PWS Appendix B - DISA Labeling Std.pdf

UNCLASSIFIED

APPENDIX B: MINIMUM TECHNICAL SPECIFICATION FOR

STRUCTURES, SYSTEMS, EQUIPMENT, & COMPONENTS:

IDENTIFICATION, LABELING, AND MARKING

HAW RM 191 CRAH REPLACEMENT

EFFECTIVE DATE: 02-AUGUST-2024

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Table of Contents

1. Purpose

2. Scope

3. Definitions

4. General Requirements

4.1. Labeling

4.1.1. Materials

4.1.2. Attachment

4.1.3. Character Design and Size

4.2. Color Coding

4.2.1. Color Coding – Pipe and Conduit

4.2.2. Color Coding – SEC Labels

4.3. Language

4.4. Other Identification Systems

5. General Requirements - Systems, Equipment, and Components Labeling

5.1. Unique Identifier (UID) Number Development

5.2. Label Format

6. Mechanical Systems, Equipment, & Components

6.1. Labeling

6.1.1. Valves & Dampers

6.2. Mechanical Piping Systems, Equipment, and Components

7. Electrical Systems, Equipment, & Components

7.1. Labeling

7.2. Typical Electrical Systems, Equipment, and Components

7.3. Other Electrical Systems, Equipment, and Components

7.3.1. Rackable Breakers

7.3.2. Devices, and Electrical Junctions and Boxes

7.3.3. BAS Systems, Equipment, and Components

Appendix 1. Systems, Equipment, & Components Designator List

Appendix 2. System Designator List

Appendix 3. Switchgear, Large Switchboard, and Motor Control Labeling Example

Appendix 4. Switchboard, and Large Panelboard Labeling Example

Appendix 5. Panel Schedule Labeling Example

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List of Figures Figure 1 – Compliant Piping System Marking and Labeling Figure 2 – Compliant Label Figure 3 – Compliant Electrical SEC Label Figure 4 – Compliant Mechanical SEC Label Figure 5 – Compliant Mechanical SEC Label Figure 6 – Compliant Mechanical SEC Label Figure 7 – Compliant Valve Label Figure 8 – Compliant Valve Label Figure 9 – Compliant Electrical SEC Label Figure 10 – Compliant Electrical SEC Label Figure 11 – Essential Switchgear Figure 12 – Panelboard Figure 13 – Electrical Panel Figure 14 – Panel Schedule Template

List of Tables Table 1 – Compliant Color-Coding for Piping and Conduit Table 2 – Compliant Color-Coding for SEC Labels Table 3 – SEC Designator Table 4 – System Designator

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1. PURPOSE

This DISA (Defense Information Systems Agency, Facilities Engineering Denver) standard establishes guidance for identifying, marking and labeling structures, systems, equipment, and components (SSEC).

2. SCOPE

This standard contains instruction for uniform identification, labeling, and marking of SSEC at DISA locations.

Applications include:

• Identifying, labeling, and marking new SSEC when installed

• Uniform identification of SSEC across DISA datacenters

3. DEFINITIONS

‘Shall’ identifies mandatory elements and requirements.

‘Should’ identifies a recommendation that is based on standard industry practice and good business policy.

‘May’ identifies when permission is granted rather than constituted as a requirement.

4. GENERAL REQUIREMENTS

All SSEC shall be labeled in accordance with this standard before being designated operable or in service.

Labeling in areas where hazards exist (i.e., high structures and confined spaces) shall be evaluated against safety requirements. For example, to reduce personnel risk, some SSEC could be labeled as site conditions permit (e.g., shutdown), or when scheduled maintenance is performed.

4.1. LABELING

Labels shall be permanently attached and designed to withstand wear, moisture, erosion and corrosion.

Additionally, labels shall be heat resistant in high temperature areas, corrosion resistant in acidic or caustic areas, and both UV and corrosion resistant in outdoor areas.

