What is a condition for track lighting installation?

For track lighting installation, one of the key conditions is that it must not be in wet or damp locations. This requirement is important because track lighting fixtures and their electrical components are not designed to withstand exposure to moisture, which could lead to electrical failures or hazards.

The National Electrical Code emphasizes ensuring that lighting fixtures are suitable for the environment in which they are installed. Since track lighting typically consists of various fixtures connected along a mounted track, if these fixtures were exposed to moisture, there could be significant risks such as short circuits or even fire hazards.

In contrast, the other options do not reflect the proper guidelines for track lighting. For example, track lighting can indeed be used for functional lighting beyond mere decorative purposes, and it is not restricted to commercial buildings, as it is commonly found in residential settings too. Furthermore, while there are certain locations where track lighting can be installed, the condition against installation in wet or damp environments stands as a critical safety requirement.