Which article would you refer to for guidelines on industrial control panels?

For guidelines on industrial control panels, Article 409 is the appropriate reference in the National Electrical Code (NEC). This article specifically outlines the requirements and standards for the safe installation, operation, and maintenance of industrial control panels, addressing aspects such as wiring, construction, and component specifications. Article 409 provides detailed information on the types of control panels, their intended use, and necessary safety measures to ensure compliant and effective operation in industrial environments.

The other articles mentioned do not cover industrial control panels specifically. Article 408 generally pertains to switchboards and panelboards, Article 410 focuses on luminaires and lighting fixtures, and Article 430 deals with motors and motor circuits. Therefore, for matters related exclusively to industrial control panels, Article 409 is the designated section within the NEC.