Position labels so they are readily visible and oriented in a horizontal position on a flat surface, where feasible. Labels shall be legible without manipulation by site personnel. Large SSEC shall be labeled in multiple locations, in close proximity to where work is performed.

Installed labels or tags shall not interfere or alter existing manufacturer’s nameplate or code information.

Labels shall be mounted to preclude accidental removal and located to eliminate any possible confusion as to the item being identified and shall not obscure other items nearby.

Label size shall be based on available lighting and anticipated reading distances. SSEC which require local operation during blackout or reduced visibility conditions shall be marked with reflective or glow-in-the-dark tape.

Labels shall not interfere with an operator’s ability to read an instrument, display, or gauge.

4.1.1. Materials

Plastic Labels: Flexible engraving stock (aka Lamicoid or Phenolic) with at least a two-color plastic material to obtain the required color coding combination is the preferred material for permanent systems, equipment, and components (SECs) labels. Characteristics of flexible engraving stock include abrasion, heat, wear, and chemical resistance.

Vinyl Film: Flexible, high gloss, durable indoor/outdoor, pressure sensitive adhesive-backed vinyl film at least

0.004 inches (4 mil) thick. Label stall be printed in accordance with background and font color and size

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Metal Labels: Metal tags are acceptable for permanent equipment SEC labels. Paints or powder coatings used on these tags shall be environmentally stable, chemically resistant, and wear resistant.

Identification Tape: Commercially available tape products may be used for labeling of common SEC where detailed unique identifiers (UIDs) and other information is not necessary; for example, labels on insulated piping indicating contents and direction of flow.

Machine-Printed Identification Tags: On SEC subject to frequent modification or replacement (for example, power whips from a power distribution unit (PDU) to an IT equipment rack or the plug in unit for an overhead track bus (OTB)), machine-printed labels are acceptable. These typically print on a flexible form of machine-generated plastic-coated material, which shall be secured to the SEC in such a manner as to protect the labeling information from degradation. Machine-printed identification information shall be indelible, environmentally stable, and chemically resistant.

Unapproved Materials: Materials which can be lost, damaged, rendered unreadable, easily removed, soiled or degraded by operating environment, or which are of a non-permanent nature shall not be used for labeling or identification purposes. This includes (but is not limited to) paper, paper in clear plastic protectors, and direct labeling of SEC with markers. Paint may only be used where specifically identified in this standard, and must be applied using a stencil which meets the font requirements.

4.1.2. Attachment

Adhesives: Adhesives may be used to secure labels or tags to SECs. Adhesives shall securely fasten the label to the SEC without causing degradation to the SEC or the label. The adhesive shall be chemically compatible with the label material, the component material, and the environment. Adhesives shall not be used on stainless steel piping or components.

Wire: Bare wire may be used for attaching labels to SECs where use of adhesives is not practical and there is no risk of the bare wire becoming electrically energized (e.g., valves).

Cable Ties: Standard 50 lb cable ties (a.k.a. zip ties, nylon ties, plastic ties, tie wraps) may be used for attaching labels to SECs where use of adhesives is not practical (e.g., valves).

Chain: Zinc plated general utility chain may be used for attaching labels to SECs. The type of chain shall be single-jack chain of trade size 20 or 18.

Screws or Rivets: Screws or rivets may be used to secure labels to SECs as long as the attachment does not cause degradation to the SEC or label. Screws shall be metal type, with size, length, diameter, head, pitch, and axis not prescribed, but sufficient to adequately adhere labels. Rivets shall be steel, with type and dimensions not prescribed, but sufficient to adequately adhere labels.

4.1.3. Character Design and Size

Labels shall be formed with upper and lower case letters using simple letter styles. A bold sans serif font, minimum font size 24, is standard for SEC labeling purposes. The maximum standing viewing distance for minimum font sizes is 60 inches (from label to the eye of the standing individual). With this font size, a 3 x 5 inch label is recommended.

Labels not visible from this distance shall use bold sans serif font 28. With this font size, a 4 x 6 inch label is recommended.

