[SUBMITTAL INFORMATION]
DESIGN A/E NOTE - GUIDE SPECIFICATION CONVENTIONS
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SECTION 260553
IDENTIFICATION FOR ELECTRICAL SYSTEMS
(Edited from DeCA June 2017 Design Criteria)
Verify that Section titles referenced in this Section are correct for this Project's Specifications; Section titles may have changed.
PART 1 - GENERAL
1.1 SUMMARY
- Section Includes: Electrical identification materials and devices required to comply with ANSIC2, NFPA70, OSHA standards, and Authorities Having Jurisdiction.
1.2 SUBMITTALS
- Product Data: For each electrical identification product indicated.
1.3 QUALITY ASSURANCE
Retain paragraph below for projects with electrical utility work, including underground and overhead distribution and medium-voltage wiring.
- Comply with ANSIC2.
- Comply with NFPA70.
- Comply with ANSIA13.1 and NFPA70 for color-coding.
- Comply with ANSI Z535.
PART 2 - PRODUCTS
2.1 RACEWAY AND CABLE LABELS
- Comply with ANSIA13.1, Table3, for minimum size of letters for legend and for minimum length of color field for each raceway and cable size.
- Color: Black letters on orange field.
- Legend: Indicates voltage.
Consider alternatives before specifying self-adhesive product in paragraph below.
- Adhesive Labels: Preprinted, flexible, self-adhesive vinyl with legend overlaminated with a clear, weather- and chemical-resistant coating.
- Pretensioned, Wraparound Plastic Sleeves: Flexible, preprinted, color-coded, acrylic band sized to suit the diameter of the line it identifies and arranged to stay in place by pretensioned gripping action when placed in position.
Consider alternatives before specifying self-adhesive product in paragraph below.
- Colored Adhesive Tape: Self-adhesive vinyl tape not less than 3 mils thick by 1 to 2 inches wide.
- Underground-Line Warning Tape: Permanent, bright-colored, continuous-printed, vinyl tape.
- Not less than 6 inches wide by 4 mils thick.
- Compounded for permanent direct-burial service.
- Embedded continuous metallic strip or core.
- Printed legend indicating type of underground line.
Consider alternatives before specifying self-adhesive product in paragraph below.
- Tape Markers: Vinyl or vinyl-cloth, self-adhesive, wraparound type with preprinted numbers and letters.
- Aluminum, Wraparound Marker Bands: Bands cut from 0.014-inch- thick aluminum sheet, with stamped or embossed legend, and fitted with slots or ears for permanently securing around wire or cable jacket or around groups of conductors.
- Plasticized Card-Stock Tags: Vinyl cloth with preprinted and field-printed legends. Orange background, unless otherwise indicated, with eyelet for fastener.
- Aluminum-Faced, Card-Stock Tags: Weather-resistant, 18-point minimum card stock faced on both sides with embossable aluminum sheet, 0.002 inch thick, laminated with moisture-resistant acrylic adhesive, punched for fasteners, and preprinted with legends to suit each application.
- Brass or Aluminum Tags: 2 by 2 by 0.05-inch metal tags with stamped legend, punched for fastener.
2.2 NAMEPLATES AND SIGNS
- Safety Signs: Comply with 29CFR, ChapterXVII, Part1910.145.
- Danger, Warning, and Caution Labels: Where danger, warning, or caution labels are required, field applied labels shall be permanently affixed to the equipment or wiring method, and shall be of sufficient durability to withstand the environment. Labels shall adequately warn of the particular hazard using effective words, colors, symbols. Labels shall conform to ANSI Z535.
- Danger: Danger indicates an imminently hazardous situation, which if not avoided, would result in death or serious injury. Danger label shall have a safety alert symbol (exclamation point in a triangle), a signal word “DANGER”, and warning text (eg. “HIGH VOLTAGE – KEEP OUT”). Danger warnings shall have red background and red background and red exclamation point.
- Warning: Warning indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. Warning labels shall have a safety alert symbol (exclamation point in a triangle), and have a sign word “WARNING”. Warning labels shall have an orange background and exclamation point.
