Corpus sync: neutrality remakes, note hygiene, datasheet relocation, transformer-split cross-refs
---
title: Electrical Identification
…33 unchanged lines
## Two distinct code obligations govern electrical identification, one imposed at construction and one imposed on the owner's ongoing safety program. {note}
−### The construction obligation is the National Electrical Code (NFPA 70), which requires the design and installation team to mark equipment and identify conductors -- this is what the contract documents enforce. {note}
+### The construction obligation is the National Electrical Code (NFPA 70), which requires the design and installation team to mark equipment and identify conductors — this is what the contract documents enforce. {note}
−### The workplace-safety obligation is NFPA 70E, which governs the owner's ongoing electrical safety program -- this standard triggers the NEC marking duties at construction and provides the arc-flash label that the owner's 70E program later maintains. {note}
+### The workplace-safety obligation is NFPA 70E, which governs the owner's ongoing electrical safety program — this standard triggers the NEC marking duties at construction and provides the arc-flash label that the owner's 70E program later maintains. {note}
# Referenced Standards {toc}
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## The Contractor shall verify, before applying permanent identification, that the approved color-coding schedule has been distributed to every electrician on the project so that phase colors are applied consistently.
−## A sample installation of each identification type -- one nameplate, one conductor marking set, one conduit marker, and one arc-flash label -- shall be submitted for review before full production where required by the Engineer of Record.
+## A sample installation of each identification type — one nameplate, one conductor marking set, one conduit marker, and one arc-flash label — shall be submitted for review before full production where required by the Engineer of Record.
# Environmental and Service Conditions {toc}
−## Identification products shall be selected for the environment of each installed location; a substrate suitable for a clean indoor electrical room is not suitable for a wet, outdoor, or corrosive location. {note}
+## Identification products shall be selected for the environment of each installed location; a substrate suitable for a clean indoor electrical room is not suitable for a wet, outdoor, or corrosive location.
## Indoor, dry, climate-controlled locations may use standard-duty vinyl labels and standard black-face / white-core phenolic nameplates.
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```datasheet
−label: Phase color convention -- 208Y/120 V system
+label: Phase color convention — 208Y/120 V system
type: select
options:
- "A=black, B=red, C=blue (neutral white)"
- "A=brown, B=orange, C=yellow"
− - Other -- record in posted legend
+ - Other — record in posted legend
default: "A=black, B=red, C=blue (neutral white)"
unit:
```
```datasheet
−label: Phase color convention -- 480Y/277 V system
+label: Phase color convention — 480Y/277 V system
type: select
options:
- "A=brown, B=orange, C=yellow (neutral gray)"
- "A=black, B=red, C=blue"
− - Other -- record in posted legend
+ - Other — record in posted legend
default: "A=brown, B=orange, C=yellow (neutral gray)"
unit:
…12 unchanged lines
# Raceway and Conduit Identification {toc}
−## Raceways and conduits shall be marked so that the system they carry can be read without opening the raceway, which protects workers from mistaking a normal-power conduit for a fire-alarm, emergency, or medium-voltage run. {note}
+## Raceways and conduits shall be marked so that the system they carry can be read without opening the raceway, which protects workers from mistaking a normal-power conduit for a fire-alarm, emergency, or medium-voltage run.
## Each raceway and conduit shall be identified by a marker stating the system or service it carries, and where directional flow or feed origin matters, by a directional arrow.
…38 unchanged lines
# Equipment Nameplates {toc}
−## Distribution equipment shall carry a field-applied nameplate identifying the equipment designation, what it is fed from, and -- where applicable -- what it serves, so that the equipment can be located and isolated from the one-line drawing. {note}
+## Distribution equipment shall carry a field-applied nameplate identifying the equipment designation, what it is fed from, and — where applicable — what it serves, so that the equipment can be located and isolated from the one-line drawing.
### Factory ratings plates and motor nameplates that are integral to listed equipment are part of the equipment itself and are governed by [[sync/equipment-labeling]]; the nameplates in this section are the field-applied designation and source labels added during installation. {note}
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```datasheet
−label: Lettering height -- switchgear / switchboards / panelboards / MCCs
+label: Lettering height — switchgear / switchboards / panelboards / MCCs
type: range
unit: in
…5 unchanged lines
```datasheet
−label: Lettering height -- disconnects / starters / junction boxes
+label: Lettering height — disconnects / starters / junction boxes
type: range
unit: in
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### A directory left in pencil, or left blank "to be filled in later," is the single most common closeout deficiency and the reason maintenance crews trip the wrong breaker; a computer-printed directory is required as a closeout submittal, not merely a card-stock blank in the door. {note}
−## Each circuit shall be identified by the load it serves and the area or room it is located in; descriptions shall be specific (for example, "Receptacles -- Room 214 north wall"), not generic ("lights" or "power").
+## Each circuit shall be identified by the load it serves and the area or room it is located in; descriptions shall be specific (for example, "Receptacles — Room 214 north wall"), not generic ("lights" or "power").
## Spare overcurrent devices shall be labeled "spare" and unused spaces shall be labeled "space" so that the directory accounts for every position.