Handwritten labels are not permitted.

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4.2. COLOR CODING

4.2.1. Color Coding – Pipe and Conduit

Color code mechanical piping and electrical conduit in accordance with the following table:

Table 1 – Compliant Color-Coding for Piping and Conduit Fluid Type / System Pipe/Conduit Color Text Color

Chilled Water Supply Piping Blue White

Chilled Water Return Piping Light Blue White

Building Automation System Conduit Green Black

Piping and conduit shall be color coded and labeled/stenciled in accordance with Table 1 the following:

a. Label or stencil the system/service using industry standard spacing and the following:

Outside Diameter Label Height Text Height

<1-1/4 inch 1 inch 1/2 inch 1-1/2 to 2 inch 1 inch 3/4 inch 2-1/2 to 6 inch 2 inch 1-1/4 inch

8 to 10 inch 3 inch 2-1/2 inch >10 inch 4 inch 3-1/2 inch

b. Place arrows to indicate direction of flow through the piping. Where flow is bidirectional, arrows shall not be used.

c. Place labels on the center line of pipe, with the following exceptions:

(1) If the piping is located above the normal line of vision, the label shall be placed below the horizontal center line of the pipe to maximize visibility

(2) If the piping is located below the normal line of vision, the label shall be placed above the horizontal center line of the pipe to maximize visibility.

d. Label piping and conduit, including when not normally exposed to view, at the following locations:

(1) Either side of wall or floor penetrations

(2) Near valves or flanges

(3) Adjacent to changes in direction, branches, at any line entry or reentry point

(4) Every 20 to 25 feet on straight runs.

e. Color code conduit and piping or insulation, including when not normally exposed to view, in accordance with one of the following:

(1) For conduit located indoors, use a manufacturer’s color option, paint is not acceptable.

(2) For conduit located outdoors or any uninsulated piping, either use paint, or a manufacturer’s color option.

(3) For insulated pipe, enclose insulation in color-coded plastic (vinyl or PVC).

Legacy color schemes in use at DISA datacenters are authorized to remain in use. Any and all insulation replacements, projects affecting piping and conduit systems, and new installations shall use the color coding in accordance with this standard.

Figure 1 – Compliant Piping System Marking and Labeling

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4.2.2. Color Coding – SEC Labels

SEC label colors shall provide a high contrast between characters and background to enhance legibility.

Electrical and mechanical SEC labeling shall be color coded in accordance with the following table:

Table 2 – Compliant Color-Coding for SEC Labels SEC Background Color Text Color

“A” Bus Distribution (Critical) White Black

“B” Bus Distribution (Critical) Blue White

Building Tan Black*

Building Automation System Green Black “C” Bus Distribution (Essential) & Emergency Generator Distribution Black White

Chilled Water Supply Blue White

Chilled Water Return Light Blue White

“D” Bus Distribution (Essential) Gray Black **Dual-fed “A” / “B” Bus Distribution (Critical) or **Dual-fed “C” / “D” Bus Distribution (Essential) Brown White

Ground Dark Green White or Yellow*

* Existing legacy labels may be retained if the label is clearly legible from at least 6 ft, or standing on the floor, whichever is further.

(Building: Tan/White; Ground: Dark Green/Black; E Bus: Gold/White)

** Dual bus is only used when the equipment has multiple feeds internal to the equipment or there is a dual source SEC such as ATS, MTS, STS, or another dual source SEC (SWBD, SWGR, etc) immediately upstream of the SEC. Dual bus is not used for equipment containing tie breakers, such as utility main.

4.3. LANGUAGE

Use of SSEC UIDs and descriptions shall be consistent among SSEC labels, equipment lists, drawings, procedures, checklists, and load lists. Checklists, procedures, and installed labels shall use UIDs to describe the name and number nomenclature for the SSEC.

Only use abstract symbols with a commonly accepted meaning for all intended users (e.g. %). Brevity should not be stressed if the results will be unfamiliar to operating personnel. Words on labels should be concise and still convey the intended meaning.

