What is the requirement for receptacle placement in accessory buildings with floors located at or below grade level?

In the context of accessory buildings with floors at or below grade level, the provision related to them not being habitable is significant because it aligns with the NEC guidelines intended to ensure safety and appropriate use of electrical systems. Accessory buildings that are not designated for habitation can include structures such as sheds, garages, or storage buildings, where the risks associated with electrical installations are reduced due to the lack of occupancy.

By stating that these buildings must not be habitable, the NEC emphasizes that specific electrical safety measures, such as outdoor receptacle placement or requirements for weatherproofing, are not necessarily mandated in the same way they would be in a habitable structure. This reflects the understanding that accessory buildings serve different purposes and risk levels compared to homes or places of business, allowing for potentially less stringent wiring and receptacle placement requirements.

While the other options present important considerations such as the need for outdoor receptacles to be weatherproof in exterior locations, the central requirement regarding the habitability of these buildings sets the foundational rule that dictates the more relaxed expectations for electrical installations in accessory structures.