15R01vol3.pdf

Chatham County, Georgia

Solicitation Number

W912HN-15-R-0001

SHEP Raw Water Storage Impoundment Volume 3 of 3: Specifications, Divisions 26 through 43 and Appendices August 2015

U.S. ARMY ENGINEER DISTRICT, SAVANNAH

CORPS OF ENGINEERS

100 WEST OGLETHORPE AVENUE

SAVANNAH, GEORGIA 31401-3640

US Army Corps of Engineers Savannah District

SHEP Raw Water Storage Impoundment 15R01 Chatham County, GA

PROJECT TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

01 11 00 SUMMARY OF WORK

01 30 00 ADMINISTRATIVE REQUIREMENTS

01 32 01.00 10 PROJECT SCHEDULE

01 33 00 SUBMITTAL PROCEDURES

01 35 26 GOVERNMENTAL SAFETY REQUIREMENTS

01 42 00 SOURCES FOR REFERENCE PUBLICATIONS

01 45 00.00 10 QUALITY CONTROL

01 45 00.10 10 QUALITY CONTROL SYSTEM (QCS)

01 50 00 TEMPORARY CONSTRUCTION FACILITIES AND CONTROLS

01 57 20.00 10 ENVIRONMENTAL PROTECTION

01 62 35 RECYCLED/RECOVERED/BIOBASED MATERIALS

01 74 19 CONSTRUCTION AND DEMOLITION WASTE MANAGEMENT

01 78 00 CLOSEOUT SUBMITTALS

01 78 23 OPERATION AND MAINTENANCE DATA

01 91 00 COMMISSIONING

DIVISION 03 - CONCRETE

03 11 13.00 10 STRUCTURAL CAST-IN-PLACE CONCRETE FORMING

03 15 00.00 10 CONCRETE ACCESSORIES

03 20 00.00 10 CONCRETE REINFORCING

03 30 00.00 10 CAST-IN-PLACE CONCRETE

03 35 00.00 10 CONCRETE FINISHING

03 39 00.00 10 CONCRETE CURING

03 45 00 PRECAST CONCRETE BUILDING

03 45 10 PRECAST CONCRETE MANHOLES AND STRUCTURES

DIVISION 04 - MASONRY

04 20 00 MASONRY

DIVISION 05 - METALS

05 05 23 WELDING, STRUCTURAL

05 21 16 LONGSPAN STEEL JOIST FRAMING

05 30 00 STEEL DECKS

05 50 13 MISCELLANEOUS METAL FABRICATIONS

05 50 14 STRUCTURAL METAL FABRICATIONS

05 51 33 METAL LADDERS

DIVISION 06 - WOOD, PLASTICS, AND COMPOSITES

06 10 00 ROUGH CARPENTRY

DIVISION 07 - THERMAL AND MOISTURE PROTECTION

07 11 13 BITUMINOUS DAMPPROOFING

07 19 00 WATER REPELLENTS

07 21 13 BOARD AND BLOCK INSULATION

07 22 00 ROOF AND DECK INSULATION

07 52 00 MODIFIED BITUMINOUS MEMBRANE ROOFING

07 60 00 FLASHING AND SHEET METAL

07 92 00 JOINT SEALANTS

DIVISION 08 - OPENINGS

PROJECT TABLE OF CONTENTS Page 1

08 11 16 ALUMINUM DOORS AND FRAMES

08 33 23 OVERHEAD COILING DOORS

08 71 00 DOOR HARDWARE

08 81 00 GLAZING

08 91 00 METAL WALL LOUVERS

DIVISION 09 - FINISHES

09 06 90 COLOR SCHEDULE

09 96 00 HIGH-PERFORMANCE COATINGS

DIVISION 10 - SPECIALTIES

10 14 02 INTERIOR SIGNAGE

10 44 16 FIRE EXTINGUISHERS

DIVISION 11 - EQUIPMENT

11 22 70 RAW WATER IMPOUNDMENT CIRCULATOR

11 24 80 POWDERED ACTIVATED CARBON STORAGE AND FEED SYSTEM

DIVISION 12 - FURNISHINGS

12 69 00 FLOOR MATS

DIVISION 22 - PLUMBING

22 00 00 PLUMBING, GENERAL PURPOSE

22 07 19.00 40 PLUMBING PIPING INSULATION

DIVISION 23 - HEATING, VENTILATING, AND AIR CONDITIONING

23 00 00 AIR SUPPLY, DISTRIBUTION, VENTILATION, AND EXHAUST SYSTEMS

23 03 00.00 20 BASIC MECHANICAL MATERIALS AND METHODS

23 05 48.00 40 VIBRATION AND SEISMIC CONTROLS FOR HVAC PIPING AND

EQUIPMENT

23 05 93 TESTING, ADJUSTING, AND BALANCING FOR HVAC

23 07 00 THERMAL INSULATION FOR MECHANICAL SYSTEMS

23 09 33.00 40 ELECTRIC AND ELECTRONIC CONTROL SYSTEM FOR HVAC

23 23 00 REFRIGERANT PIPING

23 31 13.00 40 METAL DUCTS

23 81 00.00 20 UNITARY AIR CONDITIONING EQUIPMENT

23 82 46.00 40 ELECTRIC UNIT HEATERS

DIVISION 26 - ELECTRICAL

26 20 00 INTERIOR DISTRIBUTION SYSTEM

26 23 00 SWITCHGEAR

26 28 01 COORDINATED POWER SYSTEM PROTECTION

26 29 23 VARIABLE FREQUENCY DRIVE SYSTEMS UNDER 600 VOLTS

26 32 15 EMERGENCY DIESEL-GENERATOR SET STATIONARY WITH AUXILIARIES

26 41 00 LIGHTNING PROTECTION SYSTEM

26 42 14.00 10 CATHODIC PROTECTION SYSTEM (SACRIFICIAL ANODE)