4.4. OTHER IDENTIFICATION SYSTEMS

If a conflict with any other mandatory standard(s) or guidance affecting the data center environment is identified, DISA will make a determination on the governing standard(s) or guidance. This standard does not define identification, labeling, and marking standards for communications, data cabling, or computing and storage enclosures. This standard does not supersede ABA (Architectural Barriers Act) requirements.

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5. GENERAL REQUIREMENTS - SYSTEMS, EQUIPMENT, AND COMPONENTS LABELING

5.1. UNIQUE IDENTIFIER (UID) NUMBER DEVELOPMENT

The contractor shall provide the following information for the site to create new UIDs used on the Contractor installed labels:

a. SEC Designator. Reference Appendix 1 for approved SEC Designators. This is the type of equipment.

b. Floor Number. Provide floor number, use 0 for basement, G for outside, R for roof, and M for mezzanine.

c. Power source (bus). If the equipment has multiple power sources, all shall be listed, with the normal power source first.

d. System designator for the system in which the equipment is installed. Reference Appendix 2 for approved system designators.

e. Equipment capacity.

This information should be provided as soon as possible allow the use the UIDs on design drawings.

5.2. LABEL FORMAT

Label SECs using materials, attachment method, and size in accordance with section 4.1. Labels shall consist of a rectangular tag or pendant engraved, embossed, or imprinted with five (5) lines of information:

Line 1: UID Number (required)

Line 2: Descriptor (Capacity) (required)

Line 3: Source or From UID (electrical source) (required, list all source UIDs)

Line 4: “Common” or “Legacy” Name (required when applicable)

Line 5: BAS Device Name (required when applicable)

Line 1 →

Line 2 → Line 3 → Line 4 →

Line 5 →

Figure 2 – Compliant Label

• Background and text color in accordance with Table 2. If the SEC has dual power sources, then the dual power color is used.

• Line 1: UID Number, provided by DISA.

• Line 2: Varies by SEC type. For most SEC, this line captures the capacity of the SEC and is a required field. For valves, it captures the normal valve position.

• Line 3: Source electrical SEC. On the label, it is reflected with the Source UID Number(s) immediately followed by the circuit or breaker when the circuit or breaker does not have a UID. When the associated breaker has a UID, use the panel circuit number or bucket number instead of the breaker number. For dual power sources directly feeding the SEC, both are listed.

• Line 4: “Common” or “Legacy” name (required when applicable), and has quotes around the name.

For valves, this may be used to identify the valve type. This does not apply to new equipment. This is used for verification with older documents which reference a legacy name and not the current UID.

• Line 5: Device name (legacy labels only). This is legacy information only, and only applies when the BAS name is not the UID. Most BAS names have been updated to the current UID.

Figures 2, 3, and 4 show examples of compliant labels.

PDU_4−B−06

225 kVA

UDP_1˘B˘02−Ckt 17,19,21

ˆPDU303B˜

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Figure 3 – Compliant Electrical SEC Label Figure 4 – Compliant

Mechanical SEC Label

6. MECHANICAL SYSTEMS, EQUIPMENT, & COMPONENTS

6.1. LABELING

Mechanical SECs shall be labeled with plastic or vinyl labels and attached to a structural member of the SEC not normally removed during routine maintenance (e.g., base plate) in a consistent location for similar SEC, and in accordance with paragraph 5.1. Ensure all labels are visible after insulation is installed.

Figure 5 – Compliant Mechanical SEC Label Figure 6 – Compliant

Mechanical SEC Label

6.1.1. Valves & Dampers

Actuated valves and dampers shall be labeled separately from the associated SEC, unless part of an assembly.

Stainless steel tagging wire shall be placed in such a manner so as not to damage the valve stem or impede operation of the valve. Label plates and connecting wire shall not be threaded through the valve hand wheels, operating chains, or damper linkage.

