A beginners guide to hazardous location(hazloc) lights

Tarkan
Jun. 27, 2019
The way that we talk about hazloc lights can be confusing for someone to understand who has just no idea what we are talking about. That's okay though, I am here to break it down. Let's start with what is a hazloc light? Hazloc lights are what he calls lights that are designed to be used in areas with possible fire or explosion risks due to explosive atmospheres and/or mixtures. Why would I need a hazloc light? A hazloc light is important because it is designed, tested and certified to work in the appropriate explosive environment. It is designed, tested and certified to work in the appropriate explosive environment. How do I know the difference between hazloc lights? That is where it can get more confusing. The U.S. and Europe have two different ways to classify light products. Europe uses a process of zones. Each zone describes a different kind of hazardous area. For example, zone 0 is an area where explosive gas is in the atmosphere for long periods of time or all the time, but zone 22 where explosive dust is unlikely to be in the atmosphere. For example, our round series light is able to handle zone 2, zone 22, or zone 23 in European standards, depending on the material that is in the atmosphere. The U.S. is different though, we use a process of classes and divisions. The classes work like this, class I is gasses, class II is dust and class III is fibers. All three of these have a high chance of being explosive or harmful to the products if there is too much of it within the atmosphere. Divisions determine whether or not the gas is in the air most of the time. Division 1 is when the item, determined by the class, is in the air all of the time. Division 2 is when the item is not normally present in the atmosphere. For example, the Linear Tuff series is class I, Division 1, so it is explosion proof. This system allows for overlap between systems, for example, our Linear Tuff series light, which is a class I, division 1 light, is a zone 0, and 1 hazloc light in Europe.  How do I know how durable my hazloc light is? The IP codes on hazloc lights are what determines how protective their outer shell is against water and dust. The first number is the protection from solid objects accessing the LED, starting at 0 for large objects and ending at 6 for being completely dust proof. The second number in the IP code represents how waterproof the shell is. Starting from 0 providing no protection from water, and 9k meaning it can take the force of steam jet cleaning. As an example, our high bay hot series has an IP67, meaning it is completely dustproof and can be immersed underwater for a short period of time. That is the basis for the classification of hazloc light fixtures. If you would like to learn more we have a pdf on our website that goes more in-depth on hazloc light classifications