Requirements for the identification of terminals and grounded conductors and grounded conductors in premises wiring systems are found in Article 200. Which option best identifies where these requirements are located?

• A. Article 200
• B. Article 100
• C. Article 310
• D. Article 600

Answer: (A)

Identifying conductors and their terminals is governed by a section focused on how conductors are used and identified. This is why the requirements for identifying terminals and grounded conductors in premises wiring systems are located in Article 200. That article spells out how conductors must be marked and color-coded when they terminate or splice, so everyone can clearly distinguish ungrounded conductors, the grounded conductor (neutral), and the equipment grounding conductor.

For example, it sets color-coding conventions and labeling to ensure that a neutral is recognized as the grounded conductor and that grounding conductors are identified appropriately. Other articles cover different topics—definitions and general rules in Article 100, conductor sizing and ampacity in Article 310, and signage-related provisions in Article 600—so they don’t address these identification requirements.