Appendix J - Labeling Specification.docx

Table of Contents

List of Figures

List of Tables

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

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 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.

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.

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 workers perform their tasks.

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 glowinthedark tape.

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

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.

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.

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., valve tags).

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., valve tags).

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.

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.

Color Coding 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

Fire Systems Piping (all) Fire Systems Conduit (in accordance with NFPA 70)

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

Label or stencil the system/service in accordance with Table 1, using industry standard spacing and the following

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

Place labels on the center line of pipe in accordance with Table 1, with the following exceptions:

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 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.

Label piping and conduit, including when not normally exposed to view, at the following locations:Figure 1 – Compliant Piping System Marking and Labeling

Either side of wall or floor penetrations Near valves or flanges Adjacent to changes in direction, branches, at any line entry or reentry point Every 20 to 25 feet on straight runs.

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

For conduit or uninsulated piping, either use paint, or a manufacturer’s color option in accordance with Table 1.

Enclose piping insulation in colorcoded plastic (vinyl or PVC) in accordance with Table 1.

Exceptions: Do not color code piping or insulation jacketing, only label/stencil in accordance with Table 1 and place directional arrow for the following instances:

Outdoor Combustible/Fuel piping. If painted, only paint outdoor combustible/fuel piping white.

Outdoor insulated piping with aluminum jacket.

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.

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

“C” Bus Distribution (Essential) & Essential (Emergency Generator) Distribution

Dual-fed “A” / “B” Bus Distribution (Critical) or Dual-fed “C” / “D” Bus Distribution (Essential)

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.

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.Figure 2 – Compliant Column Label

Facilities Load Bearing Columns Identification Load-bearing columns (or posts), shall have column labels to identify the column number. This column number is uniquely defines a quadrant around the specific column and abuts quadrants of adjacent columns.

Using an alphanumeric system, column UIDs shall designate A01 as the first corner column of the building as defined by current drawings. Floor numbers are not included on column UIDs, however may be used when identifying columns on drawings, with the floor number preceding the column UID.

Labeling Column UIDs shall be a 4 inch character, semi-gloss black lettering with the UID visible from any location in the room. UIDs may be applied using paint, adhesives, or other means that meet the required dimensions and characteristics mentioned above. UIDs shall be located on at least two opposing sides of each column.

Rooms and Doors The minimum standard for these labels is a plastic label in accordance with paragraph 4.1.

Rooms All rooms within each facility shall be labeled at all entrances. Signage shall be posted immediately adjacent to the entrance designating the room.

Room numbers should be three numbers in length, with the first number designating the floor number followed by 2 sequential numbers. For example, RM-101 is on the first floor and is the first room designated. Rooms may also retain their name; e.g., Battery Room as long as the name is in line with the current room function and is included as part of the room number; e.g., Battery Room RM-103. An alpha designator may follow the number when a room has been subdivided. Areas that do not follow this convention may use a descriptor of the location, e.g., MechYard, Roof, Mezzanine, or Outside.

Doors All doors within each facility should be labeled with the door number on both sides of the door.

Door numbers should be three numbers in length, with the first number designating the floor number followed by 2 sequential numbers. For example, Door #101 is on the first floor and is the first door designated. Access description may be included, for example “Roof Access, Door #234.”

All doors which alarm when opened shall have a warning sign posted in accordance with the site standard. If the approved sign is not available for installation when the alarm on the door is activated, a similar temporary paper sign shall be posted until the permanent approved sign is available for installation.

Computer Rooms and IT Equipment Floor Grid Designation For access floors, the floor tiles are given X and Y coordinates. For solid floors, a 24 x 24 inch or 60 x 60 cm grid centered on column lines is given X and Y coordinates for layout purposes. These coordinates consist of numbers and letters.

Labeling Label floor grid coordinates on all walls, centered on the coordinate. Letter coordinates are labeled for every coordinate. Number coordinates are labeled in accordance with one of the following:

Access floor data centers:

Every coordinate, or Every fifth coordinate, and the first and last coordinate (i.e., a room with 23 numbered coordinates would have a minimum of 1, 5, 10, 15, 20, 23 labeled).