Valves associated with a piece of equipment or component, such as backflow preventers (BFPs), do not require a separate UID; the UID of the BFP encompasses the assembly.

When numbering valves including those without an associated process and instrumentation diagram (P&ID), start numbering at the source and sequentially follow the process flow of that system.

CH_1−C−01

900 Ton

ESWGR_1−C−01, 4B

"Chiller 1"

CH1

DT_1−EG−01

200 GAL

← Line 1 → ← Line 2 → ← Line 3 → ← Line 4 → ← Line 5 →

← Line 1 → ← Line 2 → ← Line 3 → ← Line 4 → ← Line 5 →

EGEN_G−EG−02

750 kVA

"Generator−02"

GEN2

CRAH_2˘CD˘16

40 Ton

ATS_2−CD−06

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Figure 7 – Compliant Valve Label Figure 8 – Compliant Valve Label

6.2. MECHANICAL PIPING SYSTEMS, EQUIPMENT, AND COMPONENTS

Mechanical piping SEC and conveyed materials, unless otherwise noted in this standard, shall follow the current version of the Scheme for Identification of Piping Systems (ANSI/ASME A13.1). For the purposes of this standard, piping SEC shall include pipes of any kind and, in addition, fittings, valves, and pipe coverings.

Supports, brackets, or other accessories are specifically excluded from applications of this standard. This standard does not apply to pipes buried in the ground.

7. ELECTRICAL SYSTEMS, EQUIPMENT, & COMPONENTS

7.1. LABELING

Electrical distribution SEC including, but not limited to, transformers, switchgear, switchboards, UPS modules, generators, motor control centers, distribution panels (both primary & secondary), and bus and switchyard components shall be labeled with plastic labels.

Smaller components such as breakers, switches, and associated receptacle boxes shall be labeled with approved machine-printed tags secured with clear plastic or adhesive tape, cable tags or other approved methods.

Labels installed internal to electrical or electronic components shall not provide a ground or short circuit path or interfere with the operation of components. All electrical equipment which is served by or which contains multiple sources of power shall comply with NFPA 70 standards to identify all disconnecting means.

Breakers for remote shutdown equipment that is operated from the local breaker shall have an additional label fabricated from luminescent or reflective tape to aid in identification during blackout or remote shutdown. Emergency Power Off (EPO) buttons for remote emergency shutdown of SEC shall have an additional label fabricated from luminescent or reflective tape to aid in identification during blackout or remote shutdown.

7.2. TYPICAL ELECTRICAL SYSTEMS, EQUIPMENT, AND COMPONENTS

All distribution panelboards (DPs) shall have associated panel schedules or circuit directories physically located at each panel. This includes switchboards and large DPs (typically greater than 225A), which shall be physically labeled adjacent to each circuit (See Appendix 4). Individual circuit breakers inside DPs (typically rated less than or equal to 225A) shall be physically numbered adjacent to each breaker, corresponding to the panel schedule (See Appendix 5).

← Line 1 → ← Line 2 → ← Line 3 → ← Line 4 → ← Line 5 →

VLV_1−FP−02

Normally Closed

DP_1−B−09

ˆSolenoid Valve˜

V_3−CHWS−03

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Figure 9 – Compliant Electrical SEC Label Figure 10 – Compliant

Electrical SEC Label

7.3. OTHER ELECTRICAL SYSTEMS, EQUIPMENT, AND COMPONENTS

7.3.1. Rackable Breakers

Rackable breakers are labels using only Line 1 of the standard label, the UID. The breaker bucket is also labeled in accordance with Appendix 3, Switchgear, Large Switchboard, and Motor Control Labeling Example, and Figure 11 – Essential Switchgear.

7.3.2. Devices, and Electrical Junctions and Boxes

Identification and labeling shall be made on all devices, and electrical junction and terminal boxes in accordance with facility requirements.

7.3.3. BAS Systems, Equipment, and Components

Labeling for Building Automation Systems (BAS) systems shall be in accordance with paragraph 4.1 and Table 2. Conduit shall be color coded in accordance with Table 1.

