Which article provides guidance for NM cable installation?

• A. Article 334: Nonmetallic-sheathed cable (NM).
• B. Article 320: Armored Cable (AC) usage and installation.
• C. Article 310: Conductors for general use: ampacity, insulation, and temperature ratings.
• D. Article 240: Overcurrent protection: sizing and protecting conductors and devices to prevent overheating.

Answer: (A)

The guidance for installing NM cable is found in the article dedicated to nonmetallic-sheathed cable. This article specifically covers how NM cable should be installed—securing and supporting the cable, the locations it’s allowed in, protection from physical damage, and related installation rules. That focused scope makes it the best source for NM installation guidance. The other articles address different cable types or topics (armored cable installation, general conductors and ampacity, overcurrent protection), which do not provide NM-specific installation instructions.