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The correct answer is based on the stipulations set forth in the National Electrical Code (NEC), particularly in Article 411, which covers lighting systems powered by low voltage. Article 411 defines specific parameters for lighting systems that operate at a maximum of 30 volts and are typically classified as class 2 circuits.

In the context of power supply ratings, the maximum current allowed for lighting circuits under this article is 25 amps. This specification ensures that the systems are designed safely, preventing overheating and potential fire hazards. The rating of 25 amps applies effectively to systems that adhere to the low voltage limitations and safety considerations outlined in the NEC.

It's important to note that although other current ratings appear in the options, none comply with the established standards for the maximum rating under Article 411. Understanding these limitations is essential for ensuring safe installation practices within electrical systems, particularly in lighting applications.