← Line 1 → ← Line 2 → ← Line 3 → ← Line 4 → ← Line 5 →

EMCC_1−D−01−02

800 A

EDP_1−D−09 Ckt 01,03,05

ˆMCC−1 Section 1˜

CRAH_4˘CD˘15

40 Ton

UDP_1−C−02 Ckt 01,03,05

UDP_1−D−02 Ckt 01,03,05

ˆCRAC 15˜

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Appendix 1. Systems, Equipment, & Components Designator List

The following is a list of System, Equipment, & Component Designators (part of the first field of the UID Number). The intent of this list is to provide guidance and consistency in labeling of systems, equipment and components. UID Numbers shall be defined on a legend for new projects.

Also included in this list are the recommended System Designators that correspond with each SEC Designator.

Table 3 – SEC Designator ATS Automatic Transfer Switch

BASM Building Automation System Monitor

BASP Building Automation System Panel

BRKR Breaker

CHWRV Chilled Water Return Valve

CHWSV Chilled Water Supply Valve

CHWV Chilled Water Valve

CRAH Computer Room Air Handler

EDISC Disconnect (Essential)

EDP Distribution Panel (Essential)

EPOS Emergency Power Off System

ESWBD Switchboard (Essential)

ESWGR Switchgear (Essential)

Table 3 – SEC Designator GNDB Ground Bar

GNDSYS Grounding System

IRC In Row Cooler

JBOX Junction Box

PDU Power Distribution Unit

SRG Signal Reference Grid

UDISC Disconnect (Critical)

UDP Distribution Panel (Critical)

USWBD Switchboard (Critical)

USWGR Switchgear (Critical)

VFD Variable Frequency Drive

VLV Valve (generic)

V Valve (manual)

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Appendix 2. System Designator List

The following is a list of System Designators. The power source is typically used for the system designator unless the component does not have a power source. The intent of this list is to provide guidance and consistency in labeling of systems, equipment and components.

Table 4 – System Designator A A Bus

B B Bus

BL Building

BAS Building Automated System

C C Bus

Table 4 – System Designator CHW Chilled Water Supply

CHWR Chilled Water Return

D D Bus

AB* Dual Bus (A & B)

CD* Dual Bus (C & D)

GD Ground (Electrical)

* Dual bus is only used when the equipment has multiple feeds internal to the equipment or there is a dual source SEC such as ATS, MTS, STS, or another dual source SEC (SWBD, SWGR, etc) immediately upstream of the SEC. Dual bus is not used for equipment containing tie breakers, such as utility main.

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Appendix 3. Switchgear, Large Switchboard, and Motor Control Labeling Example

All switchgear, large switchboards and motor control centers shall be labeled by section as well as compartment.

Each switchgear, large switchboards, and motor control centers shall have an overall UID and label.

Each meter, surge protection device, rackable breaker, and non-rackable breaker (sized 800A or larger) will be labeled with the UID.

Each compartment containing a rackable breaker will be labeled with one of the following:

1. The downstream equipment UID isolated by the breaker The location of the downstream equipment Optional: Legacy name of the downstream equipment

2. Spare

3. Descriptor of the component of the equipment (ie, main or tie, etc).

Section Labeling In the example below, the manufacturer provided the switchgear in five (5) sections. Therefore, each section shall be labeled following the standard labeling convention.

This label shall be in accordance with paragraph 4.1 and Table 2. All sections shall be labeled. Empty and Spare sections shall be labeled as spare.

Compartment Labeling When the compartments do not have a generic label such as 1A, 2A, these labels shall be added. The columns are numeric characters, rows are alpha characters. So the top compartment in the left section is 1A, the next compartment down is 1B, the top compartment to the immediate right of 1A is 2A. Figure 11 shows these generic labels in the bottom right of each compartment.

