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Conductor identification wrapper

Why you care (60 seconds)​

Clear conductor identification prevents miswiring and speeds up troubleshooting. Inspectors often flag mismatched or missing identification, especially in multi-circuit panels.

Where people lose time​

  • Reworking circuits because conductors were not identified consistently.
  • Forgetting to re-identify conductors when they are repurposed.
  • Mixing color conventions across a project or system.

This is​

The rule in plain language​

Identify grounded, ungrounded, and equipment grounding conductors using approved methods so their purpose is clear at every termination.

When it applies​

Any time conductors are installed in systems with multiple circuits, voltages, or conductor types.

What you must do (checklist)​

  • Apply proper identification for grounded conductors and equipment grounds.
  • Label or mark ungrounded conductors in multi-voltage systems.
  • Re-identify conductors when permitted and required by the installation.
  • Maintain consistent identification from source to load.

Quick examples​

  • Use green or green-yellow for equipment grounding conductors.
  • Apply labeling to distinguish circuits in a shared raceway.

This is not​

Common misreads​

  • Assuming color alone is enough for complex systems without labeling.
  • Treating re-identification as allowed in every situation.

What it doesn't cover​

  • Complete wiring method requirements for every system type.
  • Project-specific color standards from owners or engineers.

False friends​

  • A taped conductor is not valid if the code or listing disallows it.

Exceptions & edge cases​

  • Re-identification rules vary by conductor size and insulation type.
  • Some systems require tagging at multiple points, not just in panels.

Cross-references (NEC map)​

  • Primary: 200.6, 210.5
  • Secondary: 250.119

Exam traps​

  • Ignoring identification requirements on multi-wire branch circuits.
  • Assuming all colors are allowed without checking the rule.

Field notes​

  • Standardize a project color legend early and share it with crews.
  • Use printed circuit labels instead of hand-written tape when possible.

AHJ / Local amendments notes (placeholder)​

  • Add local amendments or interpretations here.

Revision notes​

  • Draft wrapper created for conductor identification fundamentals.

Related

Prerequisites

Related wrappers and playbooks