Solid floor data centers: Every numbered coordinate shall be labeled.

Floor grid coordinates shall be at least a 2 inch character, semi-gloss black lettering mounted in a position visible from the middle of the room at the same height, typically 7 to 9 feet above the floor. Coordinates may be applied using paint, adhesives, or other means that meet the required dimensions and characteristics.

Legacy floor grid coordinate labels in use at DISA datacenters are authorized to remain in use if the labels are readable from the middle of the room.

IT Cabinets The IT cabinets shall be assigned a UID Number based on the grid location at the front of the cabinet (cold aisle). Where the front of the cabinet is across 2 coordinates, the coordinate which is covered by the majority of the cabinet is used. Where the front of the cabinet is equally split across 2 coordinates, the left front corner, when looking at the front of the cabinet in the cold aisle, is used.

The UID Number shall have three fields:

1st Field: Floor Number, when the building has more than one floor 2nd Field: Floor grid letter coordinate at the front of the cabinet (one or more letters) 3rd Field: Floor grid number coordinate at the front of the cabinet (two numbers, including leading 0s)

Figure 3 – Example IT Cabinet UID

Assuming the IT cabinets in Figure 3 are on the third floor, the UIDs would be 3E18, 3F18, 3G18, 3E22, 3F22 and 3H22.

Labeling For IT cabinets, the cabinet shall be labeled on the front and rear exterior of each cabinet, on the on the frame above the door. The minimum standard for these labels is plastic color coded label in accordance with paragraph 4.1 and Table 2.

IT cabinet labels shall have at least 2 lines of information:

For PDUs: PDU UID - pnl # - ckt #s For OTBs: Plug in Unit UID Additional Lines: similar to Line 2 until all power sources are listed.

When IT cabinets are powered by an OTB, the A & B feed plug in units shall have the same sequence number.

Figures 4 and 5 show a typical PDU powered or OTB powered IT cabinet label:

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

Figure 4 – Compliant IT Cabinet Label

Figure 5 – Compliant IT Cabinet Label

Non-IT Systems, Equipment, and Components (SECs) For non-IT SECs, the UID label requirements are outlined in Section 6, General Requirements - Systems, Equipment, and Components Labeling.

Power to IT Cabinets Each IT cabinet is fed from two buses. The feed and labels are color coded in accordance with Table 2.

Power Distribution Unit (PDU) Powered IT Cabinets Whips provide power from PDUs to the IT cabinet. Whip cables shall have continuous external jacketing to correspond with the feed color code.

Whip receptacles are connected to the IT cabinet metered power distribution units (MPDUs). Figures 6 and 7 show compliant labels when installed under the access floor:

Figure 6 – Compliant Whip/MPDU A-Feed

Figure 7 – Compliant Whip/MPDU Feeds

Labels for each whip receptacle shall consist of a rectangular tag imprinted with one line of information:

Line 1: PDU sequence number - pnl # - ckt #s, or PDU UID-pnl #-ckt #s For Example, if the whip is fed from PDU_2-A-04, Panel 03, Circuit 10 the label would be 04-03-10 or PDU_2-A-04-PNL 03-CKT 10. The minimum standard for these labels is machine-printed identification tags in accordance with paragraph 4.1 and Table 2.

Overhead Track Bus (OTB) Powered IT Cabinets OTBs provide plug in units with receptacles directly above the IT cabinets. Each OTB track, end feed unit, and plug in unit is color coded to correspond with the feed in accordance with Table 2, using the manufacturer’s standard color options.

Each plug in unit connected to the track is given a UID, however the sequence number may not be in order due to changes with IT cabinet layouts. When moved, the UID only changes if the receptacle is connected to a different OTB. Each plug in unit UID inherits the OTB UID and adds an additional sequence number:

1st Field: OTB UID, followed by a dash 2nd Field: Sequence Number. Two digits including leading 0s.

