Except where specifically referenced elsewhere, Article 312 does not apply to equipment operating at over ___ volts.

Article 312 of the National Electrical Code (NEC) addresses electrical equipment and installations, specifically focusing on the types of wiring methods and enclosures for conductors. The article provides important regulations and guidelines that are crucial for ensuring safety and compliance in electrical installations.

The statement that Article 312 does not apply to equipment operating at over 1200 volts is anchored in the standards that govern high-voltage installations. Equipment operating above this threshold typically requires different design and installation criteria to accommodate the unique challenges posed by higher voltages, such as increased insulation levels, spacing, and protective measures to ensure safety.

The choice of 1200 volts as the cutoff is significant as it delineates lower-voltage applications that fall under the scope of Article 312 from higher-voltage applications which are managed under other sections of the NEC. This separation allows for tailored safety measures and standards that meet the operational demands and safety requirements of higher-voltage electrical systems.

Understanding the context of why Article 312 does not apply beyond this voltage is crucial for electrical contractors and engineers, as it ensures they are adhering to the proper guidelines and ensuring safe practices in their work concerning various voltage levels found in electrical systems.