- Caution: Caution indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. Caution labels shall have a safety alert symbol (exclamation point in a triangle), and have a signal word “CAUTION”. Caution labels shall have a yellow background and exclamation point.
- Engraved Plastic Nameplates and Signs: Engraving stock, melamine plastic laminate, minimum 1/16 inch thick for signs up to 20 sq. in. and 1/8 inch thick for larger sizes.
- Engraved legend with black letters on white face.
- Punched or drilled for mechanical fasteners.
- Baked-Enamel Signs for Interior Use: Preprinted aluminum signs, punched or drilled for fasteners, with colors, legend, and size required for the application. 1/4 inch grommets in corners for mounting.
- Exterior, Metal-Backed, Butyrate Signs: Weather-resistant, nonfading, preprinted, cellulose-acetate butyrate signs with 0.0396-inch galvanized-steel backing; and with colors, legend, and size required for the application. 1/4 inch grommets in corners for mounting.
- Fasteners for Nameplates and Signs: Self-tapping, stainless-steel screws or No.10/32, stainless-steel machine screws with nuts and flat and lock washers.
- Inscription:
- Nameplates shall adequately describe the function or use of the particular equipment involved.
- Nameplates for panelboards, switchboards, motor control centers, control panels, switchgear, etc., shall include the equipment designation, voltage and phase of the supply and source of power. For example:
PANEL A
277/480V, 3P, 4W
FED FROM MDP
- Nameplates for transformers shall include the equipment designation, primary and secondary voltage, configuration, KVA rating, and source of power. For example:
XFMRT1 75KVA
480 DELTA TO 208Y/120
FED FROM PANEL H1
- Nameplates for disconnect switches and other devices serving an individual load shall include the name of the device being served and the source of power. For example:
AHU-2
FED FROM PANEL HM
- Nameplates for individual circuit breakers/fused switches in switchboards, switchgear, and motor control centers shall include the equipment designation. For example:
XFMR T1
2.3 MISCELLANEOUS IDENTIFICATION PRODUCTS
- Cable Ties: Fungus-inert, self-extinguishing, one-piece, self-locking, Type6/6 nylon cable ties.
- Minimum Width: 3/16 inch.
- Tensile Strength: 50 lb minimum.
- Temperature Range: Minus 40 to plus 185 degF.
- Color: According to color-coding.
- Paint: Formulated for the type of surface and intended use.
- Primer for Galvanized Metal: Single-component acrylic vehicle formulated for galvanized surfaces.
- Primer for Concrete Masonry Units: Heavy-duty-resin block filler.
- Primer for Concrete: Clear, alkali-resistant, binder-type sealer.
- Enamel: Silicone-alkyd or alkyd urethane as recommended by primer manufacturer.
PART 3 - EXECUTION
3.1 INSTALLATION
Coordinate two paragraphs below with Drawings.
- Identification Materials and Devices: Install at locations for most convenient viewing without interference with operation and maintenance of equipment.
- Lettering, Colors, and Graphics: Coordinate names, abbreviations, colors, and other designations with corresponding designations in the Contract Documents or with those required by codes and standards. Use consistent designations throughout Project.
- Sequence of Work: If identification is applied to surfaces that require finish, install identification after completing finish work.
Delete paragraph below unless self-adhesive products are specified.
- Self-Adhesive Identification Products: Clean surfaces before applying.
Paragraph below contains requirements exceeding those in NFPA70. Delete except for circuits with more than 600V. Edit subparagraphs below to suit Project.
- Circuits with More Than 600V: Identify raceway and cable with "DANGER--HIGH VOLTAGE" in black letters 2 inches high, stenciled with paint at 10-foot intervals over a continuous, painted red background. Identify the following:
- Entire floor area directly above conduits running beneath and within 12 inches of a basement or ground floor that is in contact with earth or is framed above unexcavated space.
- Wall surfaces directly external to conduits concealed within wall.
