According to the NEC, non-power limited circuits may operate with voltages as high as what?

According to the National Electrical Code (NEC), non-power limited circuits can operate with voltages up to 600 volts. This is established in Article 725 of the NEC, which outlines the requirements for Class 1, Class 2, and Class 3 circuits. Non-power-limited circuits fall under Class 1, which can include various installations that require higher voltage levels and are not subject to the same constraints as power-limited circuits.

The classification of circuits based on their voltage handling capabilities is essential for ensuring safety and compliance with electrical standards. Circuits that exceed this voltage level may require different materials and approaches to safely manage higher voltage applications, which is why understanding the limits set by the NEC is crucial for electrical professionals.