For a production environment, the general guideline is a minimum illuminance of 300 to 500 lux on the work floor, depending on the nature of the work. For precise or visually demanding tasks, this increases to 750 lux or more. The exact recommended illuminance depends on applicable standards, the layout of the hall, and the specific work tasks being performed. This article answers the most frequently asked questions regarding lux values, standards, and lighting choices in the production environment.

What lux values apply to different tasks in a production hall?

Not every spot in a production hall requires the same light level. The recommended illuminance varies greatly depending on the type of work task: for general production work, a minimum value of 300 lux generally applies, while for precision assembly, quality control, or intricate manual labor, you quickly reach 500 to 1000 lux at the workstation itself.

The guidelines below provide a practical overview of the recommended lux levels per situation:

• Aisles and storage areas: 100 to 150 lux
• General production floor: 300 lux
• Machine operation and assembly: 500 lux
• Precise craftsmanship and quality control: 750 to 1000 lux
• Visually demanding tasks (color inspection, fine measurement): 1000 lux or more

In addition to horizontal illuminance at workbench height, vertical illuminance is also relevant, for example at machines or shelves. A good balance between ambient lighting and task lighting prevents glare and reduces visual fatigue for employees.

What standards and guidelines determine lighting requirements in industry?

The lighting requirements in industry are primarily determined in Europe by the standard EN 12464-1 for indoor lighting in workplaces and EN 12464-2 for outdoor environments. These standards specify minimum lux values, uniformity requirements, and glare limits (UGR) per type of workplace and activity.

In addition to the EN 12464 series, other frameworks also play a role in industrial contexts:

• Working Conditions Decree (Arbobesluit) Dutch legislation setting minimum lighting requirements for workplaces
• ATEX Guidelines applicable in potentially explosive atmospheres, with specific requirements for luminaire selection
• Sector-specific standards For ports, offshore, or the food industry, additional requirements may apply

The EN 12464 standard is not legislation in itself, but is widely used in practice as a technical standard. Deviating from this standard requires a well-founded justification. For lighting expertise and knowledge of standards it is advisable to consult a specialist familiar with the specific requirements in your sector.

Lux, lumen, and candela are all units of measurement related to light, but they measure different aspects of it, especially relevant in industrial lighting: * **Lux (lx):** This is a unit of illuminance. It measures how much light falls on a given surface area. Specifically, 1 lux is equal to 1 lumen per square meter (lm/m²). In industrial settings, lux is crucial for determining if a workspace has enough light for tasks like reading instructions, operating machinery, or ensuring safety. For example, a warehouse might require a lower lux level than a manufacturing assembly line where fine work is done. * **Lumen (lm):** This is a unit of luminous flux. It measures the total amount of visible light emitted by a light source in all directions. Think of it as the "brightness" or the total light output of a bulb or fixture. A higher lumen output means a brighter light source. When choosing industrial lighting, you'll look at the lumen output to understand the raw amount of light the fixture produces. * **Candela (cd):** This is a unit of luminous intensity. It measures the light output of a source in a particular direction. Unlike lumen, which measures total light output, candela focuses on the intensity of light emitted in a specific beam or angle. This is important for applications where you need to direct light precisely, such as spotlights, task lighting in specific work areas, or where glare needs to be controlled. Industrial lighting systems might use fixtures with high candela values in specific directions to illuminate important areas effectively without wasting light. **In summary for industrial lighting:** * **Lumen:** How much light the fixture *produces*. * **Lux:** How much light *lands on a surface* and what its intensity is there. * **Candela:** How much light is emitted *in a specific direction*.

Lux, lumen, and candela are three different quantities that each describe a different aspect of light. Lumen indicates the total luminous flux emitted by a fixture. Lux indicates how much of that light actually falls on a surface. Candela describes the luminous intensity in a specific direction.

A practical comparison clarifies the difference:

• Lumen (lm): the total amount of light a lamp or fixture produces, regardless of direction
• Lux (lx): the amount of light per square meter on a certain surface (1 lux = 1 lumen per m²)
• Candela (cd): Luminous intensity in a particular direction, relevant for directional lighting

For illuminance on the work floor, lux is the most relevant quantity. A luminaire with a high lumen output does not automatically deliver sufficient lux at working height, especially if the light is widely dispersed or the mounting height is considerable. You can find more background on what these values mean in practice on the page about luminous flux.

How do reflection, height, and layout affect the lux on the workplace floor?

The measured illuminance on the factory floor is strongly influenced by the mounting height of luminaires, the reflection values of walls and ceilings, and the spatial layout of the hall. A luminaire suspended at a great height spreads light over a larger area, which reduces the lux value at worker level.