- All accessible surfaces of concrete envelope around conduits in vertical shafts, exposed in the building, or concealed above suspended ceilings.
- Entire surface of exposed conduits.
- Install painted identification according to manufacturer's written instructions and as follows:
- Clean surfaces of dust, loose material, and oily films before painting.
- Prime surfaces using type of primer specified for surface.
- Apply one intermediate and one finish coat of enamel.
Revise types of signs, labels, and tags in paragraphs below to suit Project.
- Caution Labels for Indoor Boxes and Enclosures for Power and Lighting: Install pressure-sensitive, self-adhesive labels identifying system voltage, panel, and circuit number(s) with black letters on yellow background. Install on exterior of door or cover.
- Paths of Underground Electrical Lines: During trench backfilling, for exterior underground power, control, signal, and communication lines, install continuous underground plastic line marker located directly above line at 6 to 8 inches below finished grade. Where width of multiple lines installed in a common trench or concrete envelope does not exceed 16 inches overall, use a single line marker. Install line marker for underground wiring, both direct-buried cables and cables in raceway.
Depending on Project, paragraph below may require color-coding exceeding NFPA70 requirements. Delete where not required by Project or by Code.
If retaining below, edit to indicate extent of color-coding required. Coordinate requirements for color-coding below with related requirements in Division26 Section260526 Grounding and Bonding for Electrical Systems. For existing buildings, clarify if requirements apply to both old and new wiring or to new wiring only. Below applies only to phase conductors. Color-coding of grounded and grounding conductors are dictated by Code.
- Color-Coding of Secondary Phase Conductors: Use the following colors for service, feeder and branch-circuit phase conductors:
- 208/120-V Conductors:
- Phase A: Black.
- Phase B: Red.
- Phase C: Blue.
- Neutral: White.
- 480/277-V Conductors:
- Phase A: Brown.
- Phase B: Orange.
- Phase C: Yellow.
- Neutral: Gray.
- Factory apply color the entire length of conductors, except the following field-applied, color-coding methods may be used instead of factory-coded wire for sizes larger than No.10AWG:
- Colored, pressure-sensitive plastic tape in half-lapped turns for a distance of 6 inches from terminal points and in boxes where splices or taps are made. Apply last two turns of tape with no tension to prevent possible unwinding. Use 1-inch- wide tape in colors specified. Adjust tape bands to avoid obscuring cable identification markings.
- Colored cable ties applied in groups of three ties of specified color to each wire at each terminal or splice point starting 3 inches from the terminal and spaced 3 inches apart. Apply with a special tool or pliers, tighten to a snug fit, and cut off excess length.
- Power-Circuit Identification: Metal tags or aluminum, wraparound marker bands for cables, feeders, and power circuits in vaults, pull and junction boxes, manholes, and switchboard rooms.
- Legend: 1/4 inch steel letter and number stamping or embossing with legend corresponding to indicated circuit designations.
- Tag Fasteners: Nylon cable ties.
- Band Fasteners: Integral ears.
- Apply identification to conductors as follows:
- Conductors to Be Extended in the Future: Indicate source and circuit numbers.
- Multiple Power or Lighting Circuits in the Same Enclosure: Identify each conductor with source, voltage, circuit number, and phase. Use color-coding to identify circuits' voltage and phase.
- Multiple Control and Communication Circuits in the Same Enclosure: Identify each conductor by its system and circuit designation. Use a consistent system of tags, color-coding, or cable marking tape.
- Apply warning, caution, and instruction signs as follows:
- Warnings, Cautions, and Instructions: Install to ensure safe operation and maintenance of electrical systems and of items to which they connect. Install engraved plastic-laminated instruction signs with approved legend where instructions are needed for system or equipment operation. Install metal-backed butyrate signs for outdoor items.
- Emergency Operation: Install engraved laminated signs with white legend on red background with minimum 3/8 inch high lettering for emergency instructions on power transfer, load shedding, and other emergency operations.
Coordinate paragraph below with Specifications for communication, signal, and alarm systems. Delete items not in Project.