Industrial lighting is preferably mounted at a height between 6 and 12 meters, depending on the application, the type of fixture, and the desired illuminance at working surface level. There is no universal standard: the correct mounting height for industrial fixtures depends on factors such as the hall size, required lux values, and the beam angle of the fixture. The following sections cover the most frequently asked questions about lighting height in industry.
What factors determine the correct mounting height?
There isn't a single answer to the question of how high industrial lighting should hang. The correct mounting height is the result of a combination of factors: the desired illuminance on the work surface, the beam angle of the fixture, the dimensions of the space, and the presence of obstructions such as cranes or installations. They directly influence each other, and if you ignore one factor, the rest of the calculation will also be incorrect.
The key factors at a glance:
- Light distribution and beam angle: A narrower beam angle requires a greater mounting distance to achieve a sufficiently wide illuminated surface. Luminaires with a wide beam angle perform better at lower heights.
- Lumens output of the fixture: The higher the fixture is hung, the more lumens are needed to achieve the same illuminance at working plane height. The light intensity loss increases quadratically with distance.
- Presence of tools and machinery: In halls with high machines, cranes, or forklifts, the mounting height must be coordinated with the maximum driving height of equipment and with visibility for operators.
- Glare and visual comfort Low-mounted, high-lumen fixtures cause direct glare. The height must be adjusted to the employees' eye level and the fixture's beam angle.
- Maintenance access In practice, accessibility also plays a role. Light fixtures that hang too high in difficult-to-reach structures increase maintenance costs and downtime.
By LED work lights for machinery different rules apply than for general hallway lighting. Here, the position relative to the work object is more decisive than the absolute mounting height.
What are the recommended lux levels per industrial application?
European standards EN 12464-1 (indoor) and EN 12464-2 (outdoor) specify the required illuminance levels for different situations. For corridors and storage areas, 100 to 200 lux is generally sufficient, while precision production work requires 500 lux or more. The mounting height also influences how many lumens a luminaire must deliver to achieve these values.
Global guideline values per environment:
- Storage areas and aisles: 100 to 200 lux at floor level.
- General production areas: 200 to 300 lux at work surface height (approx. 0.85 meters above the floor).
- Accurate production and assembly work: 500 to 750 lux, sometimes supplemented with task lighting.
- Inspection and Quality Control 1000 lux or more, depending on the detail size.
- Outdoor areas and riding routes: 20 to 50 lux at lane level, with higher values at loading and unloading areas.
- Crane operators and aerial platform operators Specific standards depending on the task, also considering contrast and shadow effects.
The lux value on the work surface is the end result of the combination of lumen output, mounting height, reflection from ceilings and walls, and the light distribution angle of the fixture. A lighting calculation clarifies whether the chosen combination meets the standards.
How do you calculate the optimal ridge height for an industrial hall?
The optimal mounting height is calculated by combining the required illuminance value on the work surface with the luminaire's lumen output, light distribution curve, and the ambient reflection values. In practice, lighting simulation software such as DIALux or Relux is used for this purpose.
A simplified approach works as follows: first, determine the desired illuminance (lux) and the surface area to be illuminated. Then, use the photometric data of the luminaire to calculate how many luminaires are needed at what height and spacing. As a rule of thumb, the spacing between luminaires in high-bay applications (above 8 meters) should not exceed 1 to 1.5 times the mounting height to ensure uniform illumination.
Would you like to know more about how lumen values translate to practical lighting performance on-site? Then check out the page on Luminous flux and lumens for a technical background.
What happens if industrial lighting is hung too high or too low?
An incorrect mounting height has direct consequences for both lighting performance and workplace safety. If lighting is hung too high, the illuminance on the work surface drops significantly due to the square of the distance loss of light. The result is insufficient lux levels, uneven lighting, and higher energy costs because more or more powerful luminaires are needed. If the lighting is hung too low, glare, shadows, and safety risks arise.
Specifically, an incorrect mounting height means:
- Too high Insufficient lux on the work surface, dark spots, increased risk of errors and accidents, higher energy bills due to compensation with extra fixtures.
- Too low: Direct glare for employees, risk of mechanical damage from equipment, unacceptably high luminance in the field of vision, and reduced visual comfort.
