Industrial Lighting Energy Best Practices

Quick Answer: What Is Industrial Lighting?

Industrial lighting refers to heavy-duty light fixtures designed for warehouses, factories, manufacturing plants, and other high-demand work environments. Unlike standard commercial or residential lighting, industrial fixtures are built to withstand harsh conditions — extreme temperatures, dust, moisture, vibration, and continuous operation. The most common types include high bay lights, vapor tight fixtures, LED strip lights, and explosion proof lighting. LED is now the industry standard, delivering the highest lumen output per watt with the longest lifespan.

• High bay lights — for ceilings 20–40 ft; the backbone of warehouse and factory lighting
• Vapor tight fixtures — for wet, dusty, or corrosive environments like food processing and car washes
• Explosion proof lights — for hazardous locations with flammable gases or dust (Class I/II environments)
• LED strip lights — for low ceilings, assembly lines, and supplemental task lighting

High Bay LED Lights

High bay lights are the most common industrial fixture. They're designed for ceiling heights of 20–40 feet and deliver powerful, downward-focused illumination across large open spaces. Two main styles dominate: UFO high bays (round, compact, 360° heat dissipation) and linear high bays (rectangular, ideal for aisle-style layouts). Most modern high bays range from 100W to 320W LED and are wattage-selectable, dimmable, and compatible with occupancy sensors. Best for: warehouses, factories, gyms, distribution centers, and big-box retail.

Vapor Tight Fixtures

Vapor tight lights are fully sealed against moisture, dust, and corrosive particles — rated IP65 or higher. The housing is typically a gasketed polycarbonate or aluminum enclosure with no gaps for contaminants to enter. They're the standard choice for food processing plants, car washes, parking garages, cold storage, and any wet or washdown environment. Available in 2-foot, 4-foot, and 8-foot lengths.

Explosion Proof Lighting

Required by code in Class I (flammable gases/vapors) and Class II (combustible dust) hazardous locations, explosion proof fixtures are engineered to contain any internal arc or spark within the fixture housing — preventing ignition of surrounding atmosphere. Common in oil refineries, chemical plants, grain storage, paint spray booths, and mining operations. These are among the most specialized and regulated industrial fixtures available.

LED Strip & Linear Lights

Industrial LED strip lights and linear fixtures provide bright, even illumination at lower mounting heights (under 20 feet). They're ideal for assembly lines, machine shops, workbenches, loading docks, and supplemental aisle lighting in warehouses. Available in 4-foot and 8-foot lengths, with linkable designs for continuous row lighting.

Low Bay Lights

Low bay fixtures are the industrial counterpart to high bays for ceiling heights under 20 feet. They distribute light more broadly with a wider beam angle, making them suitable for fabrication shops, auto repair centers, storage areas, and mezzanines. Generally range from 40W to 150W LED.

1. Ceiling Height

This is the single most important factor. Ceilings 20 feet and above require high bay fixtures — low bay or strip lights simply can't deliver adequate foot-candles at that distance. Ceilings under 20 feet use low bay or linear fixtures. Mixed-height facilities may need both. Measure from the floor to the lowest obstruction (beams, ducts) — not just the structural ceiling.

2. Required Foot-Candles (Light Level)

Different tasks require different light levels. OSHA and IES standards provide minimums: general warehouse storage needs 10–30 foot-candles; assembly work needs 50; fine inspection or machine work needs 75–100. Use a lighting calculator or consult a lighting expert to determine how many fixtures you need to hit your target uniformly across the space.

3. Environment & IP Rating

Wet, dusty, or chemically exposed environments require appropriate ingress protection. IP65 keeps out dust and low-pressure water jets (suitable for most industrial environments). IP66/67 handles high-pressure washdowns (food processing, car washes). Hazardous locations (flammable gases, combustible dust) require UL-listed explosion proof or intrinsically safe fixtures regardless of IP rating.

4. Color Temperature

For most industrial applications, 5000K (daylight) is the standard recommendation. It promotes alertness, improves contrast for safety and quality control, and most closely resembles natural daylight. In some environments — cold storage, certain manufacturing processes — 4000K (neutral white) is preferred. Avoid warm temperatures (2700K–3000K) in industrial settings as they reduce visual acuity.

What type of lighting is best for industrial use?

LED high bay lights are the best choice for most industrial applications. They deliver 120–180 lumens per watt, last 50,000–100,000 hours, require no warm-up time, and work in extreme temperatures. For wet or corrosive environments, LED vapor tight fixtures are preferred. For hazardous locations with flammable gases or combustible dust, UL-listed explosion proof LED fixtures are required by code.

How many lumens do I need for a warehouse?

A typical warehouse requires 10–30 foot-candles (108–320 lux) for general storage and movement. For picking and packing areas, 30–50 foot-candles is recommended. To calculate lumens needed: multiply the square footage of the area by the target foot-candles, then account for fixture spacing and mounting height. A 10,000 sq ft warehouse targeting 30 foot-candles typically requires 8–12 high bay fixtures depending on wattage and mounting height.

What is the difference between high bay and low bay industrial lighting?

High bay fixtures are designed for ceilings 20 feet and above, using focused beam angles to deliver lumens over greater distances. Low bay fixtures work best for ceilings under 20 feet, spreading light more broadly. Using a high bay in a low-ceiling space creates glare and hotspots; using a low bay in a high-ceiling space results in inadequate floor illumination.

What is explosion proof lighting and when is it required?

Explosion proof lighting is a category of fixture engineered to contain any internal electrical arc or spark within the housing, preventing ignition of flammable or explosive surrounding atmospheres. It is required by the National Electrical Code (NEC) in Class I (flammable gas/vapor) and Class II (combustible dust) hazardous locations. Common applications include oil refineries, chemical plants, grain elevators, paint spray booths, and mining operations. Fixtures must be UL 844 listed for the specific hazardous location class and division.

How long do industrial LED lights last?

Quality industrial LED fixtures are rated for 50,000–100,000 hours of operation at L70 (the point at which output drops to 70% of original). At 16 hours of daily operation, a 50,000-hour fixture lasts approximately 8–9 years before needing replacement. This compares to 10,000–20,000 hours for metal halide and 30,000–50,000 hours for fluorescent T5HO — making LED the longest-lasting option by a significant margin.