What is Explosion Proof Lighting?
Explosion Proof Lighting is a light fixture that has the unique ability, in case of an internal explosion, to contain this event inside the fixture. If a spark creates an explosion inside an explosion proof fixture, the fixture is designed not to transfer this explosion to its external environment. Explosion proof lighting is all about containment. That is why they are extremely robust fixtures with thick metal walls and glass.
Lights that are Explosion Proof rated are certified and tested and must pass a specific standards to ensure they are safe. The most common classes are Class 1 Division 1 and Class 1 Division 2.
The major difference between these two classes is the existence of combustible materials in the surrounding environment. In Class 1 Division 1 environments, these gases, vapors or materials are commonly present. In Class 1 Division 2 environments, these same explosive materials, gases or vapors are present at times but not all the time.
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