# Class 1 Division 2 & IR3 T5HO Fluorescent Lighting from Maes Lighting | Maes Lighting

> Discover Class 1 Division 2 & IR3 T5HO fluorescent lighting from Maes Lighting. Safe, bright, and efficient for hazardous locations. Shop now!

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Technical article

# Class 1 Division 2 & IR3 T5HO Fluorescent Lighting from Maes Lighting | Maes Lighting

Class 1 Division 2 and IR3 T5HO fluorescent lighting is designed for hazardous locations where flammable gases or vapors may be present intermittently, offering reliable illumination and safety compliance. These fixtures are ideal for industries like petrochemical plants, paint booths, and manufacturing facilities. At [Maes Lighting](https://maeslighting.com/), we provide high-performance [Class 1 Division 2 lighting](https://maeslighting.com/post/class-1-div-1-explosion-proof-lighting) and [T5HO fluorescent lighting](https://maeslighting.com/post/commercial-fluorescent-lighting-led-alternatives-guide), alongside LED alternatives, to meet stringent safety standards. This guide explores the features, benefits, and applications of Class 1 Division 2 and IR3 T5HO fluorescent lighting, plus why LEDs may be a superior choice.

## Understanding Class 1 Division 2 and IR3 T5HO Fluorescent Lighting

Class 1 Division 2 environments, as defined by the [National Fire Protection Association (NFPA)](https://www.nfpa.org), involve areas where flammable gases or vapors are present under abnormal conditions, such as leaks. IR3 ratings indicate fixtures designed for specific infrared or hazardous requirements. T5HO (High Output) fluorescent tubes deliver bright, efficient lighting for these settings. However, fluorescent technology has limitations compared to LEDs. Our [hazardous location lighting](https://maeslighting.com/post/hazardous-location-lighting-buying-guide) ensures compliance and performance.

### What Is T5HO Fluorescent Lighting?

T5HO fluorescent tubes are slim, high-output lamps that use mercury vapor and phosphor to produce bright light, typically 4,000–5,000 lumens per tube. They require ballasts and are designed for high-ceiling applications in hazardous areas. Learn more about fluorescent technology at [Lighting Design Online](https://www.lightingdesignonline.com).

## Features of Class 1 Division 2 & IR3 T5HO Fluorescent Lighting

### Safety and Compliance

Certified for Class 1 Division 2, these fixtures are constructed with explosion-proof housings to contain sparks or heat, meeting [OSHA regulations](https://www.osha.gov). IR3 ratings ensure compatibility with specific hazardous conditions. Our [Class 1 Division 2 lighting](https://maeslighting.com/post/hazardous-location-lighting-buying-guide) prioritizes safety.

### Bright Illumination

T5HO fluorescent tubes provide 4,000–5,000 lumens per tube, ideal for illuminating large areas like production floors or storage facilities. Our [fluorescent lighting](https://maeslighting.com/post/commercial-fluorescent-lighting-led-alternatives-guide) delivers reliable brightness.

### Cost-Effective Upfront

Fluorescent fixtures are generally less expensive to purchase than LED equivalents, making them a budget-friendly option for initial installations. Our [hazardous location lighting](https://maeslighting.com/post/hazardous-location-lighting-buying-guide) offers affordable solutions.

## Limitations of T5HO Fluorescent Lighting

Despite their benefits, T5HO fluorescent lights have drawbacks:

- Energy Efficiency: Fluorescent lights use up to 40% more energy than LEDs, increasing costs. [Source: Energy Star](https://www.energystar.gov)
- Lifespan: Tubes last 20,000–30,000 hours, compared to 50,000+ hours for LEDs, requiring frequent replacements.
- Mercury Content: Fluorescent bulbs contain mercury, necessitating careful disposal to avoid environmental harm.
- Maintenance: Ballasts and starters often fail, increasing repair costs.
- Light Quality: Lower CRI (70–80) and potential flickering can reduce visibility.

Explore these limitations at [Lightology](https://www.lightology.com).

## Why Consider LED Alternatives for Class 1 Division 2?

LED lighting offers significant improvements over T5HO fluorescent lights for hazardous locations:

### Enhanced Energy Efficiency

Class 1 Division 2 LEDs use up to 60% less energy than fluorescents, reducing utility bills and emissions. Our [energy-efficient LEDs](https://maeslighting.com/post/energy-efficient-lighting-switch-guide) maximize savings. Learn about LED efficiency at [LED Lighting Supply](https://www.ledlightingsupply.com).

### Longer Lifespan

LEDs last 50,000–100,000 hours, minimizing maintenance in hazardous areas. Our [durable LED lighting](https://maeslighting.com/post/industrial-led-lighting-guide) ensures reliability.

