Article 668 pertains to which type of equipment?

Article 668 of the National Electrical Code (NEC) specifically addresses the installation requirements for electrolytic cells. These cells are used in various applications, including electroplating and electrolysis processes, where an electric current is utilized to drive a chemical reaction.

The purpose of having a dedicated article for electrolytic cells is to ensure safe installation and operation of the associated electrical equipment. It includes provisions for grounding, equipment ratings, and circuit protection tailored to the unique characteristics and risks associated with these devices.

This specialization is crucial because electrolytic processes can involve highly reactive substances and can produce dangerous gases, thereby necessitating additional safety considerations beyond those typically applied to general electrical installations. Understanding the specific requirements outlined in Article 668 is essential for anyone working with this type of equipment to ensure compliance with safety standards and best practices.