…25 unchanged lines
# Arc-Flash Hazard Labels {toc}
−## Equipment likely to require examination, adjustment, servicing, or maintenance while energized shall carry an arc-flash hazard label, so that a worker can select correct PPE and establish a safe boundary before opening the equipment. {note}
+## Equipment likely to require examination, adjustment, servicing, or maintenance while energized shall carry an arc-flash hazard label, so that a worker can select correct PPE and establish a safe boundary before opening the equipment.
### The NEC marking requirement (110.16) is a construction obligation enforced by these contract documents; the NFPA 70E label-content and label-maintenance requirements are an ongoing owner-safety-program obligation. This standard provides the label at construction; the owner's 70E program maintains it thereafter. {note}
…5 unchanged lines
## The arc-flash boundary shall be the distance at which the incident energy equals 1.2 cal/cm², the threshold for a second-degree skin burn, per IEEE 1584 and NFPA 70E.
−## One label-content method shall be selected for the entire project -- either the incident-energy method or the PPE-category method -- and shall be applied consistently; the two methods shall not be combined on a single label.
+## One label-content method shall be selected for the entire project — either the incident-energy method or the PPE-category method — and shall be applied consistently; the two methods shall not be combined on a single label.
### NFPA 70E does not permit mixing the incident-energy and PPE-category approaches on the same label; a specification that simply says "provide labels per NFPA 70E" without naming the method invites inconsistent and non-compliant labels across the job. {note}
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```datasheet
−label: Working distance -- panelboards 240 V and below
+label: Working distance — panelboards 240 V and below
type: range
unit: in
…5 unchanged lines
```datasheet
−label: Working distance -- 480 V switchgear / MCC
+label: Working distance — 480 V switchgear / MCC
type: range
unit: in
…8 unchanged lines
type: radio
options:
− - WARNING (black on orange) -- typical arc-flash conditions
− - DANGER (white on red) -- extreme conditions
−default: WARNING (black on orange) -- typical arc-flash conditions
+ - WARNING (black on orange) — typical arc-flash conditions
+ - DANGER (white on red) — extreme conditions
+default: WARNING (black on orange) — typical arc-flash conditions
```
…10 unchanged lines
# Junction and Pull Box Identification {toc}
−## Junction boxes and pull boxes shall be identified so that a worker opening a covered box knows the system and circuits within before contacting the conductors. {note}
+## Junction boxes and pull boxes shall be identified so that a worker opening a covered box knows the system and circuits within before contacting the conductors.
## Each junction box and pull box cover shall be marked with the system it carries and the circuits or feeder designation it contains.
…33 unchanged lines
- "Emergency = red, Standby = orange"
- "Emergency = red, Standby = yellow"
− - Other -- record in posted legend
+ - Other — record in posted legend
default: "Emergency = red, Standby = orange"
unit:
…14 unchanged lines
# Underground Electrical Identification {toc}
−## Underground electrical runs shall be marked with warning tape buried above the conduit or cable, so that future excavation encounters the warning before the conductor. {note}
+## Underground electrical runs shall be marked with warning tape buried above the conduit or cable, so that future excavation encounters the warning before the conductor.
## Detectable or non-detectable underground warning tape shall be installed above each underground electrical run, located at the burial depth specified for the project.
## Underground warning tape shall be installed a minimum of 12 in. above the cable or conduit it protects.
−## Warning tape shall be red, a minimum of 6 in. wide, and shall carry a legend such as "CAUTION -- BURIED ELECTRIC LINE BELOW."
+## Warning tape shall be red, a minimum of 6 in. wide, and shall carry a legend such as "CAUTION — BURIED ELECTRIC LINE BELOW."
## Detectable (metallic-backed) warning tape shall be used where the buried run is non-metallic and must be locatable by electromagnetic line-tracing equipment.
…30 unchanged lines
# Installation {toc}
−## Identification shall be applied only after surfaces are clean, dry, and free of dust, oil, and curing compounds, so that adhesive labels and markers bond and remain legible for the life of the equipment. {note}
+## Identification shall be applied only after surfaces are clean, dry, and free of dust, oil, and curing compounds, so that adhesive labels and markers bond and remain legible for the life of the equipment.
## All identification shall be applied so that legends are readable from the normal working or access position for that equipment, conductor, or raceway.
…11 unchanged lines
# Delivery, Storage, and Handling {toc}
−## Identification products shall be delivered in original packaging and stored so that adhesives, label stock, and printed legends are not degraded before installation. {note}
+## Identification products shall be delivered in original packaging and stored so that adhesives, label stock, and printed legends are not degraded before installation.
## Identification materials shall be stored indoors in a dry location within the temperature and humidity range specified by the manufacturer until installed.
…9 unchanged lines
## Field-applied identification shall remain legible and securely adhered, without fading, peeling, curling, or delamination, for the warranty period.
−## Identification that fails -- by becoming illegible, detaching, or corroding -- within the warranty period shall be replaced at no cost to the Owner.
+## Identification that fails — by becoming illegible, detaching, or corroding — within the warranty period shall be replaced at no cost to the Owner.
```datasheet
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default: 10
```