Attachment 1: Specifications - Metropolitan Washington Airports ...

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DCA TERMINAL A IMPROVEMENTS (NEAR TERM) 10 AUGUST 2012 TASK ORDER 03: LOBBY IMPROVEMENTS – PKG 4 - CURBSIDE CHECK-IN RONALD REAGAN WASHINGTON NATIONAL AIRPORT PROJECT DT1203 2.2 ELECTRICAL IDENTIFICATION PRODUCTS A. Engraved, Plastic Laminated Labels, Signs, and Instruction Plates: Engraving stock melamine plastic laminate, 1/16-inch minimum thick for signs up to 20 square inches, or 8 inches in length; 1/8-inch thick for larger sizes. Drill holes for mechanical fasteners when mounted indoors. B. Baked Enamel Warning and Caution Signs for Interior Use: Preprinted aluminum signs, punched for fasteners, with colors, legend, and size appropriate to the location. C. Exterior Metal Backed Butyrate Warning and Caution Signs: Weather resistant, nonfading, preprinted cellulose acetate butyrate signs with 20-gage galvanized steel backing, with colors, legend, and size appropriate to the location. Provide 1/4-inch grommets in corners for mounting. D. Fasteners for Plastic Laminated and Metal Signs: Self tapping stainless steel screws or number 10/32 stainless steel machine screws with nuts and flat and lock washers. E. Cable Ties: Fungus inert, self-extinguishing, one piece, self-locking nylon cable ties, 0.18-inch minimum width, 50-lb minimum tensile strength, and suitable for a temperature range from minus 50 deg F to 350 deg F. F. Cable Markers: Provide "E-Z Tag" as manufactured by Almetek Industries Inc., or "Everlast" tags as manufactured by Tech Products Inc. Tags shall consist of 1.0-inch high numerals or letters placed in a tag holder. Tags and holder shall be manufactured from U.V. stabilized nonconductive, non-corrosive polyethylene or equal. Tag holder shall be black and numerals and letters shall be black on yellow background. Numerals and letters shall be oriented either horizontally or vertically depending on orientation of cable. G. Pressure Sensitive Markers for Outdoor Equipment: Provide markers as manufactured by Almetek Industries or William Frick & Company or equal. Provide minimum 1.0-inch high numerals or letters. On medium voltage equipment provide markers that are black on reflective yellow background. On low voltage equipment provide markers which are black on reflective silver background. Markers shall be resistant to U.V. light. PART 3 - EXECUTION 3.1 INSTALLATION A. Lettering and Graphics: Coordinate names, abbreviations, colors, and other designations with corresponding designations specified or indicated. Install numbers, lettering, and colors as approved in submittals and as required by code. B. Install identification products in accordance with manufacturer's written instructions and requirements of NEC. C. Sequence of Work: Where identification is to be applied to surfaces that require finish, install identification after completion of finish work. IDENTIFICATION FOR ELECTRICAL SYSTEMS 26 05 53- 2
DCA TERMINAL A IMPROVEMENTS (NEAR TERM) 10 AUGUST 2012 TASK ORDER 03: LOBBY IMPROVEMENTS – PKG 4 - CURBSIDE CHECK-IN RONALD REAGAN WASHINGTON NATIONAL AIRPORT PROJECT DT1203 D. Medium Voltage Cable Identification: In manholes indicate voltage, feeder number and phase letter on each cable. Inside equipment indicate phase letter on each cable. Install markers on cables after arc proofing is applied. Attach with cable ties. E. Low Voltage Conductor Color-Coding: Provide color coding for as follows: 208/120 Volts Phase 480/277 Volts Black A Yellow Red B Brown Blue C Orange White Neutral Gray Green Ground Green F. Use low voltage conductors with color factory-applied the entire length of the conductors except as follows: 1. The following color-coding methods may be used in lieu of factory color-coded wire for sizes No. 4 AWG and Larger. a. Apply 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 the last two laps of tape with no tension to prevent possible unwinding. G. Provide warning, caution, and instruction signs as follows: 1. Install warning, caution, or instruction signs where required by NEC, where indicated, or where required for safe operation and maintenance of electrical systems. Install engraved plastic laminated instruction signs where instructions or explanations are needed for system or equipment operation. Install butyrate signs with metal backing for outdoor items. Attach signs to outdoor equipment using two-part epoxy cement. H. Provide equipment/system, circuit/device identification as follows: 1. Provide engraved plastic laminate identification markers on electrical equipment. For 240V systems and below provide white lettering on black background. For 480/277V systems, use black lettering on yellow background. Text shall match terminology and numbering specified in the MWAA Design Manual. Apply markers on all of the following: a. Panelboards, electrical cabinets, and enclosures. b. Contactors. c. Transformers. d. Disconnect switches. e. Control equipment. f. Circuit breakers I. Circuit Schedules: For panelboards provide typed circuit schedules with identification of items controlled by each breaker. IDENTIFICATION FOR ELECTRICAL SYSTEMS 26 05 53- 3
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TECHNICAL SPECIFICATIONS VOLUME I O
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