In Class II, Division 2 installations, why is a dust-tight cord connector required?

In Class II, Division 2 hazardous locations, a dust-tight cord connector is required primarily to protect against dust and dirt infiltration. These environments often have combustible dust present, which can ignite under certain conditions. The dust-tight design of the connector prevents dust from entering the electrical enclosure, thereby minimizing the risk of ignition sources and maintaining the integrity of the electrical components within these hazardous environments.

While aspects like compliance with electrical standards and enhancing the lifespan of the cord are certainly relevant considerations in the context of electrical installations, the vital factor for Class II, Division 2 environments remains the prevention of dust infiltration. Dust can accumulate and obstruct functioning or may create additional hazards, making the protection offered by dust-tight connectors critically important.