26 51 00 INTERIOR LIGHTING

26 56 00 EXTERIOR LIGHTING

DIVISION 27 - COMMUNICATIONS

PROJECT TABLE OF CONTENTS Page 2

27 10 00 BUILDING TELECOMMUNICATIONS CABLING SYSTEM

DIVISION 28 - ELECTRONIC SAFETY AND SECURITY

28 23 23 CLOSED CIRCUIT TELEVISION SYSTEMS

28 31 74 INTERIOR FIRE DETECTION AND ALARM SYSTEM

DIVISION 31 - EARTHWORK

31 00 00 EARTHWORK

31 05 21 GEOGRID SOIL REINFORCEMENT

31 05 22 GEOTEXTILE FOR ROADWAYS

31 11 00 CLEARING AND GRUBBING

31 32 11 SOIL SURFACE EROSION CONTROL

DIVISION 32 - EXTERIOR IMPROVEMENTS

32 01 16 ASPHALTIC CONCRETE PAVEMENT PARTIAL REMOVAL, REPAIR AND

RESURFACING

32 01 19 FIELD MOLDED SEALANTS FOR SEALING JOINTS IN RIGID

PAVEMENTS

32 13 13.06 PORTLAND CEMENT CONCRETE PAVEMENT FOR ROADS AND SITE

FACILITIES

32 15 00 AGGREGATE SURFACE COURSE

32 31 13.53 HIGH-SECURITY CHAIN LINK FENCES AND GATES

32 92 19 SEEDING

DIVISION 33 - UTILITIES

33 31 00 HIGH DENSITY POLYETHYLENE (HDPE) PIPE

33 81 27 TELEPHONE SYSTEM

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

35 27 40 GEOCOMPOSITE DRAINAGE NETS

35 31 19.20 ARTICULATING CONCRETE BLOCK REVETMENTS

35 73 13 EMBANKMENT FOR EARTH DAMS

35 75 00 HIGH DENSITY POLYETHYLENE (HDPE) LINER

DIVISION 40 - PROCESS INTEGRATION

40 05 12 COPPER PIPE AND TUBING

40 05 13.19 STAINLESS STEEL PIPE AND FITTINGS

40 05 13 PVC PIPE AND FITTINGS

40 05 18 DUCTILE IRON PIPE AND FITTINGS

40 05 19 IN-SITU CEMENT MORTAR LINING REPAIR TO EXISTING STEEL PIPE

40 15 66 STAINLESS STEEL PIPE AND FITTINGS

40 21 07 WELL WATER SYSTEMS

40 95 00 PROCESS CONTROL

40 95 01 PROCESS CONTROL DESCRIPTIONS

DIVISION 43 - PROCESS GAS AND LIQUID HANDLING, PURIFICATION, AND STORAGE

EQUIPMENT

43 21 13 PUMPS: WATER, CENTRIFUGAL, STRAINER, AND HEATED ENCLOSURE

43 21 49 VERTICAL COLUMN TYPE SOLIDS HANDLING PUMPS

43 21 59 VALVES AND APPURTENANCES

APPENDICES

PROJECT TABLE OF CONTENTS Page 3

Appendix A A - Geotechnical Data Report Appendix B B - Existing River Intake PanelMate Screens