In environments with cranes, forklifts, or other moving machinery, an excessively low mounting height also poses a physical safety risk. The luminaires can be struck by equipment, leading to damage and downtime. Therefore, correct industrial lighting height is not only a matter of lighting performance but also operational safety.
Are there different requirements for outdoor lighting on industrial sites?
Outdoor lighting for industrial sites requires a different approach than indoor lighting. The mounting height of luminaires on poles is typically between 6 and 20 meters, depending on the site size, activities, and desired lighting uniformity. Additionally, light pollution for the surroundings and full-cutoff requirements play an important role.
Specific considerations for outdoor areas:
- Light obstruction and scattering: Fixtures on large industrial sites must meet requirements for light emission into the surrounding environment. Full-cutoff fixtures prevent light from being emitted upwards or sideways.
- Mast distance and height: Taller masts illuminate a larger area per mast, but require more powerful fixtures. The ratio between mast height and spacing determines uniformity.
- Weather resistance Outdoor lighting must be resistant to wind, rain, dust, and temperature fluctuations. The IP and IK classification here the fixture is decisive.
- Site-specific activities Higher lux requirements apply at loading and unloading areas, port facilities, or construction sites than at general access roads.
More information on the specific requirements for industrial site outdoor lighting help determine the right combination of pole height, luminaire type, and light distribution.
When is a professional lighting design mandatory or necessary?
A professional lighting design is legally required when an installation must comply with specific safety standards, such as in ATEX zones, emergency lighting situations, or for new construction requiring a building permit. Beyond these legal obligations, a professional design is highly recommended for any industrial environment where lighting directly impacts safety and productivity.
Situations where professional design is necessary, even without a legal requirement:
- Halls with a clear height above 8 meters, where standard calculation rules are insufficient.
- Environments with extreme conditions such as high temperatures, corrosion, or explosion hazards.
- Locations with changing activities requiring different lux levels in the same space.
- Projects requiring substantiation for energy performance, payback period, or subsidy applications.
- Outdoor areas with multiple masts where light uniformity and light pollution must be ensured.
An lighting design based on photometric simulation not only ensures compliance with standards but also prevents costly retroactive corrections. The investment in a solid design pays for itself through lower installation costs and better performance over the installation's lifespan.
Examples from practice: DFDS Terminal Lighting
A good example of how mounting height and fixture choice come together in practice is the project for DFDS—a large Ro-Ro terminal where lighting had to meet demanding operational requirements. The challenge lay in combining a high lux value on the driving and walking work surface with minimal glare for drivers and port employees working on and around trucks.
The poles were placed at a carefully calculated height to evenly illuminate both the driveways and the loading and unloading platforms, without light pollution towards the surroundings. This required full-cutoff luminaires with a specific light distribution curve, tailored to the pole spacing and the width of the lanes. At the same time, the installation had to withstand the salty sea air and changing weather conditions, leading to the choice of luminaires with a high IP rating and corrosion-resistant housing.
An important lesson from this project: mounting height alone is not sufficient if the light distribution does not match the site layout. The combination of height, beam angle, and mast spacing must be calculated as a whole, not as separate parameters. This insight is directly applicable to any industrial outdoor area where multiple activities occur simultaneously. More practical examples can be found at the projects page.
How JEL Products Helps Determine the Correct Mounting Height for Industrial Lighting
The mounting height of industrial lighting is not just a minor detail: it is a technical decision that directly affects safety, energy consumption, and working conditions. JEL Products offers industrial organizations a comprehensive approach to finding the right lighting solution, including the optimal mounting height for every type of environment.
What JEL Products offers in this regard:
- Professional lighting design based on photometric calculations for your specific location and activities.
- Fittings from our own production, designed for extreme conditions such as high temperatures, corrosion, or explosion hazards.
- Guidance from engineering to installation and commissioning, including masts and foundations for outdoor locations.
- Advice on standards, certifications, and potential subsidy or financing opportunities.
Whether it's a production hall, an outdoor area, or an environment with special requirements — we'll think along with you from the first technical question. Feel free to contact us via contact page for a no-obligation discussion about the lighting height and fixture selection that suit your situation.