What is the focus of Article 665?

Article 665 of the National Electrical Code specifically addresses dielectric heating equipment. This type of equipment is designed for processes like cooking or material processing where dielectric heating principles are applied, utilizing high-frequency electromagnetic fields to heat materials without direct contact.

Understanding this focus is essential for those working with various heating technologies and ensuring that installations meet safety standards specific to dielectric heating. This includes guidelines related to installation, equipment ratings, and safety requirements, which are critical to safely operating equipment used in industrial and commercial settings.

The other choices, while relating to different areas of electrical equipment, do not align with the specific provisions outlined in Article 665, which is solely concerned with dielectric heating devices and their safe application in electrical installations.