-- End of Project Table of Contents --

PROJECT TABLE OF CONTENTS Page 4

SECTION TABLE OF CONTENTS

DIVISION 26 - ELECTRICAL

SECTION 26 20 00

INTERIOR DISTRIBUTION SYSTEM

04/13

PART 1 GENERAL

1.1 REFERENCES

1.2 DEFINITIONS

1.3 SCOPE OF WORK

1.4 SUBMITTALS

1.5 QUALITY ASSURANCE

1.5.1 Regulatory Requirements

1.5.2 Standard Products

1.5.2.1 Alternative Qualifications

1.5.2.2 Material and Equipment Manufacturing Date

1.6 WARRANTY

1.7 ELECTRICAL SERVICE

1.8 ENCLOSURE TYPES

PART 2 PRODUCTS

2.1 MATERIALS AND EQUIPMENT

2.2 CONDUIT AND FITTINGS

2.2.1 Rigid Aluminum Conduit

2.2.2 PVC Coated Rigid Aluminum Conduit

2.2.3 Rigid Nonmetallic Conduit

2.2.4 Liquid-Tight Flexible Metal Conduit, Steel

2.2.5 Fittings for Flexible Metal Conduit

2.2.6 Fittings for Rigid Metal Conduit

2.2.7 Fittings for Rigid Nonmetallic Conduit

2.3 BOXES AND FITTINGS

2.4 WIRES AND CABLES

2.4.1 Conductors

2.4.1.1 Minimum Conductor Sizes

2.4.2 Color Coding

2.4.3 Insulation

2.4.4 Bonding Conductors

2.4.4.1 Telecommunications Bonding Backbone (TBB)

2.4.4.2 Bonding Conductor for Telecommunications

2.4.4.3 Process Instrumentation Wiring

2.5 SPLICES AND TERMINATION COMPONENTS

2.6 DEVICE PLATES

2.7 SWITCHES

2.7.1 Toggle Switches

2.7.2 Disconnect Switches

2.8 FUSES

2.8.1 Fuseholders

2.8.2 Cartridge Fuses, Current Limiting Type (Class R)

2.9 RECEPTACLES

2.9.1 Weatherproof Receptacles

SECTION 26 20 00 Page 1

2.9.2 Ground-Fault Circuit Interrupter Receptacles

2.10 PANELBOARDS

2.10.1 Enclosure

2.10.2 Panelboard Buses

2.10.3 Circuit Breakers

2.10.3.1 Multipole Breakers

2.10.3.2 Circuit Breaker With GFCI

2.10.3.3 Circuit Breakers for HVAC Equipment

2.11 ENCLOSED CIRCUIT BREAKERS

2.12 TRANSFORMERSe

2.13 MOTORS

2.13.1 Premium Efficiency Motors

2.13.2 Motor Sizes

2.13.3 Wiring and Conduit

2.14 MOTOR CONTROLLERS

2.14.1 Control Wiring

2.14.2 Control Circuit Terminal Blocks

2.14.2.1 Types of Terminal Blocks

2.14.3 Pushbutton Stations

2.14.4 Pilot and Indicating Lights

2.15 MOTOR CONTROL CENTERS (PAC SILO CONTROL BUILDING)

2.15.1 Bus Systems

2.15.1.1 Horizontal and Main Buses

2.15.1.2 Vertical Bus

2.15.1.3 Ground Bus

2.15.2 Combination Motor Controllers

2.16 LOCKOUT REQUIREMENTS

2.17 GROUNDING SYSTEM

2.18 UNDERGROUND SYSTEM

2.19 MISCELLANEOUS EQUIPMENT

2.19.1 Polyethylene Warning Tape

2.19.2 Heat Tracing

2.19.3 Equipment Mounting Stands

2.20 HAZARDOUS LOCATIONS

2.21 MANUFACTURER'S NAMEPLATE

2.22 FIELD FABRICATED NAMEPLATES

2.23 WARNING SIGNS

2.24 FIRESTOPPING MATERIALS

2.25 SURGE PROTECTIVE DEVICES

2.26 FACTORY APPLIED FINISH

2.27 TRANSFORMER FACTORY TESTS

2.28 COORDINATED POWER SYSTEM PROTECTION

PART 3 EXECUTION

3.1 INSTALLATION

3.1.1 Underground Service

3.1.2 Hazardous Locations

3.1.3 Service Entrance Identification

3.1.3.1 Labels

3.1.4 Wiring Methods

3.1.4.1 Pull Wire

3.1.5 Conduit Installation

3.1.5.1 Restrictions Applicable to Aluminum Conduit

3.1.5.2 Restrictions Applicable to Nonmetallic Conduit

3.1.5.3 Restrictions Applicable to Flexible Conduit

3.1.5.4 Service Entrance Conduit, Underground

3.1.5.5 Underground Conduit Other Than Service Entrance

3.1.5.6 Conduit Installed Under Floor Slabs

SECTION 26 20 00 Page 2

3.1.5.7 Conduit Through Floor Slabs

3.1.5.8 Stub-Ups

3.1.5.9 Conduit Support

3.1.5.10 Directional Changes in Conduit Runs

3.1.5.11 Locknuts and Bushings

3.1.5.12 Flexible Connections

3.1.6 Mounting Heights

3.1.7 Conductor Identification

3.1.7.1 Marking Strips

3.1.8 Covers and Device Plates

3.1.9 Electrical Penetrations

3.1.10 Grounding and Bonding

3.1.10.1 Ground Rods

3.1.10.2 Grounding Connections

3.1.11 Equipment Connections

3.1.12 Surge Protective Devices

3.2 FIELD FABRICATED NAMEPLATE MOUNTING

3.3 WARNING SIGN MOUNTING

3.4 FIELD QUALITY CONTROL

3.4.1 Devices Subject to Manual Operation

3.4.2 600-Volt Wiring Test

3.4.3 Transformer Tests

3.4.4 Ground-Fault Receptacle Test

3.4.5 Grounding System Test

3.5 MANUFACTURER'S SERVICES

3.6 TRAINING

-- End of Section Table of Contents --

SECTION 26 20 00 Page 3

SECTION 26 20 00

INTERIOR DISTRIBUTION SYSTEM

04/13

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM B1 (2013) Standard Specification for Hard-Drawn Copper Wire

ASTM B8 (2011) Standard Specification for Concentric-Lay-Stranded Copper Conductors, Hard, Medium-Hard, or Soft

ASTM C478 (2015) Standard Specification for Precast Reinforced Concrete Manhole Sections

ASTM D709 (2013) Laminated Thermosetting Materials

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE 100 (2000; Archived) The Authoritative Dictionary of IEEE Standards Terms

IEEE 81 (2012) Guide for Measuring Earth Resistivity, Ground Impedance, and Earth Surface Potentials of a Ground System

IEEE C2 (2012; Errata 2012; INT 1-4 2012; INT 5-7 2013; INT 8 2014) National Electrical Safety Code

INTERNATIONAL ELECTRICAL TESTING ASSOCIATION (NETA)

NETA ATS (2013) Standard for Acceptance Testing Specifications for Electrical Power Equipment and Systems

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

ANSI C80.5 (2005) American National Standard for Electrical Rigid Aluminum Conduit

NEMA 250 (2014) Enclosures for Electrical Equipment (1000 Volts Maximum)

NEMA FU 1 (2012) Low Voltage Cartridge Fuses

NEMA ICS 1 (2000; R 2008; E 2010) Standard for Industrial Control and Systems: General

SECTION 26 20 00 Page 4

Requirements

NEMA ICS 2 (2000; R 2005; Errata 2008) Standard for Controllers, Contactors, and Overload Relays Rated 600 V

NEMA ICS 3 (2005; R 2010) Medium-Voltage Controllers Rated 2001 to 7200 V AC

NEMA ICS 4 (2010) Terminal Blocks

NEMA ICS 6 (1993; R 2011) Enclosures

NEMA KS 1 (2013) Enclosed and Miscellaneous Distribution Equipment Switches (600 V Maximum)

NEMA MG 1 (2014) Motors and Generators

NEMA MG 10 (2013) Energy Management Guide for Selection and Use of Fixed Frequency Medium AC Squirrel-Cage Polyphase Induction Motors

NEMA ST 20 (1992; R 1997) Standard for Dry-Type Transformers for General Applications

NEMA TC 2 (2013) Standard for Electrical Polyvinyl Chloride (PVC) Conduit

NEMA TC 3 (2013) Standard for Polyvinyl Chloride (PVC) Fittings for Use With Rigid PVC Conduit and Tubing

NEMA TP 1 (2002) Guide for Determining Energy Efficiency for Distribution Transformers

NEMA WD 1 (1999; R 2005; R 2010) Standard for General Color Requirements for Wiring Devices

NEMA WD 6 (2012) Wiring Devices Dimensions Specifications

NEMA Z535.4 (2011) American National Standard for Product Safety Signs and Labels

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2014; AMD 1 2013; Errata 1 2013; AMD 2 2013; Errata 2 2013; AMD 3 2014; Errata 3-4 2014; AMD 4-6 2014) National Electrical Code

