Which is a common source of ignition in hazardous locations?

Electrical equipment is considered a common source of ignition in hazardous locations because it can generate sparks or heat during normal operation or due to malfunction. In environments where flammable gases, vapors, or dust are present, any electrical device—ranging from motors and switches to lighting fixtures—can pose a risk if it is not designed or installed according to the necessary safety standards.

Electrical equipment can create arcs or sparks during switching operations, and heat produced by electrical components can also ignite flammable materials if the equipment is not properly maintained or if it operates outside of its design specifications. This makes it crucial for electrical equipment used in hazardous areas to be rated for explosive atmospheres and to be installed with features designed to minimize the likelihood of ignition.

While flammable gases, open flames, and chemical reactions can all be sources of ignition, they are not as pervasive or integral to the operations of hazardous locations as electrical equipment, which is often found in proximity to potential ignition sources.