Which article covers the requirements for the protection of secondary conductors in transformers?

The correct reference for the protection of secondary conductors in transformers is found in Article 240.4. This article specifically addresses overcurrent protection and provides guidelines for the protection of conductors, including those for secondary conductors from transformers. The focus here is on ensuring that conductors are adequately protected from overcurrent situations which could lead to equipment damage or fire hazards.

Article 240.4 outlines the general requirements for overcurrent protection and its relevance to various types of conductors and systems, ensuring that proper measures are taken to maintain electrical safety and system integrity. Understanding this article is crucial for ensuring that secondary conductors, whether they are feeding a separate circuit or providing power to specific equipment, are protected in accordance with code requirements.