Which NEC article covers Armored Cable (AC) installation?

• A. Article 400
• B. Article 320
• C. Article 314
• D. Article 330

Answer: (B)

Armored Cable installation is governed by the NEC article that specifically covers Type AC cables. That article sets the rules for what counts as AC cable, how the armor is used, and how to install it safely—covering securing and supporting the cable, bending requirements, terminations into enclosures, and grounding considerations. This focus distinguishes it from other cable types handled in different articles, such as flexible cords (covered by a separate article) and metal-clad cable (which has its own article). By recognizing that Type AC has its own dedicated article, you apply the correct installation rules for armored cable rather than those for other wiring methods.