Egress Learning Center
Class I Div 1 vs Div 2 for Emergency Lighting — What Changes?
Class I Div 1 vs Div 2 comes up anytime you’re specifying emergency lights or EXIT signs in gas/vapor areas. This guide breaks down where each division applies, what listings...
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Class, Division & Group — Plain-English Primer for Emergency Lighting
Class/Division/Group (plus T-codes) is the language AHJs use to decide what can be installed in hazardous areas. If you’re choosing emergency lights, EXIT signs, or combos for a classified space,...
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T-Codes (Temperature Ratings) for Explosion-Proof Egress Fixtures — Plain-English Guide
T-codes tell you the maximum surface temperature a fixture can reach so it won’t ignite the surrounding atmosphere. In hazardous areas, your emergency lights and EXIT signs must be both...
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AHJ Inspections in Hazardous Areas — What Inspectors Check for Egress Lighting
AHJ inspections in hazardous areas focus on two things: equipment that won’t ignite the atmosphere and egress systems that still perform during an outage. This guide shows facility managers and...
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Wastewater Treatment Hazardous Egress Lighting — Practical Guide (UL 844 • UL 924)
Wastewater treatment plants demand egress lighting that meets emergency performance and avoids becoming an ignition source. This guide helps facility managers and electrical contractors specify and deploy explosion-proof emergency lights,...
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Class II (Dust) Emergency Lighting for Grain Mills & Silos — Practical Guide
Class II dust environments—like grain mills, silos, elevators, and conveyors—need egress equipment that won’t ignite suspended or layered dust and still delivers UL 924 emergency performance. This plain‑English guide helps facility...
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Chemical Plant Explosion-Proof Exit Signs & Emergency Lights — Practical Guide (UL 844 • UL 924)
Chemical plants need egress equipment that won’t ignite flammable atmospheres and still delivers UL 924 emergency performance. This guide shows facility managers and electrical contractors how to choose and deploy explosion‑proof...
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Oil & Gas Hazardous Egress Lighting — Practical Guide (UL 844 • UL 924)
In oil & gas facilities, egress lighting must do two things at once: meet emergency performance requirements and avoid becoming an ignition source. This guide shows facility managers and electrical...
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Remote Heads in Hazardous Areas — When & How to Use
Remote heads extend emergency egress lighting into classified spaces while keeping batteries/electronics where it makes the most sense. This guide explains when to choose hazardous‑location remote heads, how to power...
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Maintenance Tips for Explosion-Proof Exit Signs & Emergency Lights
Explosion-proof EXIT signs and emergency lights protect people in classified areas—so keeping them maintained isn’t optional. This guide gives facility teams and electrical contractors a practical, field-ready maintenance plan: what...
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Hazardous-Location Exit/Light Combos vs Separate — When to Use Each
Hazardous-location egress can be covered by a single explosion-proof exit/light combo or by separate exit signs and emergency lights. This guide compares both approaches in plain English—when a combo simplifies...
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Installing Explosion-Proof Emergency Lighting: Step-by-Step
Explosion-proof emergency lights are built to prevent ignition in classified atmospheres while delivering code-required egress illumination. This step-by-step guide walks electrical contractors and facility teams through the whole job—planning, mounting,...
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