26 05 53 - Identification For Electrical Systems.pdf

WVA Specification for Identification of Electrical Systems

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SECTION 26 05 53

IDENTIFICATION FOR ELECTRICAL SYSTEMS

PART 1 – GENERAL

1.1 DESCRIPTION

A. Scope:

1. CONTRACTOR shall provide all labor, materials, equipment, and incidentals shown, specified, and required to furnish and install identification for electrical apparatus and electrical Work.

B. Related Sections:

1. Section 26 05 19, Low Voltage Electrical Power Conductors and Cables.

2. Section 26 05 13, Medium Voltage Cables.

1.2 QUALITY ASSURANCE

A. Regulatory Requirements:

1. NEC Article 110, Requirements for Electrical Installation.

2. NEC Article 210, Branch Circuits.

3. NEC Article 215, Feeders.

4. NEC Article 504, Intrinsically Safe Systems.

5. NEC Article 700, Emergency Systems.

6. NEC Article 701, Legally Required Standby Systems.

7. NEC Article 702, Optional Standby Systems.

8. 40 CFR 1910.145 (OSHA) – Specification for Accident Prevention Signs and Tags.

9. NFPA 70E, Electrical Safety in the Workplace.

10. NEMA WC 71, Power Cables Rated 2000V or Less for the Distribution of

Electrical Energy.

11. NEMA WC 74, 5-46kV Shielded Power Cable for Use in the Transmission

& Distribution of Electrical Energy.

1.3 SUBMITTALS

A. Action Submittals: Submit the following:

1. Shop Drawings: Submit the following:

a. Complete description and listing of proposed electrical identification and electrical identification devices for associated equipment or systems.

b. Conduit and wire identification numbering system and equipment signage.

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2. Product Data:

a. Manufacturer’s literature, cut sheets, specifications, dimensions and technical data for all products proposed under this Section.

PART 2 – PRODUCTS

2.1 MANUFACTURED UNITS

A. Engraved Identification Devices (Nameplates and Legend Plates):

1. Nameplates:

a. Laminated thermoset plastic, 1/16-inch thick, engraved condensed block black lettering on white background, square corners, and beveled front edges, or match existing.

b. Size: As required.

c. Letter Size: Minimum 3/16-inch.

d. Nameplates one-inch or less in height shall have one mounting hole at each end. Nameplates greater than one-inch in height shall have mounting holes in the four corners.

2. Legend Plates:

a. Legend plates for pushbuttons, pilot lights, selector switches, and other panel-mounted devices shall be large size with dimensions of approximately 2-7/16 inches wide by 2-13/32 inches tall (Allen

Bradley large automotive size), plastic, custom engraved with black letters on white background.

1) Provide standard-size legend plates where devices are mounted on motor control centers and spacing of devices precludes using automotive-size legend plates.

b. Lettering size and line weight shall be the same for all legend plates on the same panel or enclosure. Maximum size shall be 1/4-inch and minimum size shall be 1/8-inch.

B. Safety Signs and Voltage Markers:

1. Provide high voltage signs for equipment operating over 600 volts.

2. Unless otherwise shown or indicated, high voltage safety signs shall be a minimum of 10 inches high by 14 inches wide, of fiberglass reinforced plastic, and conform to 40 CFR 1910.145. Signs shall resist fading from exposure to temperature extremes, ultraviolet light, abrasive, and corrosive environments, and shall read, “DANGER – HIGH VOLTAGE – KEEP

OUT”.

a. Mounting hardware shall be Type 316 stainless steel.

b. Products and Manufacturers: Provide one of the following:

1) B-120-45471 by Brady.

2) Or pre-approved equal.

3. High voltage safety signs for installation on indoor equipment shall be either pressure-sensitive acrylic or vinyl, and shall be at least 10 inches high by 14

2118173 26 05 53-3 inches wide, conform 40 CFR 1910.145, and shall read, “DANGER – HIGH

VOLTAGE – KEEP OUT”.

a. Products and Manufacturers: Provide one of the following:

1) B-302-84084 by Brady.

2) Or pre-approved equal.

4. Cable tray safety signs shall be pressure-sensitive vinyl conforming to 40

CFR 1910.145, 5 inches by 3.5 inches in size, and shall read, “DANGER –

HIGH VOLTAGE”..

a. Products and Manufacturers: Provide one of the following:

1) B-302-86139 by Brady.

2) Or pre-approved equal.

5. Low voltage safety signs shall be pressure-sensitive vinyl conforming to 40

CFR 1910.145, five inches by 3.5 inches in size, and shall read, “DANGER

– 480 VOLTS”.

a. Products and Manufacturers: Provide one of the following:

1) B-302-86060 by Brady.

2) Or pre-approved equal.

