Must-Know Emergency Lighting Requirements

Emergency and exit light requirements mandate active lights on exit routes and in essential equipment storage rooms. They must be illuminated to at least 54 lux and exit lights are often required to be red. In the case of a power outage or other emergency, lights must be hardwired and have a backup power system. Consult your community fire marshal for local emergency lighting standards.

Structures require emergency exit lighting at any location necessary to guide people to safety as quickly and safely as possible.

According to the IBC, non-residential buildings must have active lighting for exit routes, also known as egress lighting, whenever the building is occupied. A building’s exit routes consist of the following:

• Exit accesses, such as the corridors, escalators or ramps that people take to a fire-resistance rated stairway
• Protected travel to the exit discharge, such as a stairway leading out of the building
• Exit discharges that lead directly outside or to a refuge area with outdoor access, such as the door at the bottom of the stairway

In addition, the IBC requires emergency lighting in some rooms not used for egress, such as spaces that contain generators, fire pumps and electrical systems.

According to the NFPA, some structures can be exempt from the emergency lighting requirements, including:

• Structures not routinely occupied by people
• Towers designed for use by fewer than three people at once that include an escape ladder
• Buildings only occupied in daylight hours that have adequate natural light to illuminate safe exit pathways

OSHA requires adequate and reliable illumination for all exit routes of buildings or structures. OSHA exit sign requirements include:

• Escape routes must have the word “Exit” in plainly legible letters at least six inches high and 3/4 inches wide.
• Exit signs must be illuminated to at least 54 lux (5.01 foot-candles) and be distinctive in color. Some local building codes require the lettering to be red.
• Exit route doors must be free of decorations or signs that obscure visibility.
• Doorways or passages along an escape route that could be mistaken for an exit must be marked “Not an Exit” or have signage, such as “Closet.”

OSHA requires that emergency lighting allows an employee with normal vision to be able to see along the exit route. Emergency lighting must emit at least 1.07 lux (0.1 foot-candles) of light along the emergency exit path at floor level.

Commercial buildings with OSHA violations or failures to adhere to NFPA standards can be subject to financial penalties. A willful code violation that results in the death of a worker can incur penalties up to $250,000. Other code violations can incur smaller penalties.

Emergency lighting and signage must be bright enough to be visible in case of power outage or smoke. If the electricity goes out, emergency lights must operate for a minimum of 90 minutes, according to the NFPA. In addition, the electrical supply must provide power within 10 seconds of the loss of normal power.

Egress lighting must be “hardwired,” or served by the building’s primary electrical supply. In addition, there must be a backup. Options for the emergency system include:

• On-site generators
• Battery-operated systems
• Internal battery backups for individual lights and signs

Internally illuminated exit signs, such as ones using photoluminescence, can be alternates to signs that rely on batteries.

Emergency lighting systems must be designed so that the failure of any individual lighting element, such as a burned-out bulb, will not leave any space requiring emergency illumination in total darkness.

Emergency lighting should have frequent and thorough inspections to ensure the lights and signage will not fail when needed. According to NFPA, the emergency listing system should have a combination of monthly and annual tests.

The three types of testing options are:

• Manual testing with written records
• Automatic testing with computer-based self-testing lighting system
• Automatic testing with self-diagnostic battery-operated lighting equipment

The monthly inspections should include the following:

• Ensure lighting is installed according to code
• Inspect equipment for physical damage
• Conduct 30-second push test
• Check illuminated lamps and ensure they are aimed in correct direction
• Maintain monthly inspection log

The yearly inspections should include the following:

• Complete examination of unit
• Complete 90-minute test of battery and lighting system
• Check battery condition, voltage and manufacturer date
• Check AC/DC lamps or bulbs for damage and proper operation
• Ensure charging circuit is functioning properly
• Apply emergency lighting test label to each light after test completion

Pro Tip: Some defective batteries will have enough charge to light a bulb for several seconds but quickly lose power. A 30-second test provides a more accurate assessment.

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