Which classification is required for electrical devices used near flammable liquids?

The classification required for electrical devices used near flammable liquids is explosion-proof. This designation means that the equipment is specifically designed to operate safely in environments where there is a risk of explosive hazards. Devices that are classified as explosion-proof are constructed to contain any explosive force generated within them and prevent the ignition of flammable vapors or liquids in the surrounding area.

These devices undergo rigorous testing and certification to ensure they can withstand an explosion without allowing it to escape, thereby providing a crucial layer of safety in hazardous locations where flammable liquids are present. The use of explosion-proof equipment is essential in industries such as petrochemicals, oil and gas, and pharmaceuticals, where flammable materials are common, ensuring that operations can continue without the risk of fire or explosion.