C. Arc-flash Safety Signs:

1. Warning signs shall be adhesive-backed polyester.

2. Warning signs shall read, “Warning – Arc Flash and Shock Hazard.

Appropriate PPE Required. Arc flash warning signs shall indicate the flash protection boundary, incident energy in calories per square centimeter, hazard level, description of required protective clothing, shock hazard, limited approach boundary, restricted approach boundary, prohibited approach boundary, and equipment name.

3. Products and Manufacturers: Provide one of the following:

a. Brady.

b. Or pre-approved equal.

D. Voltage System Identification Directories:

1. General:

a. Directories shall be laminated thermoset plastic, 1/16-inch thick, engraved block black letters on white background, square corners, and beveled front edges.

b. Directories shall identify all voltage systems within building or structure.

c. Directories shall list the colors that identify ungrounded and grounded conductors of each system.

d. Colors shall be in accordance with Section 26 05 19, Low Voltage

Electrical Power Conductors and Cables, Section 26 05 13, Medium-

Voltage Cables.

e. Example Directory Text:

Voltage System Identification

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System A, B, C Neutral

277/480 Brown, Orange, Yellow Gray

120/208 Black, Blue, Red White

2. Large directories for rooms shall have a minimum text height of 1/2-inch.

3. Small directories for equipment shall have a minimum text height of 1/4-inch.

E. Conduit Labels:

1. Products and Manufacturers: Provide one of the following:

a. B-915-xxxxx by Brady.

b. Or pre-approved equal.

2. Shall be pre-tensioned acrylic/vinyl construction coiled to completely encircle conduit for conduit up through five-inch diameter, or pre-molded to conform to circumference of conduit six-inch diameter and larger.

3. Attach strap-on style for six-inch diameter conduit with stainless steel springs.

4. Shall be blank for use with custom printed labels.

5. Custom Labels:

a. Shall have black lettering on yellow background.

b. Shall not contain abbreviations in legend.

c. Shall be custom printed on continuous tape with permanent adhesive using thermal printer specified below.

F. Wire Identification:

1. Heat Shrinkable Wire and Cable Labeling System:

a. White heat-shrinkable irradiated polyolefin shrink-on sleeves. Labels shall be thermal printed. Labels shall be at least two inches wide.

b. Products and Manufacturers: Provide one of the following:

1) B-341 PS-xxx-2W by Brady.

2) Or pre-approved equal.

2. Wrap-Around Wire and Cable Labeling System:

a. Self-laminating white/transparent self extinguishing vinyl strips.

Length shall be sufficient to provide at least 2.5 wraps. Labels shall be thermally printed and at least two inches wide.

b. Products and Manufacturers: Provide one of the following:

1) THT-XX-427 by Brady.

G. Thermal Printing System:

1. Utilize thermal transfer process to provide non-smearing labels and markers.

2. Wire and Cable Markers:

a. Portable, Products and Manufacturers: Provide one of the following:

1) TLS2200 by Brady.

2) Or equal.

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b. Desktop, Products and Manufacturers: Provide one of the following:

1) 200M by Brady.

3. Cable Markers:

a. Portable, Products and Manufacturers: Provide one of the following:

1) Handimark by Brady.

2) Or pre-approved equal.

b. Desktop, Products and Manufacturers: Provide one of the following:

1) Labelizer PLUS by Brady.

2.2 FABRICATION

A. Engraved Identification Devices (Nameplates and Legend Plates):

1. Nameplate and legend plate text is preliminary and subject to change pending final review and approval of nomenclature by CONTRACTING

OFFICER after start-up and testing.

PART 3 – EXECUTION

3.1 INSTALLATION

A. Provide electrical identification in accordance with manufacturer recommendations and as required for proper identification of equipment and materials.

B. Engraved Identification Devices (Nameplates and Legend Plates):

1. Unless otherwise specified, attach permanent nameplates with permanent adhesive and with 3/16-inch diameter, round head, stainless steel machine screws into drilled and tapped holes.

2. Provide nameplate with 1.5-inch letters to identify each console, cabinet, panel, or enclosure as shown or indicated.

3. Provide nameplates for field-mounted motor starters, disconnect switches, manual starter switches, pushbutton stations, and similar equipment operating components, which shall describe motor or equipment function and circuit number.

4. Provide nameplates with 1/2-inch letters to identify each junction and terminal box shown or indicated.

5. On switchgear, provide nameplates for each main and feeder circuit including control fuses, and for each indicating light and instrument.

a. Provide nameplate with 1.5-inch letters giving switchgear designation, voltage rating, ampere rating, short circuit rating, manufacturer’s name, general order number, and item number.

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b. Identify individual door for each compartment with nameplate giving item designation and circuit number.

C. Safety Signs and Voltage Markers:

1. Provide safety signs and voltage markers on and around electrical equipment as shown or indicated.

a. Install rigid safety signs using stainless steel fasteners.

b. Clean surfaces before applying pressure-sensitive signs and markers.

