Which NEC article covers Metal-Clad Cable (MC) installation?

• A. Article 320
• B. Article 410
• C. Article 600
• D. Article 330

Answer: (D)

Metal-clad cable has its own NEC article because its metal sheath and construction require specific rules for how it’s installed, terminated, and grounded. The article dedicated to metal-clad cable covers what types of MC cable are permitted, how it must be supported and protected from damage, the correct connectors and terminations, and how the sheath is bonded or grounded as part of the electrical system. This focused guidance ensures safe, reliable use of MC cable in fixed installations and distinguishes it from other wiring methods that have their own separate rules. The other topics mentioned—armored cable, lighting fixtures, and signs—address different subjects and aren’t about the installation requirements for MC cable, which is why they aren’t the correct reference.