Concrete factors determining effective lux on the workplace:

1. Mounting height The higher the fixture, the larger the illuminated surface area, and the lower the lux per m².
2. Reflection coefficient Light-colored walls and ceilings reflect more light and increase ambient lighting
3. Beam angle A narrow beam concentrates light onto a smaller area, a wide beam spreads it out.
4. Spacing of fixtures: An excessively large gap leads to dark zones and poor uniformity
5. Obstacles and machines Large installations cast shadows and reduce local illumination intensity.

In large production halls, such as those found in heavy industry, it is essential to choose luminaires with a suitable light distribution and sufficient lumen output to achieve the desired lux levels at the work floor. LED floodlights which are deployed for these types of environments, are specifically designed to achieve effective lighting levels even at high altitudes.

When is a lighting calculation mandatory or necessary?

A formal lighting calculation is legally required for new construction or major renovations of workspaces that involve building activities requiring a permit. Additionally, a calculation is necessary when an employer needs to demonstrate that the lighting installation complies with the requirements of the Dutch Working Conditions Decree (Arbobesluit) and applicable standards.

Even outside of legal requirements, a lighting calculation is strongly recommended in the following situations:

• When replacing conventional lighting with LED in an existing installation
• In case of changes to the hall layout, machine setup, or workstations
• In case of employee complaints about glare, shadows, or insufficient visibility
• When setting up new production zones with specific visual requirements
• When demonstrating compliance for audits, inspections, or insurance requirements

A professional lighting calculation uses software simulations (such as DIALux or Relux) and takes into account room geometry, luminaire positions, reflection values, and maintenance factors. The result is a substantiated basis for luminaire selection and placement. Via the page Lighting advice read more about how such a calculation is performed in practice.

What factors determine if LED lighting is suitable for a heavy-duty manufacturing environment?

Whether LED lighting is suitable for a heavy production environment depends on several technical factors: the degree of protection (IP and IK rating), temperature resistance, vibration resistance, and suitability for the specific environmental conditions. Standard LED luminaires are often insufficiently resistant to the conditions in heavy industry.

Relevant selection criteria for industrial LED lighting:

• IP rating determines protection against dust and moisture (for production halls, at least IP65 or IP66)
• IK rating: indicates the mechanical impact resistance, important in case of vibrations or risk of collision
• Temperature range fittings must function within the actual ambient temperature, including heat from machinery or processes
• Corrosion resistance In environments with chemicals, sea air, or humidity, special materials or coatings are required
• Light color and CRI: The color rendering index (CRI) determines how well colors are perceived, relevant for quality control.
• Ease of maintenance In 24/7 operations, long lifespan and easy replacement are crucial factors.

For environments with extreme heat, corrosion, or explosion hazards, additional requirements apply, such as ATEX certification or specific material specifications. IP and IK rating is one of the first technical parameters to check when selecting a fixture.

Real-world example: Rockwool – lighting at high temperatures

A striking example of how illuminance and fixture choice come together in a demanding production environment is the project at Rockwool. This is a manufacturer of rock wool insulation material, where the production processes involve extreme heat. The ambient temperatures around the production lines structurally rise to levels where standard LED fixtures simply fail or degrade prematurely.

The technical challenge was twofold: on one hand, the lighting had to provide sufficient lux on the shop floor around the hot production lines, and on the other hand, the fixtures had to withstand the continuous thermal load. Standard industrial LED solutions were ruled out due to insufficient temperature resistance. The design choice fell on fixtures with special thermal management and materials that can withstand prolonged exposure to high temperatures.

Operationally, there was an additional constraint: maintenance had to be minimized wherever possible due to difficult accessibility and continuous production. This made a long lifespan and high reliability of the luminaires a strict requirement. The lesson learned that directly connects to the topic of this article: achieving the correct illuminance is not just a matter of choosing the right lumen output, but also of selecting luminaires that can sustainably maintain that performance under actual environmental conditions. A luminaire that degrades due to heat after a few months will soon deliver insufficient lux on the work floor—with all the consequences for safety and work quality. More projects like this can be found at projects page.

How JEL Products Helps with Illuminance in Manufacturing Environments

JEL Products helps industrial organizations achieve the right illuminance levels in production facilities and demanding work environments. This goes beyond simply supplying lighting fixtures: it begins with a thorough analysis of the work environment and its specific requirements.

What JEL Products offers:

• Professional lighting calculations based on room geometry, mounting height, and task requirements
• Light fixtures from our own DCbright and DarkLicht brands, designed for extreme industrial conditions
• Solutions for high temperatures, corrosive environments, ATEX zones, and 24/7 operations
• Guidance from engineering and design to installation, commissioning, and maintenance
• ISO 9001 and VCA** certified working method, with a focus on safety and quality

Whether it’s a new production facility, a renovation of existing lighting, or a specific challenge in a demanding environment, JEL Products works closely with you every step of the way—from the initial technical inquiry to the completed installation. Get in touch for a no-obligation consultation on lighting levels and fixture selection in your production environment.

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