What article would you refer to for guidelines on premises-powered systems?

The correct reference for guidelines on premises-powered systems is Article 840. This article specifically addresses the installation and maintenance of premises-powered systems within the framework of electrical code. Premises-powered systems typically involve the wiring, components, and methods for systems powered by energy generated on-site, focusing on safety and operational standards to ensure compliance with regulations.

Article 840 outlines the requirements regarding the design and implementation of such systems, including the types of materials and construction practices that are suitable. This provides electricians and supervisors with a comprehensive set of criteria for ensuring that installations are both safe and efficient.

Understanding and referring to Article 840 is essential for ensuring that premises-powered systems operate reliably and within legal guidelines, thus protecting both the installer and the end-users. The other articles listed speak to different areas of electrical installation and do not specifically cover the premises-powered systems aspect.