Article 410 requires that luminaires not be installed closer than how many inches from the nearest wall?

According to Article 410 of the National Electrical Code, luminaires must be installed at least 12 inches away from the nearest wall. This requirement is in place to ensure proper air circulation around the luminaire, which helps to prevent overheating and potential fire hazards. The distance also allows for adequate light distribution and reduces the chance of creating unintentional shadows that could obstruct visibility.

Maintaining this separation ensures the luminaires can function efficiently and safely within a space. It's important for professionals in the electrical field to understand and adhere to these installation requirements to enhance safety and effectiveness in lighting design.