Section 16075 ELECTRICAL IDENTIFICATION NAMEPLATES AND WARNING SIGNS

Section 16075

ELECTRICAL IDENTIFICATION NAMEPLATES AND WARNING SIGNS 

PART 1 - GENERAL

1.1 THE REQUIREMENT

A. The Contractor shall furnish all tools, equipment, material, and supplies and perform all labor required to install nameplates and/or warning signs to identify electrical equipment as indicated on the drawings and specified herein.

1.2 RELATED WORK SPECIFIED ELSEWHERE

A. The requirements of the following sections and divisions apply to the work of this Section. B. Other sections of the Specifications, not referenced below, shall also apply to the extent

required for proper performance of this work.

1. Division 11 Equipment, Applicable Sections

2. Division 16 Electrical, Applicable Sections

3. Division 17 Instrumentation and Control, Section 17300

1.3 REFERENCE SPECIFICATIONS, CODES AND STANDARDS

A. All work specified herein shall conform to or exceed the applicable requirements of the referenced portions of the following publications to the extent that the provisions thereof are not in conflict with other provisions of these specifications.

B. Comply with the current provisions of the following codes and standards.

1. Codes and Standards

NFPA National Fire Protection Agency (NFPA) – 70

National Electrical Code (NEC), latest adopted version

NEC National Electrical Code (NEC), latest adopted edition

OSHA Occupational Safety and Health Administration

(OSHA) California Code of Regulations

Owner Tagging Procedure Owner standards for instrument and equipment identification and tagging

Specification 17075 Valve, Panel, and Instrument Nameplates

PART 2 - PRODUCTS

2.1 NAMEPLATES AND WARNING SIGNS

A. Nameplates: All nameplates shall be black lamicoid with white letters of approved size when located indoors, and shall be engraved stainless steel when located outdoors, and shall be fastened to the device or enclosure with round head, stainless steel screws. Any equipment for which a nameplate is required, but without a contract document designation shall be identified in accordance with the Owner Tagging Procedure. Contact the Engineer for help in establishing the correct designation. See Section 17300 for detailed information on material, thickness, size, hole size, and mounting.

1. All switchgear, switchboards, distribution panels, lighting panels, unit substations, transformers, MCCs, control panels, etc. shall have nameplates in accordance with the designations given on the Contract Documents. The nameplates shall be installed on the front and back of the enclosure (if backside access is available) to clearly identify each compartment, power source, etc. This shall apply to all equipment installed and/or modified per these Contract Documents.

2. All switchgear, MCCs and lighting panels shall have a large nameplate with

3/4-inch high letters for the designation given on the Contract Documents single- line diagrams. All motor controllers or individual units within MCCs and switchgear shall have a nameplate with ¼-inch high letters showing the circuit number and equipment designation in accordance with the Contract Documents single-line diagrams.

3. All control panels and terminal board panels shall have large nameplates with

3/4-inch high letters for the panel designation, and nameplates with 3/16-inch high letters for each control and indicating device in accordance with the Contract Documents.

4. Visible, permanent engraved nameplates shall be provided identifying each instrument, instrument switch, meter, relay, control switch, indicating light, circuit breaker compartment, potential transformer compartment, fuse block, and auxiliary compartment. Equipment and terminal blocks within control panels, boxes and compartments shall be permanently identified with engraved nameplates. This shall include the backside of door- or panel-mounted items. The backside engraved nameplate shall read the same as the front engraved nameplate. Protective relays shall be designated as to use, the phase to which connected and shall include the ANSI C 37.2 device function number; e.g., Phase A Overcurrent Relay, Device 51.

B. Warning Signs: All warning signs shall be in accordance with Occupational Safety and Health Administration (OSHA) regulations and shall be suitable for exterior use when installed outdoors. The warning signs shall be fastened with round head, Type 316 stainless steel screws or bolts, located and mounted in a manner acceptable to the Engineer. All warning signs shall be 7 inches high by 10 inches wide unless otherwise noted, and on 1/16-inch thick plastic or similar acceptable material. The signs specified below shall be installed on the front and back of the enclosure (if backside access is available to the enclosure) of each electrical distribution equipment and control equipment to clearly identify each compartment, power source, etc. This shall apply to all equipment installed and/or modified per these Contract Documents.

1. Permanent and conspicuous warning signs shall be mounted on all equipment, doorways to equipment rooms, pull boxes, manholes, etc. where the operating voltage exceeds 600 V. High voltage warning signs shall be colored red and white and shall read:

DANGER

480 VOLTS KEEP OUT

2. Rear access panels or doors of cubicles containing power conductors shall include a large “DANGER 480 VOLTS INSIDE” nameplate of red background and 1 inch high minimum white lettering.

