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Class 1 Div 2 LED Lighting

Class 1 Div 2 LED Lighting fixtures are explosion rated lighting. They work in explosive environments where hazardous conditions are sometimes present. Conditions include high concentrations of flammable combustible vapors, liquids or gases. Class 1 Division 2 Lighting is perfect where hazardous conditions exist only some of the times. For example, opening up a vessel for repair releases hazardous gas or dust.

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Frequently Asked Questions

There’s a lot of questions around Class 1 Div 2 LED lighting, so we asked our customers what questions they wished they had answered before they made a purchase. Scroll below to find answers to our most common questions or call (888) 423-3191 to speak with a lighting expert.

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Before You Buy
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Fixtures and Fittings
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What Is Class 1 Div 2 Lighting?

Class 1 Div 2 LED Lighting fixtures are explosion rated lighting. They work in explosive environments where hazardous conditions are sometimes present. Conditions include high concentrations of flammable combustible vapors, liquids, or gases. You often find Class 1 Div 2 Lights outdoors and Class 1 Div 1 Lights indoors.

What Are the Benefits of Class 1 Div 2 Lighting?

Like other LED lights, explosion proof fixtures provide the same key benefits – energy saving, reduced maintenance, and improved quality of light. They also meet the certification requirements needed in a Class1 Div 2 application. Theyt will provide a safe lighting environment.

LED Explosion Proof Light Installed

Class 1 Div 2 Led Lighting

What is a Class 1 Div 2 Hazardous Area?

Class 1 hazardous areas are defined as groups. Groups are categorized by the type of material found. The most common groups are: (A) Acetylene, (B) Hydrogen, (C) Ethylene and/or Propane and (D) Propane, Butane, Methane and Benzene.

The difference between Division 1 and Division 2 is whether the hazardous environment is always or sometimes present.


Does Class 1 Div 2 Need a Seal?

UL844 Class 1 Div 2 certification is very specific about what a fixture must or must not have. If you buy a light that is tested and certified to this standard, you met the requirement. There is no concern about needing to supply an extra seal for these fixtures, it is 100% complete.

Do You Have Class 1 Div 2 Lighting in Stock?

Yes, we have Class 1 Div 2 lights in stock in our main warehouse located in Nashua, NH. We also have other products in other warehouses across the country.

What Conduit Can You Use in Class 1 Div 2?

Class 1 Div 2 rated conduit or higher. Everything in the room related to the lighting must be explosion proof rated. That includes the conduit, junction boxes and switches.

outdoor refinery lights at night


What are the best applications for Class 1 Div 2 LED lighting?

Chemical processing plants
Aircraft maintenance areas;
Enclosed fueling stations
Paint spray booths;
Offshore oil and gas rigs
Chemical storage units
Ship tanks
Oil and gas storage
Grain silos

Does ATEX Rated Count for Class 1 Div 2?

It does not. ATEX is a competing certification to the UL Standard used in other countries that are not the USA and Canada. In North America, we rely on the UL844 certification for explosion proof fixtures, not the ATEX standard.

Can I Get Away with using a Vapor Tight Fixture?

No. Never use a vapor tight fixture in place of a Class 1 Div 2 LED lighting fixture. It does not provide the certification required and will create an unsafe location.

Does Class 1 Div 2 Require Intrinsically Safe?

It does not. Class 1 Div 2 LED lighting can be either explosion proof rated or Intrinsically safe lighting. These are two different ways engineers came up with solving the same problem. The lights cannot create an explosion inside a hazardous environment.

Is IP66 Class 1 Div 2?

No. IP66 is a dust and water ingress standard. It is used to tell you how waterproof and dustproof the fixture is. Our explosion proof fixtures are also IP66 or higher rated, but that is not the standard that makes them explosion proof.

What Accessories Are Needed to Install Class 1 Div 2 Lighting?

Everything this light connects to inside the room also needs to be Class 1 Div 2 rated or higher. There are some accessories available, but they are limited due to the special nature of this fixture. Let us know what your needs are and we can identify the exact requirements you have.


Is the Cord Coming Out of the Fixture Rated Class 1 Div 2 or Do I Need to Remove It?

Most of our C1D2 LED Explosion Proof fixtures include at least a 1-foot power cord. It is intended to show how the fixture is wired. In most cases, the installation includes wiring to the driver/wiring box on the fixture.

Your local Building Inspector or Fire Marshall governs installation and wiring requirements. Please refer to them for explosion-proof fixture requirements for new installations.

If you already have fixtures installed that you are upgrading, in most cases you will be able to reuse the conduit and junction boxes. This is assuming you will be mounting the same as the current installation. The installation of explosion-proof fixtures requires no exposed bare wires.

How Do I Install Class 1 Div 2 Lights?

You should never do this by yourself. This must be done by a qualified electrician.