Labels for each plug in unit shall consist of a rectangular tag imprinted with one line of information:

Line 1: plug in unit UID Note: the A-feed and B-feed plug in units for the same rack must have the same sequence number.

For example, if the MPDU is connected to the second plug in unit on OTB_2-A-15, the label would be OTB_2-A-15-02. The minimum standard for these labels is machine-printed identification tags in accordance with paragraph 4.1 and Table 2.

Metered Power Distribution Units (MPDUs) The MPDU cords shall be marked with a minimum of four inch wide tape to demarcate the feed. The tape shall be placed in two locations:

Within one foot from where the MPDU plugs into the receptacle/socket, and Where the MPDU cord enters the IT cabinet on the inside of the cabinet.

The MPDU cord shall be labeled in the same way as the whip/plug in unit. The minimum standard for these labels is machine-printed identification tags in accordance with paragraph 4.1 and Table 2.

General Requirements - Systems, Equipment, and Components Labeling Unique Identifier (UID) Number All SECs shall be assigned a UID Number. The UID Number shall have a minimum of four fields:

1st Field: SEC Designator. Reference Appendix 1 for approved SEC Designators. The SEC Designator is followed by an underscore Note, breakers located on large switchboards (SWBDs), switchgear (SWGR), and motor control centers (MCCs) use the SEC Designator “BRKR” 2nd Field: Floor Number. For areas not given a numerical floor number, use 0 for basement, G for outside, R for roof, and M for mezzanine. The floor number is followed by a dash.

3rd Field: One of the following, followed by a dash:

System designator for the power source (bus).

If the equipment has multiple power sources connected internally, all shall be listed, with the normal power source first.

If the equipment is down-stream of a dual fed SEC, only use the normal power source.

System designator for the system in which the equipment is installed. Reference Appendix 2 for approved system designators. This is used only for any of the following equipment types or systems:

Equipment type:

Valves (VLV, RVP) Back-Flow Preventer Instrumentation (AIT, FIT, LIT, PDIT, PIT, RDSD, RDSM, TIT) Tanks (AT, BT, BFT, CAT, CRT, DT, ET, FT, WT) Chemical Shock Feeder Strainer Heat Exchanger Water Meter Grounding System Any other equipment type without a power source Systems:

Building (EML, ES, ESHR, EWASH, GATE, ID, IM, LIFT, LVR, OHDR, SHRDHD, SPK, VAV, WF, WNA, WNE, WNG) Building Automation System Fire Protection Boiler Domestic Water Fuel Oil Natural Gas Emergency Generators, after the generator and until after multiple power sources are connected.

Breakers on SWBDs, SWGR, and MCCs: The 3rd field is split into two parts:

The SEC designator for the SWBD/SWGR/MCC, followed by a dash The system/power source for the SWBD/SWGR /MCC 4th Field: Sequence Number: One of the following:

Two digits including leading 0s.

Breakers on SWBD, SWGR, MCC: manufacturer’s breaker number.

5th Field: Additional Sequence Number. Two digits and includes leading 0s. This additional sequence number is only used for specifically identified SEC Designators, when required. A dash separates the first and additional sequence numbers. The additional sequence number shall be one of the following:

VAVs: the associated AHU number (AHU SEC, followed by sequence number) All other equipment: Two digits and includes leading 0s.

