What type of extension is mentioned in Article 382?

The correct answer highlights that Article 382 specifically addresses Nonmetallic Extensions as a type of extension. In the context of the National Electrical Code (NEC), nonmetallic extensions are utilized to provide additional space for electrical circuits while offering the benefits of resistance to corrosion, lighter weight, and ease of installation compared to their metallic counterparts.

Nonmetallic materials are often used in environments where moisture or chemicals could corrode metal components, which enhances the safety and longevity of electrical installations. These extensions are designed to protect conductors and cables while allowing for flexibility in routing.

Understanding the specific materials and configurations mentioned in the NEC is vital for compliance and ensuring safe electrical installations. This makes the term "Nonmetallic Extensions" particularly important in the field, as it emphasizes the considerations that electricians must account for when planning and executing electrical work, especially in varying environmental conditions.