3. A door-mounted sign made of laminated plastic with white letters on a red background shall be provided on each compartment in which multiple voltage sources will be terminated. The sign shall read: "Caution - This Unit Contains Foreign Voltage Sources."

4. Permanent warning signs shall be mounted at all mechanical equipment which can be started automatically or be started from remote locations. Automatic or remote controlled equipment warning signs shall be colored yellow and black and shall read:

CAUTION

THIS EQUIPMENT STARTS AUTOMATICALLY OR

BY REMOTE CONTROL

5. Provide arc-flash warning labels as follows on all new and existing electrical distribution equipment. The warning labels shall be provided for each switchgear, switchboard, panelboard, enclosed circuit breakers, and motor control center (MCC). The labels shall be incompliance with NFPA 70E listing clothing requirements, shock hazard boundaries, and PPE requirements similar to below example:

Arc Flash Hazard Boundary (Dc)	7.2 ft
Incident Energy (Ed)	15.8 cal/cm2
Working Distance	18.0 in
Shock Hazard Exposure	480 VAC
Shock Hazard when covers removed
Class 00 Insulating Gloves
V-rating	500 VAC
Limited Approach Boundary	3.5 ft
Restricted Approach Boundary	1.0 ft
Prohibited Approach Boundary	0.1 ft
Source Protective Device	STS400
Equipment	MCC-STS
Hazard Category	3
Minimum PPE Requirements	A total clothing system consisting of FR shirt and pants and/or FR coveralls and/or arc flash coat and pants (clothing system minimum arc rating of 40)

2.2 CIRCUIT IDENTIFICATION

A. Raceway Identification: All raceways, any channel, conduit, etc. that is greater than 50 feet in length or where conduit terminations are out of sight from each other designed for holding wires, cables or bus bars, shall be tagged at all terminations. The numbering system to identify raceways shall consist of two parts. Example: P137-P103. P137 indicates Job No. P1-37; the same Job No. is used for all conduit installed by the project. P103 indicates the unique designation as shown on the drawings or the conduit schedule. .

1. Raceway marker tags shall be 0.036-inch minimum thickness, be made of solid brass and the raceway number shall be stamped in 3/16-inch minimum height characters. Tags shall be attached to the raceway with Type 316 stainless steel wire.

2. All exposed raceways with conductors rated greater than 600 V shall be marked every 30 feet with 1-inch high letters indicating the actual system operating voltage (e.g., 12,470 Volts). Labels shall be vinyl plastic as manufactured by Brady, Seton, or equal.

B. Conductor and Cable Tags

1. Conductor and Cable Identification: Each cable or conductor shall be identified with circuit identification markers in each pull box, manhole, panelboard, cable tray or termination. Each cable or conductor shall be identified with an approved, yellow or white tubing-type shrink-on wire marker. The color white is used except yellow tubing shall be installed on conductors that bring foreign voltage into the panel. Note that there may be a white wire tag at the source end and a yellow tag at the end where the conductor would be considered to have a foreign voltage. The wire sleeve should only be slightly shrunk to keep the tubing from slipping down the wire but loose enough to allow the wire tag to be rotated after it is installed so it can be made more readable. Tags relying on adhesives or taped- on markers are not acceptable. The cable marker will consist of two elements:

1) A FROM-TO line showing the termination enclosures for each end of the cable and 2) a two-part number with the first part the Job No. and the second part the Cable Schedule ID. The conductor marker will consist of three elements: 1) The immediate terminal number, 2) a ">", and 3) the destination panel, terminal block and terminal number. See Owner Example Contractor-furnished Interconnection Wiring Diagram with Wire and Cable Tag Standard for an example drawing. Cables shall also be tagged at all jacket end points and within 12 inches of entering a conduit from a cable tray. This identification is applicable to all power, control, alarm, and instrumentation conductors, and shall correspond to the single-line diagram circuit numbers and signal cable pair designations shown on the Contract Documents.

2. Manufacturer

a. Individual conductor identification markers shall be slip-on PVC type, as manufactured by Brady, Thomas and Betts, or equal.

b. Markers for other cables shall be B-292 or B-500 vinyl as manufactured by Brady, Thomas and Betts, or equal.

C. Clear identification of each compartment, power source, etc. shall be provided on the front and back of the electrical distribution equipment enclosures and control panel enclosures. This shall apply to all equipment installed and/or modified per these Contract Documents.

D. Color Coding: The three-phase conductors for power circuits shall be identified at each manhole, pull box and at all switchgear, panelboards, motor control centers, switchboards, etc. as Phases A, B and C. Phase A shall be brown, Phase B shall be orange, and Phase C shall be yellow. The neutral conductor shall be white.

PART 3 - EXECUTION

3.1 GENERAL

A. The Contractor shall coordinate the installation of electrical equipment so all equipment is identified in accordance with these specifications.

END OF SECTION