In electrical terms, what does 'Dwelling Unit' refer to?

The term 'Dwelling Unit' specifically refers to a type of residential establishment where people live. This includes apartments, houses, condominiums, and similar living arrangements that are designed for individuals or families to reside in. The term is used in the context of electrical installations and codes to define the requirements and standards necessary for residential electrical systems. Understanding this concept is crucial for ensuring that electrical work adheres to safety regulations and the specific needs of residential living spaces. In contrast, the other options relate to different kinds of buildings or purposes that do not focus specifically on residential living, thereby distinguishing 'Dwelling Unit' within its proper context.