How many lumens are required for emergency lighting?

16 Apr.,2024

 

Emergency lighting—lighting designed to identify and light up passageways, stairwells, and exits to ensure safe and organized evacuation from a structure during an emergency—is required for the vast majority of structures, whether commercial, industrial, public, private, educational, medical or otherwise.

But determining the placement, number, and type of emergency lights required is a complex matter, largely dependent on the nature and layout of your building in conjunction with the requirements of NFPA’s 2018 Life Safety Code 101, Section 7.9.

Read on to learn more about the basic requirements of this code.

It’s More about Where than “How Many”

To answer the question asked by the title of this article, one should instead ask “Where do I need emergency lighting.”

The regulations have more to do with ensuring sufficient lighting along the path of egress in any structure, rather than assuming that a certain number of lights would be adequate.

Thus, the size and layout of your building, the location of corridors, stairways, and doorways leading to exits and the exits themselves, will all determine where emergency lighting is needed.

This, along with the length of the corridors and the size of rooms and open spaces, will determine how many are needed in each area to provide sufficient lighting for safe and orderly evacuation during failure of power and normal lighting.

Understanding the Basics Behind Emergency Lighting Requirements

Here are the basics of 2018 NFPA 101, Section 7.9.2, which dictates that:

  • Emergency lighting systems must be arranged in such a way as to provide an initial illumination of no less than an average of 1 foot-candle along the path of egress as measured at floor level.
  • After the emergency system has been on for 1.5 hours, the light may decline to an average of 0.6 foot-candle along the path of egress, but at no point should it become less than 0.1 foot-candle.
  • Emergency lighting must be supplied for all exits and paths of egress to those exits.

An important point for sake of understanding the above – one foot-candle means that one lumen is provided per square foot.

There are numerous other regulations regarding emergency lighting that are important to know, but the above basic points are the primary ones that will determine how many lights you will need to install in your specific structure.

Essentially, along paths of egress and exits, every square foot of floor must be lit by an average of approximately one lumen (i.e. – one foot-candle). Clearly, depending on the type and strength of emergency lights you purchase and install, as well as the size and layout of your space, you will need a fair number of lights.

Obviously, the process of measuring the space and identifying the coverage provided by the emergency lights you purchase, as well as ensuring you appropriately identify all pathways in need of emergency lights, is a complex and tedious process. But you do not have to navigate it alone.

Let the Pro’s Help

Compliance with NFPA’s and your AHJ’s regulations is important, not just so that you can avoid fines, but so that those working in and occupying your building are kept as safe as possible.

It is also important to ensure the emergency lighting system is regularly maintained to ensure they perform as intended. The experts at Koorsen can help keep your facility safe with regular inspections, service, and replacement of lights if needed. Give Koorsen a call today for all your emergency and exit light needs.

 

An actual emergency isn’t the time to learn your lights aren’t working as expected.

Unfortunately for many companies, the quality of their emergency lighting isn’t something they think about a whole lot. Fortunately for you, this provides an excellent opportunity to educate your customers on the latest emergency lighting technology – and how it can make a crucial difference when needed.

Lately, emergency lighting has risen to the top of many companies’ to-do lists, and for good reason. Power outages from severe weather have doubled in the past twenty years. Not to mention we now have to consider breakdowns in our nation’s aging electricity infrastructure or interruptions from solar flares!

In short, periodic power outages are becoming a fact of life.

Meanwhile, keeping the lights on, in every sense, is essential for business continuity and employee/customer safety. Companies will be looking to you for guidance on the choice of fixtures, placement, battery life, regulations, and other specifications.

This article will help you become better-informed on emergency lighting and what options are available, so you can provide your customers with the information they need to make a smart decision. We’ll look at:

  • The regulations you need to know about and why.
  • What to look for when planning and choosing emergency light fixtures (standard “bug-eye” lights aren’t always the best option).
  • New options you may not have considered – but that can significantly improve safety in a facility.