Section 1/5 Section 2/5 Section 3/5 Section 4/5 Section 5/5

BRKR_1−BL−25

ESWGR_1−C−01

3,000 AMP

SWGR_G−C−01

EGEN_G−EG−01

ESWGR_1−C−01

3,000 AMP

SWGR_G−C−01

EGEN_G−EG−01

BRKR_1−BL−25

1B 2A 4B

4A 5A

5B

5C3B

3A

BRKR_1−BL−21

BRKR_1−BL−22

BRKR_1−BL−23

BRKR_1−BL−03

BRKR_1−BL−26

BRKR_1−BL−27

EDP_1−C−04

Room 135

Spare

Spare

EDP_1−C−08

Room 138

EDP_1−C−15

Room 143

EDP_2−C−17

Room 202

Spare

EDP_1−C−15

Room 143

BRKR_1−BL−03 BRKR_1−BL−04

BRKR_1−BL−35

C Gen Main

C Utili ty Main C Bus Main

C Gen Main

1A

Spare

Figure 11 – Essential Switchgear

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Appendix 4. Switchboard, and Large Panelboard Labeling Example

CKT 1

PDU_ 2−B−02

CKT 3

PDU_ 2−B−08

CKT 5

PDU_ 2−B−10

CKT 7

SPARE

CKT 9

SPARE

CKT 1 1

SPARE

CKT 2

PDU_ 2−B−05

CKT 4

SPARE

CKT 6

PDU_ 2−B−06

CKT 8

SPARE

CKT 1 0

SPARE

CKT 1 2

SPARE

CKT 1

PDU_2−B−02

Panel Outside Cover Panel Interior

USWBD_1−B−02

2000 A

USWGR_1−B−04

Figure 12 – Panelboard

Notes:

• The exterior of the switchboard or large panelboard will have a UID label on the exterior (Figure 12, left side).

• Circuit identifier labels shall be located to eliminate any possible confusion as to the item being identified and shall not obscure other items nearby

• Circuit identifier label colors shall provide a high contrast between characters and background to enhance legibility in accordance with paragraph 4.1 and Table 2. For example, Blue field with White letters for “B” Bus Distribution SEC.

• Circuit identifier label size is approximate

• Circuit identifier labels shall be permanently attached and designed to withstand wear, erosion, and corrosion

• Circuit identifier labels shall be mounted in such a manner to preclude accidental removal

• The panel schedule will follow guidance under Appendix 5

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Appendix 5. Panel Schedule Labeling Example

Circuit #

Figure 13 – Electrical Panel

Distribution Panel Schedule UID #: Location:

From: Updated:

Voltage: Rating (Amps): Frequency: KAIC:

CKT # Amps Description Description Amps CKT #

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

Panel Notes:

Figure 14 – Panel Schedule Template

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Notes:

• Circuit number labels shall be located along the outside edge of their respective breakers

• Circuit identifier label colors shall provide a high contrast between characters and background to enhance legibility in accordance with paragraph 4.1 and Table 2.

• For inline or single distribution panels, circuit numbers shall start with one and proceed sequentially.

For split distribution systems, as shown in Figure 13, circuit numbers shall start with odd numbers on the left hand breakers and even numbers on the right hand breakers.

• Circuit number label size is approximate

• Circuit number labels shall be permanently attached and designed to withstand wear, erosion, and corrosion, and preclude accidental removal

• The panel schedule shall mirror the numbering convention on the circuit number labels

• The panel schedule shall include a Description of each circuit, providing necessary detail for maintenance personnel

• The heading of the panel schedule shall include the panel UID, location (room and general location within the room where the panel is installed), from (power source), date (when the schedule was updated), incoming voltage (ie, 480Y/277), rating (include at a minimum voltage, phase, and wire, ie, 400 VAC, 3 phase 4W), and KAIC.

• Circuit labeling shall include all available distribution circuits whether used, spare, or space. The panel schedule shall also capture this detail.

• When known, include the following in general notes: panel manufacturer and model number

• Figure 14 reflects the standard panel schedule template

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