How should luminaires be oriented in relation to the floor according to Article 410?

According to Article 410 of the National Electrical Code (NEC), luminaires should be installed in such a way as to avoid exposure to direct contact with fluids or debris. This directive is crucial for safety and longevity of lighting fixtures. Ensuring that luminaires are mounted high enough, or positioned adequately, prevents the risk associated with fluid spills or the accumulation of debris, which can lead to potential hazards such as electrical shorts or physical damage to the luminaires.

This guideline is important not only for the functionality of the lights but also in maintaining the integrity of the surrounding environment and ensuring compliance with safety regulations. Proper positioning helps to mitigate risks and supports the overall performance of the lighting installation. Other factors, like height for installation or aesthetic appeal, while relevant in certain contexts, do not directly address the critical safety concerns outlined in Article 410.