(Or, if you just want to take a look at our lighting products, they’re over here.)

Let’s dive in!

Who Makes and Enforces the Rules

There are several governing bodies responsible for setting codes and enforcing the requirements for emergency lighting in commercial facilities:

  • The U.S. Occupational Safety and Health Administration (OSHA) ensures the safe and healthful working conditions for workers by setting and enforcing standards, and by providing training, outreach, education and assistance. Employers must comply with all applicable OSHA
  • The National Fire Prevention Association’s (NFPA) Life Safety Code is the most widely used source for strategies to protect people based on building construction, protection, and occupancy features that minimize the effects of fire and related hazards.
  • The International Building Code (IBC), developed by the International Code Council (ICC), has been adopted for use by most U.S. jurisdictions. It preserves public health and safety by providing safeguards from hazards associated with the built environment.

Each entity has specific codes that relate to emergency lighting. IBC codes, for instance, specify the Means of Egress Illumination in an emergency, covering the required lumens at the walking surface, which areas must be illuminated (such as corridors, aisles and exit access stairways and ramps), and the duration of emergency lighting.

Aside from the codes from these “big three,” local authorities in some jurisdictions may have additional codes or regulations that must be followed. Customers whose facilities aren’t in compliance face the risk of being fined (or worse), so they will appreciate your expertise in recommending the right commercial emergency lights.

The Problem With Standard Emergency Lighting

We’re all familiar with the standard emergency light fixture (often call the “bug-eyes” light kit) that many organizations use. Mounted on the wall, it is basically just a battery unit wired into the building that provides 90 minutes of light when the power goes out. It doesn’t throw a lot of light because it doesn’t have to; the minimum one-foot candle is enough. One typical use for such a fixture is a hallway that leads to an emergency exit light over a door.

But hallways aren’t the only space you’ll find in most commercial facilities, so why should that be the only emergency lighting? For example:

  • In an open-plan office, the beam from a wall-mounted light can be obstructed by cubicle walls, filing cabinets, columns or equipment, making navigating to the exit more hazardous.
  • Hospital corridors can be filled with equipment carts or IV stands and need to be navigated by people in wheelchairs or on gurneys. Add the panic effect when alarms are sounding, and safe egress gets even trickier.
  • When power fails in a large space, like a warehouse, it can be hard to navigate long, tall aisles to find the closest exit. 

Why Overhead Emergency Lights Are Needed

Your goal is to make a safe environment for people in the event of an emergency and to make it as easy as possible for them to navigate their way out – in any space.

Oftentimes, the best way to accomplish that is with ceiling mounted emergency lights or by equipping overhead lights with emergency batteries. As a result, the client gets emergency lighting that most closely resembles normal lighting conditions.

Why is this so important? It’s because not all building occupants will be familiar with the emergency egress pathways.

Think about it: In spaces like hospitals, hotels, recreational facilities or stores, visitors come and go all day long – and they don’t know the precise floor plan of the building. Odds are, they don’t even know where the floorplan maps are located. And that can be a big problem.

When Lights Go Out, Panic Can Set In

What no business wants is a situation that causes panic in employees or visitors. The conditions that spur panic have been closely studied and what has been learned can help you design an emergency lighting plan that counters the circumstances that can trigger panic.  

Heide (2004) identified panic triggers in the interplay of:

  • The victim perceiving an immediate threat of getting entrapped in an enclosure space.
  • Escape and exit routes appearing to be rapidly closing.
  • Flight seeming to be the only way and the last resort to survive.
  • No one is available to help.

Almeida, E. et al (2008) point out that if people have to leave a building in the event of fire occurring and they are not familiar with the building structure well enough, they run for the exit they used as an entrance, even if other exits are much easier to reach or even safer.

People can get disoriented in their surroundings and resort to “herding” behavior, a human group dynamic visible in emergency situation. To put it simply, when people feel panic, they may start acting non-logically and their ability to decide on their own volition can be minimized, if not entirely lost.