### Superior Light Quality

With CRI of 80+ and tunable color temperatures (4000K–6500K), LEDs provide vibrant, flicker-free lighting, improving safety and productivity. Our [high-CRI LED fixtures](https://maeslighting.com/products) enhance visibility.

### Mercury-Free Design

LEDs contain no hazardous materials, simplifying disposal and supporting sustainability. Our [sustainable lighting solutions](https://maeslighting.com/products) promote eco-friendly practices. Discover sustainability benefits at [PFS Lighting](https://www.lightingpfs.com/).

### Smart Control Integration

LEDs support dimming, sensors, and IoT controls for customized lighting and energy savings. Our [smart lighting solutions](https://maeslighting.com/products) offer advanced functionality.

## Applications of Class 1 Division 2 & IR3 T5HO Fluorescent Lighting

T5HO fluorescent lighting, and its LED alternatives, serve various hazardous location applications:

- Petrochemical Plants: Bright lighting ensures safety in volatile environments.
- Paint Booths: Explosion-proof fixtures prevent ignition during spraying.
- Manufacturing Facilities: Uniform illumination supports precision tasks.
- Storage Areas: Durable lighting withstands dust and vibrations.

Our [Class 1 Division 2 lighting](https://maeslighting.com/post/class-1-div-1-explosion-proof-lighting) and [hazardous location lighting](https://maeslighting.com/post/hazardous-location-lighting-buying-guide) meet these needs.

## Transitioning to Class 1 Division 2 LED Lighting

To upgrade from T5HO fluorescent to LED lighting, follow these steps:

### Evaluate Hazardous Zones

Confirm Class 1 Division 2 or IR3 requirements to select appropriate fixtures. Our [hazardous location lighting](https://maeslighting.com/post/hazardous-location-lighting-buying-guide) is certified for these zones.

### Choose LED Retrofits or New Fixtures

Select LED tubes compatible with existing fluorescent ballasts or new Class 1 Division 2 LED fixtures for maximum efficiency. Our [explosion-proof LED lighting](https://maeslighting.com/post/explosion-proof-led-lights) offers versatile options.

### Prioritize Certifications

Opt for LEDs with Class 1 Division 2, UL, or ATEX certifications and high lumen output (10,000+ lumens). Our [high-lumen LED fixtures](https://maeslighting.com/post/high-lumen-led-wall-pack-lights-benefits) meet industry standards.

### Hire Certified Installers

Engage licensed electricians to ensure compliance with [NEC standards](https://www.nfpa.org) for hazardous locations.

### Maintain Fixtures Regularly

Inspect seals, clean lenses, and check mounting hardware to maintain performance. Learn more at [Maes Lighting’s maintenance blog](https://maeslighting.com/post/explosion-proof-lighting-maintenance).

## Why Choose Maes Lighting for Hazardous Location Lighting?

At [Maes Lighting](https://maeslighting.com/), we offer both [Class 1 Division 2 T5HO fluorescent lighting](https://maeslighting.com/post/commercial-fluorescent-lighting-led-alternatives-guide) and advanced [explosion-proof LED lighting](https://maeslighting.com/post/explosion-proof-led-lights) for hazardous locations. Our fixtures meet Class 1 Division 2, IR3, and IP66 standards, ensuring safety, durability, and efficiency. With customizable solutions and expert support, we help you illuminate hazardous environments with confidence.

Ready to enhance your hazardous location lighting? Contact us at or visit [Maes Lighting](https://maeslighting.com/) for a free quote. Explore our [Class 1 Division 2 lighting](https://maeslighting.com/post/class-1-div-1-explosion-proof-lighting) today.

## Need a project review?

Share the application, operating conditions and required documentation with a lighting specialist.

[Request a quote](https://maeslighting.com/contact-us)

Common questions

## Frequently asked questions

These answers clarify the selection process without replacing project-specific documentation.

**Where does Class 1 Division 2 lighting apply?**

Areas where flammable gases or vapors are present only under abnormal conditions, as defined by the NFPA — fixtures carry explosion-proof housings that contain sparks or heat.

**What output do T5HO fluorescent tubes provide?**

Typically 4,000 to 5,000 lumens per tube, suitable for large areas like production floors — though the tubes contain mercury vapor.

**Why consider LED alternatives to T5HO fluorescents?**

C1D2 LEDs use up to 60% less energy, last 50,000 to 100,000 hours, deliver flicker-free light with CRI 80+, contain no mercury, and support dimming and sensor controls.

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Maes Lighting — nationwide supplier of certified explosion proof, industrial, high-temperature,
food-processing, vapor-tight, high-bay, flood, area, and emergency LED lighting.
Headquarters: Broken Arrow, Oklahoma. Sales: (866) 860-6399 · tjacobs@maeslighting.com
Website: https://maeslighting.com