Which aspect must be ensured when installing luminaires with reflectors and lenses?

When installing luminaires with reflectors and lenses, it is crucial to ensure that they enhance light distribution while also prioritizing safety. This is because reflectors and lenses play a significant role in directing and distributing light effectively, which can greatly affect the performance of the lighting system. Proper light distribution is important to achieve the desired illumination levels while reducing glare and improving visibility.

Additionally, safety considerations are paramount; the materials and design of these components must prevent overheating, electrical hazards, and other potential risks. A well-designed luminaire with reflectors and lenses not only optimizes the efficiency of light distribution but also ensures that the installation adheres to safety standards outlined in codes and regulations.

While aspects such as interchangeability, obstruction of the light source, and the materials used are important, the primary focus should be on the combination of optimal light distribution and safety, making the correct choice about enhancing light distribution and ensuring safety vital for successful installation.