What type of equipment is addressed in Article 490?

Article 490 of the National Electrical Code (NEC) specifically addresses equipment that operates at over 1000 volts nominal. This article provides guidelines and requirements for high-voltage installations, ensuring safety and compliance with standards for electrical systems that exceed this voltage threshold.

Understanding the unique characteristics and safety concerns associated with equipment over 1000 volts is crucial for professionals in the field, as these systems require specialized equipment, installation practices, and maintenance procedures to mitigate risks associated with high voltage. This includes considerations for insulation, protection against faults, and appropriate grounding methods to ensure the safety of both workers and the general public.

By focusing on the specifications defined in Article 490, individuals working with high-voltage systems can ensure they adhere to industry standards and maintain the safety and reliability of electrical systems in various applications.