What type of equipment is addressed in Article 490?

Article 490 of the National Electrical Code (NEC) specifically addresses the requirements for equipment that operates over 600 volts, nominal. This section is crucial for ensuring safety and proper installation practices for high-voltage systems, which can pose significant risks if not managed according to the code.

High-voltage equipment typically includes transformers, switchgear, and other components used in industrial applications where voltages exceed the standard 600 volts. By outlining guidelines and standards for this specialized equipment, Article 490 aims to mitigate hazards related to electrical shock, fire, and equipment failure.

The other topics mentioned, such as Class I Locations, Generators, and Storage Batteries, fall under different articles of the NEC. While they are also important aspects of electrical safety and installation, they do not pertain to the high-voltage requirements specifically outlined in Article 490, making the focus on equipment over 600 volts the most accurate choice in this context.