting, its purpose is specifically life safety during a power failure or emergency, not everyday illumination.

How it differs from exit signs

Emergency lighting and exit signs are related but distinct. Exit signs are illuminated signs that mark the exits and the path to them, while emergency lighting illuminates the path itself and key areas so people can see where they are going. Together they form the building’s means-of-egress lighting, and both are typically required, as covered in our article on commercial emergency and exit lighting.

Where it is generally required

Building and life-safety codes generally require emergency lighting along the means of egress, the routes people use to exit, and in certain other areas. Commonly specified locations include:

• Exit access and exit routes, such as corridors and aisles leading out
• Stairways used for egress
• Exit discharge, the path from the exit to a public way
• Certain rooms and areas depending on occupancy, such as large assembly or windowless spaces

The precise locations depend on the building’s occupancy type and the applicable codes, which define where egress lighting must be provided.

Why it is required there

Emergency lighting is required along exit routes and in these areas because that is where people need to see to get out safely during an emergency. If power is lost during a fire or other event, exit paths and stairways can become dark and dangerous, so keeping them illuminated is critical for safe evacuation. The requirement focuses on the egress path because that is the route to safety [INTERNAL LINK: /services/electrical-repair “electrical repair”].

It must be maintained and tested

Because emergency lighting is a life-safety system that only proves itself during a power loss, codes generally require it to be maintained and periodically tested to confirm it works. A building owner is responsible for keeping emergency lighting functional, which means regular testing and prompt repair of any failures. A licensed electrician can install, test, and maintain emergency lighting to keep a building compliant and safe.

Emergency lighting is lighting that automatically illuminates exit paths and key areas when normal power fails, running on backup power so occupants can evacuate safely. Building and life-safety codes generally require it along the means of egress, corridors, stairways, exit discharge, and certain areas depending on occupancy. It must be maintained and tested to ensure it works, and a licensed electrician installs, tests, and maintains it.

Stella Electric installs, tests, and maintains emergency lighting for businesses across the Baltimore area and throughout Maryland, with flat-rate pricing and no overtime charges. If your building needs emergency lighting, we can help. Financing is available on qualifying projects.