Good afternoon, and welcome to Mighty Line Minute. Today, we’re returning to NFPA 101, the National Fire Protection Association’s Life Safety Code®, to discuss illumination of the means of egress, including emergency lighting. We’ll explain why it matters and how safety and operations professionals can help protect occupants during an emergency.

When normal lighting fails, occupants must still find their way to safety. Fires, power outages, and other emergencies can increase confusion, falls, injuries, and evacuation delays. Emergency lighting helps occupants navigate corridors, stairs, and designated egress routes when normal power is unavailable.

NFPA 101 establishes illumination requirements based on building occupancy and use. Healthcare facilities, for example, have additional considerations because some occupants may need assistance evacuating.

Emergency lighting requirements apply to designated portions of the means of egress, including applicable exit access corridors, stairways, and exit passageways. Building owners, operators, engineers, and safety professionals should evaluate the entire egress route, not just areas near exit doors.

The Code generally requires an initial illumination level of at least one foot-candle along applicable egress walking surfaces, subject to specified minimum levels over time. Where required, emergency lighting must operate for at least 90 minutes following the loss of normal power. Always consult the applicable Code edition and occupancy-specific provisions.

Exit signage is equally important. Signs must be visible, properly located, and illuminated or designed as required by the Code. Emergency lighting helps occupants see where they’re going, while exit signs show them where to go.

Lighting and signage are only part of an effective means of egress. Exit routes must also provide adequate width and capacity for the expected occupant load. In warehouses and manufacturing facilities, stored materials, equipment, and temporary obstructions can compromise evacuation routes. Regular inspections help identify these hazards before an emergency occurs.

When designing a new facility or upgrading an existing building, consider whether an inverter-based emergency lighting system is appropriate. Unlike conventional, decentralized fixtures—often called “bug-eye” lights—inverter systems provide centralized emergency power to distributed lighting fixtures. This approach can offer greater flexibility in fixture selection and placement.

Depending on their configuration, emergency power systems may also support other loads. Applicable standards may include NFPA 70, the National Electrical Code; NFPA 101, the Life Safety Code; NFPA 111, Stored Electrical Energy Emergency and Standby Power Systems; and UL 924 for emergency lighting and power equipment. UL 1008 may apply to transfer switches. Qualified design and electrical professionals should verify requirements for each installation.

Many warehouses and manufacturing plants also use photoluminescent tape, signs, and markings to provide additional guidance along designated egress routes. These materials absorb light and glow in darkness, helping occupants recognize pathways and follow evacuation routes.

Remember, photoluminescent markings supplement required emergency lighting; they do not replace it. They also require an appropriate light source for charging. Facilities should regularly inspect, test, and maintain emergency lighting systems according to applicable codes and standards.

For specific requirements, consult the applicable edition of NFPA 101 and relevant electrical and emergency power standards. Pay particular attention to occupancy requirements, illumination levels, system duration, exit signage, and testing procedures.

At Mighty Line, we offer floor striping, photoluminescent materials, and signage to supplement your facility’s safety and egress program. These products can help identify designated routes and important safety locations as part of a properly designed and maintained life-safety system.

Thanks for joining us for another episode of Mighty Line Minute. Stay safe—and have a great day!