What type of equipment is included in Article 665?

Article 665 of the National Electrical Code (NEC) specifically addresses the requirements for induction and dielectric heating equipment. This type of equipment utilizes electromagnetic fields to generate heat within materials, which is critical for processes such as cooking, melting, or curing substances without direct contact. The focus of Article 665 is on ensuring safety and proper installation practices for these particular heating methods, which can involve significant electrical loads and special maintenance considerations.

The other equipment types mentioned in the other choices fall under different NEC articles. Electric welders, for example, are covered under Article 630, which addresses the specific requirements and safety measures related to welding operations. Information Technology Equipment is typically referenced in Article 645, pertaining to data processing and networking applications. Lastly, pipe organs are not covered under the NEC as a distinct category related to electrical installations but instead may fall under general provisions for electrical systems in buildings.

Thus, the primary focus of Article 665 on induction and dielectric heating equipment clearly distinguishes it as the correct choice in relation to the question posed.