NFPA 70E (2015) Standard for Electrical Safety in the Workplace

NFPA 780 (2014) Standard for the Installation of Lightning Protection Systems

SECTION 26 20 00 Page 5

TELECOMMUNICATIONS INDUSTRY ASSOCIATION (TIA)

TIA-607 (2011b) Generic Telecommunications Bonding and Grounding (Earthing) for Customer Premises

UNDERWRITERS LABORATORIES (UL)

UL 198M (2003; Reprint Feb 2013) Standard for Mine-Duty Fuses

UL 1063 (2006; Reprint Jul 2012) Machine-Tool Wires and Cables

UL 1203 (2013) UL Standard for Safety Explosion-Proof and Dust-Ignition-Proof Electrical Equipment for Use in Hazardous (Classified) Locations

UL 1449 (2014) Surge Protective Devices

UL 20 (2010; Reprint Feb 2012) General-Use Snap Switches

UL 360 (2013; Reprint Aug 2014) Liquid-Tight Flexible Steel Conduit

UL 4248 (2007) UL Standard for Safety Fuseholders

UL 44 (2014; Reprint Jun 2014) Thermoset-Insulated Wires and Cables

UL 467 (2007) Grounding and Bonding Equipment

UL 489 (2013; Reprint Mar 2014) Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures

UL 498 (2012; Reprint Oct 2014) Attachment Plugs and Receptacles

UL 50 (2007; Reprint Apr 2012) Enclosures for Electrical Equipment, Non-environmental Considerations

UL 508 (1999; Reprint Oct 2013) Industrial Control Equipment

UL 514B (2012; Reprint Nov 2014) Conduit, Tubing and Cable Fittings

UL 651 (2011; Reprint May 2014) Standard for Schedule 40 and 80 Rigid PVC Conduit and Fittings

UL 67 (2009; Reprint Nov 2014) Standard for Panelboards

SECTION 26 20 00 Page 6

UL 674 (2011; Reprint Jul 2013) Electric Motors and Generators for Use in Division 1 Hazardous (Classified) Locations

UL 6A (2008; Reprint Nov 2014) Electrical Rigid Metal Conduit - Aluminum, Red Brass, and Stainless Steel

UL 845 (2005; Reprint Jul 2011) Motor Control Centers

UL 869A (2006) Reference Standard for Service Equipment

UL 943 (2006; Reprint Jun 2012) Ground-Fault Circuit-Interrupters

UL 984 (1996; Reprint Sep 2005) Hermetic Refrigerant Motor-Compressors

U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)

29 CFR 1910.147 Control of Hazardous Energy (Lock Out/Tag Out)

1.2 DEFINITIONS

Unless otherwise specified or indicated, electrical and electronics terms used in these specifications, and on the drawings, shall be as defined in

IEEE 100.

1.3 SCOPE OF WORK

Provide the labor, materials, equipment, incidentals, and testing required to make the electrical and process instrumentation systems at the Raw Water Impoundment and Pump Station operational, as shown on the Drawings and as specified herein.

The work shall include the following:

a. Electrical service from the power company.

b. Conduit, wire, and field connections for motors, motor controllers, control devices, control panels and electrical equipment furnished under other Divisions of these specifications.

c. Conduit, wiring and terminations for all field mounted instruments furnished under other Divisions of these specifications, including process instrumentation primary elements, transmitters, local indicators and control panels. Lightning and surge protection equipment wiring at process instrumentation transmitters. Install vendor furnished cables specified under other Divisions of these specifications.

d. A complete raceway system for the Data Highway Cables and specialty cable systems. Install the Data Highway Cables and other specialty cable systems furnished under other Divisions in accordance with the system manufacturers' installation instructions. Review the raceway layout, prior to installation, with the computer system supplier and

SECTION 26 20 00 Page 7 the cable manufacturer to ensure raceway compatibility with the systems and materials being furnished. Where redundant cables are furnished, install cables in separate raceways.

e. Conduit, wiring and terminations for variable frequency drives, harmonic filters, transformers and power factor correction capacitors furnished under other Divisions of these specifications.

f. Power wiring for all heating, ventilating, and air conditioning (HVAC) equipment furnished under other Divisions of these Specifications, including power wiring for 120V unit heater motors, thermostats, fan motors, dampers, ATC panels, and other HVAC inline unit wiring shown on the Drawings.

g. Provide precast manholes, precast handholes and light pole bases.

h. Provide manhole and handhole frames and covers.

i. The electrical system shall be suitable in every way for the service required. Materials and work which may be reasonably implied as being incidental to the work of this Section shall be provided at no extra cost.

j. Telephone service from the Telephone Company.

k. Grounding System.

l. Underground System.

m. Closed Circuit Television Systems.

n. Field verify all existing underground electrical and mechanical piping.

The work shall include complete testing of all equipment and wiring at the completion of work and making any minor correction changes or adjustments necessary for the proper functioning of the system and equipment. All workmanship shall be of the highest quality; substandard work will be rejected.

A single manufacturer shall provide switchgear, motor control centers, transformers, disconnect switches, panel boards, etc. This manufacturer shall also provide a short circuit/protective device coordination study as specified herein.

Provide temporary power for miscellaneous power (drills, pumps, etc.). No facility circuits shall be used unless approved in writing by the Government. Temporary power shall be removed at job completion.

Complete coordination with other contractors. Contractor shall coordinate with all other contractors equipment submittals and obtain all relevant submittals.

Mount transmitters, process instruments, operators stations, etc. furnished under other Divisions of these specifications.

Excavation, bedding material, forms, concrete and backfill for underground raceways; forms and concrete for electrical equipment furnished herein is included in Division 26. All work shall be done in accordance other relevant Divisions.

