Which type of luminaires requires additional safety support due to failure risks?

Pendants and chandeliers require additional safety support due to their design and the potential risks associated with their installation. These types of luminaires are often suspended from the ceiling, meaning they are at a greater risk of falling if not adequately secured. The weight of these fixtures, along with their hanging nature, makes it vital for them to be properly supported to prevent accidents, particularly in situations where they are suspended by chains, rods, or cables.

The NEC emphasizes that hanging luminaires must be supported in a manner that can withstand the weight and any dynamic loads, which includes the potential for movement caused by wind or vibrations. Therefore, additional safety measures such as using mounting brackets and ensuring the support structures are securely anchored are critical for maintaining safety and structural integrity.

Other types of luminaires, such as wall sconces, recessed lights, and ceiling flush mounts, are typically more securely affixed to their mounting surfaces and do not carry the same level of risk associated with falling that suspended fixtures do. Thus, the additional safety support needs for pendants and chandeliers are imperative and aligned with NEC safety standards.