In which scenario is a luminaire considered permanently installed?

A luminaire is considered permanently installed when it requires tools for installation. This is because the use of tools typically signifies a more involved installation process that goes beyond simple assembly or repositioning, indicating that the fixture is intended to be securely mounted and not frequently moved or relocated. Permanently installed luminaires are designed to be part of the finish of a room or space, contributing to a fixed lighting layout.

In contrast, options that suggest a luminaire is portable or lightweight do not meet the criteria for permanence. If a luminaire is labeled as portable, it is designed for easy relocation, which conflicts with the concept of permanent installation. Similarly, the weight of the luminaire does not dictate its permanence; a lightweight luminaire could just as easily be moved around as a heavier one. Lastly, having low-voltage connections can be a design choice for both portable and fixed fixtures and does not automatically imply that a luminaire is permanently installed. Thus, only the requirement of using tools for installation aligns with the definition of permanence in electrical installations.