SECTION 26 20 00 Page 8

1.4 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Panelboards; G, RO Transformers; G, RO Motor Control Centers; G, RO Marking Strips drawings; G, RO

SD-03 Product Data

Receptacles Circuit Breakers Switches Transformers Enclosed Circuit Breakers Motor Controllers Combination Motor Controllers Surge Protective Devices

SD-05 Design Data

Training Plan

SD-06 Test Reports

600-volt Wiring Test; G, RO Grounding System Test; G, RO Transformer Tests; G, RO Ground-Fault Receptacle Test; G, RO Testing And Start-Up

SD-07 Certificates

Fuses

SD-09 Manufacturer's Field Reports

Transformer Factory Tests

SD-10 Operation and Maintenance Data

Operations And Maintenance Manuals

1.5 QUALITY ASSURANCE

1.5.1 Regulatory Requirements

In each of the publications referred to herein, consider the advisory provisions to be mandatory, as though the word, "shall" had been substituted for "should" wherever it appears. Interpret references in these publications to the "authority having jurisdiction," or words of

SECTION 26 20 00 Page 9 similar meaning, to mean the Contracting Officer. Equipment, materials, installation, and workmanship shall be in accordance with the mandatory and advisory provisions of NFPA 70 unless more stringent requirements are specified or indicated.

1.5.2 Standard Products

Materials and equipment shall be the product of an established manufacturer who produces equipment and material of the desired design and workmanship.

Products shall have been in satisfactory commercial or industrial use for 2 years prior to bid opening. The 2-year period shall include applications of equipment and materials under similar circumstances and of similar size. The product shall have been on sale on the commercial market through advertisements, manufacturers' catalogs, or brochures during the 2-year period. Where two or more items of the same class of equipment are required, these items shall be products of a single manufacturer; however, the component parts of the item need not be the products of the same manufacturer unless stated in this section.

1.5.2.1 Alternative Qualifications

Products having less than a 2-year field service record will be acceptable if a certified record of satisfactory field operation for not less than 6000 hours, exclusive of the manufacturers' factory or laboratory tests, is furnished.

1.5.2.2 Material and Equipment Manufacturing Date

Products manufactured more than 3 years prior to date of delivery to site shall not be used, unless specified otherwise.

1.6 WARRANTY

The equipment items shall be supported by service organizations which are reasonably convenient to the equipment installation in order to render satisfactory service to the equipment on a regular and emergency basis during the warranty period of the contract.

1.7 ELECTRICAL SERVICE

The power company serving this project is Georgia Power Company. Service will be obtained at 480 Volts, 3 Phase, 4 Wire, 60 Hz to the service entrance equipment as shown on the drawings. Fees and charges required to obtain temporary and permanent service will be paid directly by the U.S.

Army Corps of Engineers (USACE). Coordinate with Georgia Power Company and provide these services.

The Georgia Power Company will:

a. Provide underground primary conduits and cables.

b. Provide the transformer pre-cast concrete pad.

c. Provide transformer.

d. Terminate underground primary cables at the transformer.

e. Terminatef underground secondary cables at the transformer.

SECTION 26 20 00 Page 10

f. Provide a metering enclosure mounted on the side of the transformer.

g. Furnish metering current transformers (C.T.'s), meter and meter wiring.

h. Provide an empty conduit with pull line from the metering C.T.

enclosure to the meter enclosure.

TMake arrangements with the power company for obtaining electrical service, provide the labor and materials required for electrical services not provided by USACE, and provide secondary conduits and cables.

1.8 ENCLOSURE TYPES

Unless otherwise specified, electrical enclosures shall have the following ratings:

a. NEMA 1 for Pump Station Building Electrical Room.

b. NEMA 4X for Pump Station Building Pump Room, outdoor locations, rooms below grade, and the PAC Silo Control Building (with exception to the motor control center).

PART 2 PRODUCTS

2.1 MATERIALS AND EQUIPMENT

Materials, equipment, and devices shall, as a minimum, meet requirements of UL, where UL standards are established for those items, and requirements of

NFPA 70.

2.2 CONDUIT AND FITTINGS

Shall conform to the following:

2.2.1 Rigid Aluminum Conduit

ANSI C80.5, UL 6A.

2.2.2 PVC Coated Rigid Aluminum Conduit

ANSI C80.5, UL 6A.

PVC coated rigid steel conduit shall have a minimum 0.040-in thick, polyvinyl chloride coating permanently bonded to aluminum conduit and an internal chemically cured urethane or enamel coating. The ends of all couplings, fittings, etc, shall have a minimum of one pipe diameter in length of PVC overlap.

2.2.3 Rigid Nonmetallic Conduit

PVC Type EPC-80 in accordance with NEMA TC 2, UL 651.

2.2.4 Liquid-Tight Flexible Metal Conduit, Steel

UL 360.

2.2.5 Fittings for Flexible Metal Conduit

UL 514B. Ferrous fittings shall be cadmium- or zinc-coated in accordance

SECTION 26 20 00 Page 11 with UL 514B.

2.2.6 Fittings for Rigid Metal Conduit

Threaded-type. Split couplings unacceptable.

2.2.7 Fittings for Rigid Nonmetallic Conduit

NEMA TC 3 for PVC, and UL 514B.

2.3 BOXES AND FITTINGS

For use in NEMA 1 areas, terminal boxes, junction boxes, pull boxes etc, shall be galvanized sheet steel with continuously welded seams. Box bodies shall be flanged and shall not have holes or knockouts. Box bodies shall not be less than 14 gauge metal and covers shall not be less than 12 gauge metal. Covers shall be gasketed and fastened with stainless steel screws.

Terminal boxes shall be provided with hinged doors, terminal mounting straps and brackets. Terminal blocks shall be NEMA type, not less than 20 Amps, 600 Volt.

NEMA 4X terminal boxes, junction boxes and pull boxes shall be stainless steel with stainless steel hardware and covers having a continuous gasket on all four sides. Terminal boxes shall be provided with hinged doors, terminal mounting straps and brackets. Terminal blocks shall be NEMA type, not less than 20 Amps, 600 Volt.

Boxes and fittings used with PVC coated conduit shall be provided with a PVC coating bonded to the metal, the same thickness as used on the coated steel conduit. The ends of couplings and fittings shall have a minimum of one pipe diameter PVC overlap to cover threads and provide a seal.

Cast or malleable iron device boxes shall be Type FD. All cast or malleable iron boxes and fittings shall have cadmium-zinc finish with cast covers and stainless steel screws.

