In Class III locations, under what condition are general purpose grounding-type receptacles allowed?

In Class III locations, which are characterized by the presence of easily ignitable fibers or materials, the use of general-purpose grounding-type receptacles is specifically permitted under the condition of having moderate accumulations of these materials, provided the area is accessible for cleaning. This allowance is fundamentally tied to safety protocols that prioritize minimizing the risk of ignition from electrical equipment.

The reasoning behind this condition stems from the nature of Class III locations, where airborne fibers can pose fire hazards. If the accumulation of fibers is moderate, it indicates that there isn't a high density of potentially ignitable materials surrounding the receptacle. Additionally, ensuring that the area is accessible for cleaning means that maintenance can help manage and mitigate any risks associated with fiber accumulation, thus maintaining a safer operational environment.

Other conditions mentioned in the choices, such as extensive accumulation of fibers or no restrictions on receptacle type, would increase potential fire hazards significantly. Furthermore, while jurisdictional authority may provide regulations and guidelines, it does not inherently dictate the safety measures regarding the specific installations related to receptacles in these locations. Therefore, requiring that any area where general-purpose grounding-type receptacles are utilized must be manageable with respect to fiber presence ensures compliance with safety standards. This approach ensures that the environment remains as safe as