2. Install high voltage safety signs on all equipment doors providing access to uninsulated conductors, including terminal devices, greater than 600 volts.

D. Voltage System Identification Directories

1. Provide voltage system identification directories as required by NEC Article

210 and NEC Article 215.

E. Arc-flash Safety Signs:

1. Provide arc-flash safety signs as required by NEC Article 110.

F. Conduit Labels:

1. Provide conduits with conduit labels unless otherwise shown or indicated.

2. Do not label flexible conduit.

3. Do not label exposed single conduit runs of less than 25 feet between local disconnect switches and their associated equipment.

4. Conduit labels shall indicate the following information:

a. Contract Number: Alphanumeric, three or four digits, as applicable.

b. Conduit Number: Alphanumeric as shown on the Drawings, as assigned by CONTRACTOR for unlabelled conduits, and in accordance with approved submittals.

5. Conduits that contain intrinsically safe wiring shall have an additional pipe marker provided that has blue letters on white background and reads, “INTRINSICALLY SAFE WIRING”.

a. Install intrinsically safe pipe markers in accordance with NEC Article

504 along entire installation. Spacing between labels shall not exceed

25 feet.

6. Provide conduit labels at the following locations:

a. Where each conduit enters and exits walls, ceilings, floors, or slabs.

b. Where conduit enters or exits boxes, cabinets, consoles, panels, or enclosures, except pull boxes and conduit bodies used for pull boxes.

c. At maximum intervals of 50 feet along length of conduit.

7. Orient conduit labels to be readable.

G. Wire and Cable Identification:

1. Color-coding of insulated conductors shall comply with Section 26 05 19, Low Voltage Electrical Power Conductors and Cables, Section 26 05 13, Medium Voltage Cables.

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2. Use heat-shrinkable wire labels where wire or cable is terminated. Use wrap-around labels where wire or cable is to be labeled but is not terminated.

3. Do not provide labels for the following:

a. Bare (uninsulated) conductors, unless otherwise shown or indicated as labeled.

4. Provide wire and cable labels for the following:

a. New, rerouted, or revised wire or cable.

b. Insulated conductors.

d. Wire and cable terminations:

1) Wire labels shall be applied between 1/2-inch and one inch of completed termination

2) Apply cable labels between 1/2-inch and one inch of cable breakout into individual conductors.

a) Label individual conductors in a cable after breakout as specified for wires.

e. Wire or cable exiting cabinets, consoles, panels, terminal boxes, and enclosures.

1) Label wires or cables within two inches of entrance to conduit.

f. Wire or cable in junction boxes and pull boxes

1) Label wires or cables within two inches of entrance to conduit.

g. Wire and cable installed in cable tray.

1) Wire and cable shall have labels at maximum intervals of 20 feet.

h. Wire and cable installed without termination in electrical manholes.

1) Wire and cable shall have wrap-around labels applied within one foot of exiting manhole.

5. Wire and Cable Identification System:

a. Wire and cable labels shall be imprinted with an identifying designator.

1) Wire and cable extending between two devices or items and that does not undergo a change of function shall be identified by a single unique designator as specified below.

b. Field Wiring:

1) Unique wire or cable designator shall consist of:

a) Three left-most characters shall consist of the Contract number under which wiring or cable was installed.

b) Fourth character from the left shall be an asterisk (*), a plus sign (+) or a hyphen (-). Do not use other punctuation symbols in a wire designator.

c) Remaining characters shall be alphanumeric and make wire designator unique.

d) Numbering shall reflect actual designations used in the Work and shall be documented in record documents.

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2) Power distribution connections 480VAC/250VDC and greater shall be identified with the unique designator as specified in 5.b.1 above, plus the following:

a) Manufacturer, cable size, voltage, cable route, phase and date installed.

b) Cable route designator shall include Loop number, circuit number and intended “From-To” description on cable. From-

To designator should reflect physical termination substation or panel location in the cable path, (Examples: 1B1 to 1B2, 2B2 to 2B2A or 1A5A to DP2, etc). If cable diameter cannot support a multi-line identifier, place identifier information on a single line separating key information by a double asterisk.

c. Cabinet, Console, Panel, and Enclosure Wiring, Internal:

1) New Cabinets, Consoles, Panels, and Enclosures:

a) Wire and cable inside cabinets, consoles, panels, and enclosures shall have designators as specified.

6. Modified Cabinets, Consoles, Panels, and Enclosures:

a. New or rerouted wire or cable in existing cabinets, consoles, panels, and enclosures shall be labeled as shown on the Drawings or be assigned a ten-character designator equivalent to field wire designator.

H. Terminal Strip Labeling:

1. Label panel side of terminal to match panel wire number.

2. Label field side of terminal to match field wire number. Terminal number shall not include the Contract number.

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