Cast aluminum device boxes shall be Type FD. All cast aluminum boxes and fittings shall be copper-free aluminum with cast aluminum covers and stainless steel screws.

Conduit hubs shall be threaded, grounding type, stainless steel, and UL 514B listed.

Conduit wall and floor seals for sleeved openings shall seal the entrance of water and moisture between outdoor and indoor environments, be constructed of malleable iron body with malleable iron locknuts, UL E-11857 Listed, and equal or exceed the fire rating of the wall or floor constructed.

Conduit sealing bushings shall seal the entrance of water and moisture between outdoor and indoor environments, be constructed of malleable iron body with malleable iron locknuts, utilize slotted pressure discs with drilled holes to accommodate cables, UL E-11857 Listed, and equal or exceed the fire rating of the wall or floor constructed.

Combination expansion-deflection fittings embedded in concrete and exposed shall be malleable iron, allow 2 inches of movement in either direction (total of 4 inches of movement), bonding jumper with tinned copper braids, and UL E-11853 listed.

SECTION 26 20 00 Page 12

2.4 WIRES AND CABLES

Wires and cables shall meet applicable requirements of NFPA 70 and UL for type of insulation, jacket, and conductor specified or indicated. Wires and cables manufactured more than 12 months prior to date of delivery to site shall not be used.

2.4.1 Conductors

Conductors No. 8 AWG and larger diameter shall be stranded. Conductors No.

10 AWG and smaller diameter shall be solid, except that conductors for remote control, alarm, and signal circuits, classes 1, 2, and 3, shall be stranded unless specifically indicated otherwise. Conductor sizes and capacities shown are based on copper, unless indicated otherwise. All conductors shall be copper.

2.4.1.1 Minimum Conductor Sizes

Minimum size for branch circuits shall be No. 12 AWG; control circuits, No.

14 AWG.

Wire for process instrumentation signals (i.e., 1-5 VDC, 4-20 mA), R.T.D., potentiometer and similar signals shall be:

a. Single pair cable:

1. Conductors: 2- No.16 stranded and twisted on 2-in lay

2. Insulation: PVC with 300 Volt, 105 degrees C rating

3. Shield: 100 percent mylar tape with drain wire

4. Jacket: PVC with UL Subject 13, UL 1581, and manufacturer's identification

5. Max overall diameter: 0.262-in

6. Miscellaneous UL listed for underground wet location use

b. Three conductor (triad) cable:

1. Conductors: 3- No.16 stranded and twisted on 2-in lay

2. Insulation: PVC with 300 Volt, 105 degrees C rating

3. Shield: 100 percent mylar tape with drain wire

4. Jacket: PVC with UL Subject 13, UL 1581 and manufacturer's identification

5. Max overall diameter: 0.276-in

6. Miscellaneous: UL listed for underground wet location use

2.4.2 Color Coding

Provide for service, feeder, branch, control, and signaling circuit conductors. Color shall be green for grounding conductors and white for

SECTION 26 20 00 Page 13 neutrals; except where neutrals of more than one system are installed in same raceway or box, other neutrals shall be white with a different colored (not green) stripe for each. Color of ungrounded conductors in different voltage systems shall be as follows:

a. 208/120 volt, three-phase

1. Phase A - black

2. Phase B - red

3. Phase C - blue

b. 480/277 volt, three-phase

1. Phase A - brown

2. Phase B - orange

3. Phase C - yellow

c. 120/240 volt, single phase: Black and red

d. On three-phase, four-wire delta system, high leg shall be orange, as required by NFPA 70.

2.4.3 Insulation

Unless specified or indicated otherwise or required by NFPA 70, power and lighting wires shall be 600-volt Type XHHW conforming to UL 44. Where lighting fixtures require 90-degree Centigrade (C) conductors, provide only conductors with 90-degree C insulation or better

2.4.4 Bonding Conductors

ASTM B1, solid bare copper wire for sizes No. 8 AWG and smaller diameter;

ASTM B8, Class B, stranded bare copper wire for sizes No. 6 AWG and larger diameter.

2.4.4.1 Telecommunications Bonding Backbone (TBB)

Provide a copper conductor TBB in accordance with TIA-607. The TBB shall be a minimum No. 6 AWG and be sized at 2 kcmil per linear foot of conductor length up to a maximum size of 3/0 AWG. Provide insulated TBB with insulation as specified in the paragraph INSULATION and meeting the fire ratings of its pathway.

2.4.4.2 Bonding Conductor for Telecommunications

Provide a copper conductor Bonding Conductor for Telecommunications between the telecommunications main grounding busbar (TMGB) and the electrical service ground in accordance with TIA-607. The bonding conductor for telecommunications shall be sized the same as the TBB.

2.4.4.3 Process Instrumentation Wiring

Wire for process instrumentation signals (i.e., 1-5 VDC, 4-20 mA), R.T.D., potentiometer and similar signals shall be:

SECTION 26 20 00 Page 14

a. Single pair cable:

1. Conductors: 2- No.16 stranded and twisted on 2-in lay

2. Insulation: PVC with 300 Volt, 105 degrees C rating

3. Shield: 100 percent mylar tape with drain wire

4. Jacket: PVC with UL Subject 13, UL 1581, and manufacturer's identification

5. Max overall diameter: 0.262-in

6. Miscellaneous UL listed for underground wet location use

b. Three conductor (triad) cable:

1. Conductors: 3- No.16 stranded and twisted on 2-in lay

2. Insulation: PVC with 300 Volt, 105 degrees C rating

3. Shield: 100 percent mylar tape with drain wire

4. Jacket: PVC with UL Subject 13, UL 1581 and manufacturer's identification

5. Max overall diameter: 0.276-in

6. Miscellaneous: UL listed for underground wet location use

2.5 SPLICES AND TERMINATION COMPONENTS

Except where permitted by the Government, no splices will be allowed.

Power conductors: Terminations shall be die type or set screw type pressure connectors as specified. Splices (where allowed) shall be die type compression connector and waterproof with heat shrink boot or epoxy filling.

Control Conductors: Termination on saddle-type terminals shall be wired directly with a maximum of two conductors. Termination on screw type terminals shall be made with a maximum of two spade connectors. Splices (where allowed) shall be made with insulated compression type connectors.

