Hazardous location compliance ties together area classification, equipment marking, installation practice, and traceable records across the equipment lifecycle.
This article highlights considerations for Stainless vs Aluminum Ex Enclosures: Trade-offs under equipment certification themes. It is educational and not a substitute for project-specific standards, certificates, or AHJ rulings.
The equipment level of protection (EPL) must match or exceed the hazardous area: Ga/Gb/Gc for gas, Da/Db/Dc for dust, per IEC 60079-14 installation assumptions.
Surge protection, lightning bonding, and cathodic protection interfaces must not introduce sparking or compromise enclosure flame paths.
Maintenance per IEC 60079-17 and repair per IEC 60079-19 preserve the type examination assumptions; undocumented field changes void compliance.
Map your equipment EPL and type of protection to the classified area, then verify installation conditions of use, cable entries, grounding, and maintenance intervals. Keep declarations and certificates version-controlled.
If your team needs a second opinion on markings, drawings, or a certification gap analysis, HazloLabs can help scope the next steps.