A well-designed emergency lighting scheme that illuminates paths of egress and guides people to the closest exit is the prescription to alleviate panic, disorientation, or herding. That’s why it’s so important to understand how the facility is used, and by whom, before planning out which emergency lighting solutions to recommend to your customers.

Commercial Emergency Lighting Solutions to Keep Your Customers Safe

In addition to knowing how the facility is used and by whom, you’ll need to know the lay of the land. You may be working with grid ceilings, drywall, or open ceilings with fixtures mounted to rafters.

You’ll want to have multiple options available to you to fit the LED emergency light to the needs of the customer’s space and the demands of occupant safety.

High-Bay Emergency Lighting

In high ceiling applications (greater that 25’), such as warehouses or large retail centers, customers will need more power to deliver sufficient light to the surfaces below. In those cases, an LED emergency light designed for high ceilings, like this one from Litetronics, is an ideal fit:


 

The unique, patent-pending design enables compatibility across a range of input voltages, from 120V to 480V without the use of a step-down transformer. Installation is simple and routine testing is made convenient via monthly self-testing function or manual remote control. It can also be mounted as high as 40’, while still delivering sufficient light to an area below, making it the perfect emergency solution for high ceiling applications.

  • It automatically switches to battery power during a power outage
  • Using only 30W, it delivers 4,000 lumens for 90 minutes.
  • It can also be set to 21W for 120 minutes of emergency light at 2,800 lumens if that is all that is needed to allow safe egress.

Emergency Backup Battery

An emergency backup battery option makes it easy to outfit a building that doesn’t already have emergency lighting. You don’t have to run wiring to new lights, just add a backup battery to an existing fixture. This gives you the flexibility to choose how many fixtures to convert while providing a better quality of emergency light.

You’ll want to have plenty of battery backup options to outfit a range of fixtures, like this LED emergency battery backup from Litetronics.


 

This 10W battery backup unit delivers emergency power to a wide range of Litetronics standard LED panels, troffers, strips and retrofits. In the event of a power outage, it supplies the connected fixture with 90-minutes of light, enabling sufficient visibility for occupants to safely exit the space. The EB10 cycles through self-testing on a monthly basis, ensuring it’s always ready for action. In addition, an indicator light module displays color-coded lights that show the current operational status of the unit. The 10W models are suitable for lower ceiling spaces and the 20W model is for high-bay fixtures.

Additional Safety Features

Look for these capabilities that take reduce maintenance demands and ensure the client’s emergency lighting is always ready when needed:

Self-testing LED Emergency Lighting

LED lights are known for their long, maintenance-free life, but testing is still vital when it comes to emergency lighting. Litetronics’ lights and batteries come with an automatic monthly self-testing function that is complemented with a status indicator light to show if it’s fully charged, in emergency mode, or about to run out of juice. Manual testing via optional remote is an add-on you may want to offer.

LED Surge Protection

Power outages aren’t the only concern for customers. Electrical storms can bring the dual threat of a power outage and a power surge—potentially damaging tens of thousands of dollars of LED lights. Choosing fixtures equipped with surge protection will ensure your emergency lighting systems are safe and can continue to provide light when needed.

 

Help Customers Be Prepared With the Right Commercial Emergency Lighting

No one wants to think about emergency preparedness, but everyone wants to be prepared.

That’s where you come in.

Talk with your customers about how they use the spaces in their facilities, what ceiling heights and room layout mean for LED emergency light placement, who the occupants are likely to be, and any other safety concerns they may have.

Having options in emergency lighting solutions to offer will allow you to meet their needs and give them confidence that when outages happen, everyone will be able to get out safely.

Your lighting manufacturer should be in the business of giving you these options. Our Guide to LED Lighting Manufacturers will help you choose a partner that allows you to meet your customers’ lighting needs, for every day and emergencies.

How many lumens are required for emergency lighting?

Emergency Ready: A Contractor’s Guide to Commercial Emergency Lights