Instrumentation Signal Conductors (including graphic panel, alarm, low and high level signals): terminations same as for control conductors.

Splices shall not be made in push button control stations, control devices (i.e., pressure switches, flow switches, etc), conduit bodies, etc.

2.6 DEVICE PLATES

Plates for indoor flush mounted devices shall be of the required number of gangs for the application involved. Where permitted in other areas of the plant, flush mounted devices in cement block construction shall be Type 302 high nickel (18-8) stainless steel of the same manufacturer as the devices.

Plates for indoor surface mounted device boxes shall be cast metal of the same material as the box.

SECTION 26 20 00 Page 15

Oversized plates shall be installed where standard plates do not fully cover the wall opening.

Device plates for switches mounted outdoors or indicated as weatherproof shall be gasketed, cast aluminum with provisions for padlocking switches "On" and "Off".

Multiple surface mounted devices shall be ganged in a single, common box and provided with an adapter, if necessary, to allow mounting of single gang device plates on multigang cast boxes.

Engraved device plates shall be provided where required.

Weatherproof, gasketed cover for GFI receptacle mounted in a FD box.

2.7 SWITCHES

2.7.1 Toggle Switches

NEMA WD 1, UL 20, single pole, double pole, three-way, and four-way, totally enclosed with bodies of thermoplastic or thermoset plastic and mounting strap with grounding screw. Handles shall be white thermoplastic. Wiring terminals shall be screw-type, side-wired or of the solderless pressure type having suitable conductor-release arrangement.

Contacts shall be silver-cadmium and contact arm shall be one-piece copper alloy. Switches shall be rated quiet-type ac only, 120/277 volts, with current rating and number of poles indicated.

2.7.2 Disconnect Switches

NEMA KS 1. Provide heavy duty-type switches where indicated, where switches are rated higher than 240 volts, and for double-throw switches.

Fused switches shall utilize Class R fuseholders and fuses, unless indicated otherwise. Switches serving as motor-disconnect means shall be horsepower rated. Provide switches in NEMA 4X stainless steel enclosurse per NEMA ICS 6.

2.8 FUSES

NEMA FU 1. Provide complete set of fuses for each fusible switch panel and control center. Time-current characteristics curves of fuses serving motors or connected in series with circuit breakers or other circuit protective devices shall be coordinated for proper operation. Submit coordination data for approval. Fuses shall have voltage rating not less than circuit voltage.

2.8.1 Fuseholders

Provide in accordance with UL 4248.

2.8.2 Cartridge Fuses, Current Limiting Type (Class R)

UL 198M, Class RK-1 RK-5 time-delay type. Associated fuseholders shall be Class R only.

2.9 RECEPTACLES

UL 498, hard use, heavy-duty grounding-type. Ratings and configurations

SECTION 26 20 00 Page 16 shall be as indicated. Bodies shall be of white per NEMA WD 1. Face and body shall be thermoplastic supported on a metal mounting strap.

Dimensional requirements shall be per NEMA WD 6. Provide screw-type, side-wired wiring terminals or of the solderless pressure type having suitable conductor-release arrangement. Connect grounding pole to mounting strap. The receptacle shall contain triple-wipe power contacts and double or triple-wipe ground contacts.

2.9.1 Weatherproof Receptacles

Provide in cast metal box with gasketed, weatherproof, cast-metal cover plate and gasketed cap over each receptacle opening. Provide caps with a spring-hinged flap. Receptacle shall be UL listed for use in "wet locations with plug in use."

2.9.2 Ground-Fault Circuit Interrupter Receptacles

UL 943, duplex type for mounting in standard outlet box. Device shall be capable of detecting current leak of 6 milliamperes or greater and tripping per requirements of UL 943 for Class A GFCI devices. Provide screw-type, side-wired wiring terminals or pre-wired (pigtail) leads.

2.10 PANELBOARDS

UL 67 and UL 50 having a short-circuit current rating as indicated.

Panelboards for use as service disconnecting means shall additionally conform to UL 869A. Panelboards shall be circuit breaker-equipped unless indicated otherwise. Design shall be such that individual breakers can be removed without disturbing adjacent units or without loosening or removing supplemental insulation supplied as means of obtaining clearances as required by UL. "Specific breaker placement" is required in panelboards to match the breaker placement indicated in the panelboard schedule on the drawings. Use of "Subfeed Breakers" is not acceptable unless specifically indicated otherwise. Main breaker shall be "separately" mounted "above" or "below" branch breakers. Where "space only" is indicated, make provisions for future installation of breakers. Directories shall indicate load served by each circuit in panelboard. Directories shall also indicate source of service to panelboard (e.g., Panel PP-1 served from Switchgear).

Type directories and mount in holder behind transparent protective covering. Panelboard shall have nameplates in accordance with Paragraph

FIELD FABRICATED NAMEPLATES.

2.10.1 Enclosure

Enclosures shall meet the requirements of UL 50. All cabinets shall be fabricated from sheet steel of not less than No. 10 gauge if flush-mounted or mounted outdoors, and not less than No. 12 gauge if surface-mounted indoors, with full seam-welded box ends. Cabinets mounted outdoors or flush-mounted shall be hot-dipped galvanized after fabrication. Cabinets shall be painted in accordance with paragraph PAINTING. Front edges of cabinets shall be form-flanged or fitted with structural shapes welded or riveted to the sheet steel, for supporting the panelboard front. All cabinets shall be so fabricated that no part of any surface on the finished cabinet shall deviate from a true plane by more than 1/8 inch. Holes shall be provided in the back of indoor surface-mounted cabinets, with outside spacers and inside stiffeners, for mounting the cabinets with a 1/2 inch clear space between the back of the cabinet and the wall surface. Flush doors shall be mounted on hinges that expose only the hinge roll to view when the door is closed. Each door shall be fitted with a combined catch

SECTION 26 20 00 Page 17 and lock, except that doors over 24 inches long shall be provided with a three-point latch having a knob with a T-handle, and a cylinder lock. Two keys shall be provided with each lock, and all locks shall be keyed alike.