Examples:

CRAH_3-CD-15 (Computer room air handler on 3rd floor connected to the C & D buses, unit # 15) EDP_1-C-01 (Essential distribution panel on 1st floor connected to C bus, unit # 1) EDP_1-C-01-02 (Subpanel #2 connected to EDP_1-C-01) MTS_1-CD-01 (Manual transfer switch on 1st floor connected to both C & D buses internally, unit # 1) OTB_2-A-03 (Overhead track bus on 2nd floor connected to the A bus, unit # 3) OTB_2-A-03-05 (The 5th plug in unit connected to OTB_2-A-03) PDU_4-B-06 (Power distribution unit on the 4th Floor connected to the B bus, unit # 6) VAV_1-BL-01-AHU9 (VAV associated with an AHU with sequence number 09) ESWGR_G-EG-01 (Emergency switchgear for the emergency generator, located outside, unit # 1) BRKR_G-ESWGR-EG-UPSA2 (Breaker UPSA2 located on ESWGR_G-EG-01) 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 2 → Line 3 → Line 4 → Line 5 →

Figure 8 – Compliant Label

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

Line 1: UID Number, in accordance with paragraph 6.1.

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 and is required.

Line 3: Parent electrical SEC. On the label, it is reflected with the Parent UID Number(s) immediately followed by the circuit or breaker when the circuit or breaker does not have a unique UID.

Line 4: “Common” or “Legacy” name (optional), and has quotes around the name. For valves, this may be used to identify the valve type.

Line 5: BAS Device name (required when applicable). If an SEC has a BAS Device name, which is not the same as the UID, then it is a required field. If a valve is located in a zone, list the zone for the BAS device name. If an SEC does not have a BAS Device name, valve zone, or the BAS Device name matches the UID, then the field is left blank.

Figures 8, 9, and 10 show examples of compliant labels.

← Line 1 →

← Line 3 →

Figure 9 – Compliant Electrical SEC Label

Figure 10 – Compliant Mechanical SEC Label

Mechanical Systems, Equipment, & Components Labeling Mechanical SECs shall be labeled with plastic 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 6.1.1. Ensure all labels are visible after insulation is installed.

← Line 1 →

← Line 3 →

Figure 11 – Compliant Mechanical SEC Label

Figure 12 – Compliant Mechanical SEC Label

Valves & Dampers Facility 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.

Chain-operated valves shall be labeled at the valve body. In addition, labels shall be placed on a small piece of plastic pipe or metal ring through which the chain can easily pass, allowing the label to remain at the bottom of the chain loop.

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.

← Line 1 →

← Line 3 →

Figure 13 – Compliant Valve Label

Figure 14 – Compliant Valve Label

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.

Electrical Systems, Equipment, & ComponentsFigure 15 – Sample IT Power Whip Label

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, IT equipment power circuits (“whips”), and associated receptacle boxes shall be labeled with approved machineprinted 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.

Typical Electrical Systems, Equipment, and Components MCCs, power transformation and switching equipment (transformers, SWGR, SWBDs, and other SEC shall be labeled by section and compartment. See Appendix 3 (Labeling Examples) for a visual representation.

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 3 →

Figure 16 – Compliant Electrical SEC Label

Figure 17 – Compliant Electrical SEC Label

Individual circuit breakers inside PDUs and remote distribution cabinets (RDCs) shall be physically numbered adjacent to each breaker, corresponding to the PDU panel schedule (See Appendix 6). All OTBs shall have a schedule, maintained by maintenance (see Appendix 7). On Line 1, SWGR, SWBDs, RDCs, MCCs, and DPs with sections or sub-panels shall utilize the 4th Field Sequence of the UID Number to differentiate panels. RDCs inherit the sequence number from the parent PDU. Plug in units inherit the OTB UID and utilize the 4th field sequence number to identify the plug in unit. For all other electrical SECs, the 4th Field Sequence Number of the UID Number is not required.

Other Electrical Systems, Equipment, and Components 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.

Security Systems, Equipment, and Components Security systems, equipment, and components, including the automated control systems, integrated security systems, public address systems, mass notification systems shall be labeled in accordance with the DISA property accountability procedures and facility property procedures. Conduit shall be color coded in accordance with Table 1.

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.

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.

