---
title: Electrical Equipment Labeling
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description: >
When to use: Identification labels, nameplates, warning signs, panel directories, and color-coding for electrical distribution equipment and wiring rated 600V and below and for medium-voltage equipment served by the same project — switchgear, switchboards, panelboards, transformers, motor control centers, disconnects, automatic transfer switches, junction boxes, raceways, and conductors. Covers arc-flash warning labels driven by the arc-flash study, voltage-class and system color coding (normal, emergency, critical, standby, fire alarm, security), panelboard circuit directories, disconnecting-means identification, available fault current marking, and conductor and conduit identification.
− Not intended for: Telecommunications and structured cabling identification per ANSI/TIA-606 and BICSI (touched on by [[syncs/telecommunications-bonding]]); building automation control point tagging and instrumentation tag schemas (a separate controls scope); mechanical equipment nameplates and pipe labeling under ASME A13.1; as-built drawings, room signage, or wayfinding; and life-safety code occupancy signage governed by the building code rather than the electrical code.
+ Not intended for: Telecommunications and structured cabling identification per ANSI/TIA-606 and BICSI (touched on by [[sync/telecommunications-bonding]]); building automation control point tagging and instrumentation tag schemas (a separate controls scope); mechanical equipment nameplates and pipe labeling under ASME A13.1; as-built drawings, room signage, or wayfinding; and life-safety code occupancy signage governed by the building code rather than the electrical code.
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## The remaining requirements in this standard make those code-mandated labels consistent, durable, and useful — they should be readable a decade after installation, in the lighting and posture conditions an electrician actually encounters in the field. {note}
−## This standard works with, and depends on, the output of the project's arc-flash study; arc-flash label content is established by the analysis performed under [[syncs/arc-flash-study]], and the requirements here govern the physical label that delivers that content to the worker. {note}
+## This standard works with, and depends on, the output of the project's arc-flash study; arc-flash label content is established by the analysis performed under [[sync/arc-flash-study]], and the requirements here govern the physical label that delivers that content to the worker. {note}
−## Coordinate equipment scope with [[syncs/low-voltage-switchgear]], [[syncs/low-voltage-switchboards]], [[syncs/low-voltage-panelboards]], [[syncs/medium-voltage-switchgear]], [[syncs/motor-control-centers]], [[syncs/transformers]], [[syncs/generators]], and [[syncs/automatic-transfer-switches]]; conductor identification coordinates with [[syncs/conductors-and-cables]], and conduit identification with [[syncs/raceways-and-conduit]]. {note}
+## Coordinate equipment scope with [[sync/low-voltage-switchgear]], [[sync/low-voltage-switchboards]], [[sync/low-voltage-panelboards]], [[sync/medium-voltage-switchgear]], [[sync/motor-control-centers]], [[sync/transformers]], [[sync/generators]], and [[sync/automatic-transfer-switches]]; conductor identification coordinates with [[sync/conductors-and-cables]], and conduit identification with [[sync/raceways-and-conduit]]. {note}
## This standard does not cover telecommunications and low-voltage data cabling labels, which follow ANSI/TIA-606 administration standards and the project's BICSI scope; it does not cover building automation point tagging schemas; and it does not cover mechanical pipe labeling under ASME A13.1. {note}
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## Coordination with the Arc-Flash Study {toc}
−### Arc-flash warning labels shall not be ordered or installed before the arc-flash study under [[syncs/arc-flash-study]] is complete and the protective device settings used in the calculation have been verified as installed.
+### Arc-flash warning labels shall not be ordered or installed before the arc-flash study under [[sync/arc-flash-study]] is complete and the protective device settings used in the calculation have been verified as installed.
### Labels populated with calculation results from a draft study, or from assumed device settings, are not valid and shall not be used.
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## Arc-flash warning labels shall be installed on switchboards, switchgear, panelboards, industrial control panels, meter socket enclosures, motor control centers, and any other equipment likely to require examination, adjustment, servicing, or maintenance while energized, in accordance with NEC 110.16(A) and NFPA 70E 130.5(H).
−## The content of each arc-flash label is the output of the arc-flash study performed under [[syncs/arc-flash-study]]; this standard governs the physical label. {note}
+## The content of each arc-flash label is the output of the arc-flash study performed under [[sync/arc-flash-study]]; this standard governs the physical label. {note}
## Label Content {toc}
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### Where the failure is traced to environmental conditions exceeding the label's UL 969 listing, the Contractor and the Engineer shall coordinate selection of a replacement material rated for the actual conditions, and the replacement shall be performed at no cost to the Owner if the original selection failed to account for known conditions.