Explosion Proof Lighting Explained by a Professional Engineer | Classes, Divisions & Certifications

In this Commercial LED technical discussion, Peter Kohlert, PE, a Michigan Licensed Professional Engineer with more than 40 years of engineering experience in industrial facilities, hazardous-location lighting, and photometric design, explains explosion proof lighting and the technical considerations involved in selecting fixtures for hazardous locations.
The discussion covers how hazardous locations are classified, including Class I, Class II, and Class III environments; Division 1 and Division 2 applications; and Groups A-G. Peter explains how the presence of flammable gases and vapors, combustible dusts, and ignitable fibers affects hazardous-location classifications and lighting requirements.
The discussion also examines UL, ETL, FM, and CSA safety marks and certifications, along with UL 844 and other standards used for hazardous-location luminaires. Peter explains how fixture nameplates, specification sheets, Certificates of Compliance (CoCs), and other certification documentat...

In this Commercial LED technical discussion, Peter Kohlert, PE, a Michigan Licensed Professional Engineer with more than 40 years of engineering experience in industrial facilities, hazardous-location lighting, and photometric design, explains explosion proof lighting and the technical considerations involved in selecting fixtures for hazardous locations.

The discussion covers how hazardous locations are classified, including Class I, Class II, and Class III environments; Division 1 and Division 2 applications; and Groups A-G. Peter explains how the presence of flammable gases and vapors, combustible dusts, and ignitable fibers affects hazardous-location classifications and lighting requirements.

The discussion also examines UL, ETL, FM, and CSA safety marks and certifications, along with UL 844 and other standards used for hazardous-location luminaires. Peter explains how fixture nameplates, specification sheets, Certificates of Compliance (CoCs), and other certification documentation can be used to verify whether a fixture is appropriate for a particular application.

Additional topics include:

• What explosion proof lighting means
• Class I, Class II, and Class III hazardous locations
• Division 1 vs. Division 2
• Hazardous-location Groups A-G
• Zone classifications
• UL, ETL, FM, and CSA safety marks
• U.S., Canadian, and international certification considerations
• How to read explosion proof fixture nameplates and specification sheets
• Explosion proof mounting options and accessories
• Emergency battery backup options
• Different types of explosion proof luminaires and their applications
• Lighting design considerations for hazardous environments

Commercial LED Lights represents seven explosion proof lighting manufacturers with more than 180 fixtures and mounting accessories. Our team combines technical product guidance with in-house photometric lighting design to help contractors, facility managers, engineers, and industrial customers properly specify lighting for hazardous-location applications.

Learn more about explosion proof lighting:
https://commercialledlights.com/led-safety-lights/explosion-proof-lights/

Learn more about Peter Kohlert, PE:
https://commercialledlights.com/about/peter-kohlert/

Need help selecting or designing a hazardous-location lighting system?
https://commercialledlights.com/request-photometric