UNCLASSIFIED – FOR OFFICIAL USE ONLY

Effective Date: 12 August 2020

* If a System, Equipment, or Component is part of a Critical electrical/UPS bus, then the SEC Designator shall be preceded by the letter ‘U’; if part of an Essential system, then the SEC Designator shall be preceded by the letter ‘E’; e.g., Critical SWBD = USWBD and Essential Distribution Panel = EDP. For Switchgear, ESWGR is used before the UPS, USWGR is used after the UPS.

The following are legacy SED designators. These designators are no longer used, however equipment with these designators do not require relabeling.

Table 4 – Legacy SEC Designator

System Designator List The following is a list of System Designators. The power source is used for the system designator unless the component does not have a power source, or as defined in paragraph 6.1. The intent of this list is to provide guidance and consistency in labeling of systems, equipment and components.

UNCLASSIFIED – FOR OFFICIAL USE ONLY

Effective Date: Draft

* Dual bus is only used when the equipment has multiple feeds internal to the equipment. The normal power source for dual fed power is listed first. The normal power source is used for downstream equipment.

The following are legacy system designators. These designators are no longer used, however equipment with these designators do not require relabeling.

Table 6 – Legacy SEC Designator

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 compartment will be labeled both with a numeric-alpha number and a downstream designator.

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.

Compartment Labeling Each compartment shall be labeled in a sequential order. If the manufacturer labels the compartments, then their standard shall be followed. If not provided by the manufacturer, then the compartments shall be labeled using a numeric-alpha convention; numerically left to right, alpha top to bottom, as shown in Figure 18. The label itself shall be placed on the bottom right of each compartment and be in accordance with this document, with an exception of a font size of 48.

Each compartment shall also be labelled with its Child or ‘To’ UID Number in place of the parent power source on line 3 of the label, designating the downstream system, equipment, or component that it feeds. This label shall be placed on or immediately above the compartment. This label shall be in accordance with paragraph 4.1 and Table 2. All sections shall be labelled. Empty sections shall be labeled as Empty and Spare sections shall be labeled as spare.

Figure 18 – Essential Switchgear

Switchboard, and Large Panelboard Labeling Example

Figure 19 – Panelboard

Notes:

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

Panel Schedule Labeling Example

Figure 20 – Electrical Panel

Distribution Panel Schedule

Panel Notes:

Figure 21 – Panel Schedule Template

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 20, 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 21 reflects the standard panel schedule template

PDU and RDC Schedule Labeling Example

Figure 22 – PDU Panel

Appendix 6 applies to PDUs and RDCs 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 and will match the color code for their respective electrical feed.

For inline or single panels, circuit numbers shall start with one and proceed sequentially. For split systems, as pictured above, circuit numbers shall start with odd numbers on the left hand breakers and even numbers on the right hand breakers.

Each panel shall be numbered separately and sequentially, as shown above Circuit number label size is approximate Circuit number labels shall be permanently attached and designed to withstand wear, erosion, and corrosion, and to preclude accidental removal The panel schedule shall mirror the numbering convention on the circuit number labels The heading of the panel schedule shall include the UID and Panel # The panel schedule shall include a Rack Name (Grid Location) and Date (when rack was installed) for each circuit, providing necessary detail for maintenance personnel Circuit labeling shall include all available distribution circuits whether used, spare, or space. The panel schedule shall also capture this detail.

PDU/RDC Panel Schedule

Panel Notes:

Figure 23 – PDU/RDC Panel Schedule Template

RDC Panel Schedule

Panel Notes:

Figure 24 – RDC Panel Schedule Template

OTB Schedule Example

Appendix 7 applies to OTBs Each OTB plug in unit shall be numbered separately and sequentially, however the actual installation may not be sequential.

Plug in unit labels shall be permanently attached and designed to withstand wear, erosion, and corrosion, and to preclude accidental removal The heading of the schedule shall include the UID of the OTB.

The OTB schedule shall include the plug in unit UID, associated Rack Name (Grid Location) and Date (when rack was installed) for each plug in unit connected to the OTB , providing necessary detail for maintenance personnel

OTB Schedule

Notes:

Figure 25 – OTB Schedule Template

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