How does Article 410 specify marking requirements for luminaires?

Article 410 of the National Electrical Code (NEC) emphasizes the importance of marking luminaires with specific information to ensure safety and proper usage. This requirement is primarily intended to provide critical details such as wattage and voltage, which are essential for both installers and end-users to ensure that the luminaire is compatible with the electrical system it is connected to. This marking helps prevent overloading the circuit and reduces the risk of electrical hazards, as using a luminaire with the incorrect voltage or wattage can lead to failures or even fires.

Marking luminaires with installation instructions alone does not adequately inform users about the necessary electrical parameters and could lead to unsafe installations. Likewise, the absence of any marking would leave users without essential information for safe operation. User reviews, while they may provide insights on performance and satisfaction, do not address the technical and safety aspects that markings like wattage and voltage fulfill. Thus, it's clear that marking luminaires with detailed electrical specifications is crucial for compliance with safety standards and effective operation.