Finished-head cap screws shall be provided for mounting the panelboard fronts on the cabinets.

2.10.2 Panelboard Buses

Support bus bars on bases independent of circuit breakers. Main buses and back pans shall be designed so that breakers may be changed without machining, drilling, or tapping. Provide isolated neutral bus in each panel for connection of circuit neutral conductors. Provide separate ground bus identified as equipment grounding bus per UL 67 for connecting grounding conductors; bond to steel cabinet.

2.10.3 Circuit Breakers

UL 489, molded case, bolt in type, having a minimum short-circuit current rating equal to the short-circuit current rating of the panelboard in which the circuit breaker shall be mounted. Breaker terminals shall be UL listed as suitable for type of conductor provided. Series rated circuit breakers and plug-in circuit breakers are unacceptable.

2.10.3.1 Multipole Breakers

Provide common trip-type with single operating handle. Breaker design shall be such that overload in one pole automatically causes all poles to open. Maintain phase sequence throughout each panel so that any three adjacent breaker poles are connected to Phases A, B, and C, respectively.

2.10.3.2 Circuit Breaker With GFCI

UL 943 and NFPA 70. Provide with "push-to-test" button, visible indication of tripped condition, and ability to detect and trip on current imbalance of 6 milliamperes or greater per UL 943 for Class A GFCI devices, for personnel protection.

2.10.3.3 Circuit Breakers for HVAC Equipment

Circuit breakers for HVAC equipment having motors (group or individual) shall be marked for use with HACR type and UL listed as HACR type.

2.11 ENCLOSED CIRCUIT BREAKERS

UL 489. Individual molded case circuit breakers with voltage and continuous current ratings, number of poles, overload trip setting, and short circuit current interrupting rating as indicated. Enclosure type as indicated in Paragraph TRANSFORMERS.

2.12 TRANSFORMERSe

NEMA ST 20, general purpose, dry-type, self-cooled, ventilated. Provide transformers in NEMA 2 enclosure. Transformer shall have 220 degrees C insulation system for transformers 15 kVA and greater, and shall have 180 degrees C insulation for transformers rated 10 kVA and less, with temperature rise not exceeding 80 degrees C under full-rated load in maximum ambient of 40 degrees C. Transformer of 80 degrees C temperature rise shall be capable of carrying continuously 130 percent of nameplate kVA without exceeding insulation rating.

SECTION 26 20 00 Page 18

Transformers, indicated and specified with: 480V primary, 80 degrees C or 115 degrees C temperature rise, kVA ratings of 37.5 to 100 for single phase or 30 to 500 for three phase, shall be energy efficient type. Minimum efficiency, based on factory test results, shall not be less than NEMA Class 1 efficiency as defined by NEMA TP 1.

2.13 MOTORS

NEMA MG 1; hermetic-type sealed motor compressors shall also comply with UL 984. Provide the size in terms of HP, kVA, full-load current, or a combination of these characteristics, and other characteristics, of each motor as required. Determine specific motor characteristics to ensure provision of correctly sized starters and overload heaters. Motors for operation on 208-volt, 3-phase circuits shall have terminal voltage rating of 200 volts, and those for operation on 480-volt, 3-phase circuits shall have terminal voltage rating of 460 volts. Motors shall be designed to operate at full capacity with voltage variation of plus or minus 10 percent of motor voltage rating. Unless otherwise indicated, motors rated 1 HP and above shall be continuous duty type.

Motors used with variable frequency drives shall be rated for inverter duty and shall be in accordance with NEMA MG 1, Part 31.

2.13.1 Premium Efficiency Motors

Polyphase motors shall be selected based on high efficiency characteristics relative to typical characteristics and applications as listed in NEMA MG 10.

In addition, continuous rated, polyphase squirrel-cage medium induction motors shall meet the requirements for premium efficiency electric motors in accordance with NEMA MG 1, including the NEMA full load efficiency ratings. In exception, for motor-driven equipment with a minimum seasonal or overall efficiency rating, such as a SEER rating, provide equipment with motor to meet the overall system rating indicated.

Unless otherwise noted, motors 1/2 through 100 horsepower shall be rated 230/460 volt, 3 phase, 60 Hertz A.C.; motors 125 horsepower and above shall be rated 460 volt, 3-phase, 60 Hertz.

Motors shall be totally enclosed, fan-cooled (TEFC) type and designed for severe-duty.

Motors shall have a Class F non-hygroscopic insulation system but shall be limited to Class B Temperature Rise, at 1.15 service factor.

The motor manufacturer's nameplates shall be engraved or embossed on stainless steel and fastened to the motor frame with stainless steel screws or drive pins. Nameplates shall indicate clearly all of the items of information enumerated in NEMA Standard MGI 10.38 or MGI 20.60, as applicable.

2.13.2 Motor Sizes

Provide size for duty to be performed, not exceeding the full-load nameplate current rating when driven equipment is operated at specified capacity under most severe conditions likely to be encountered. When motor size provided differs from size indicated or specified, make adjustments to wiring, disconnect devices, and branch circuit protection to accommodate equipment actually provided.

SECTION 26 20 00 Page 19

2.13.3 Wiring and Conduit

Provide internal wiring for components of packaged equipment as an integral part of the equipment. Provide power wiring and conduit for field-installed equipment, and motor control equipment forming part of motor control centers or switchgear assemblies, the conduit and wiring connecting such centers, assemblies, or other power sources to equipment as specified herein. Power wiring and conduit shall conform to the requirements specified herein. Control wiring shall be provided under, and conform to the requirements of the section specifying the associated equipment.

2.14 MOTOR CONTROLLERS

Motor starters shall be a combination motor circuit protector and contactor, 2 or 3 Pole, single or 3 phase as required, 60 Hz, 600 Volt, magnetically operated, full voltage non-reversing unless otherwise shown on the Drawings. NEMA sizes shall be as required for the horse-powers shown on the Drawings. Motor circuit protectors shall be molded case with adjustable magnetic trip only. They shall be specifically designed for use with magnetic motor starters. Motor circuit protectors shall be current limiting type, with additional current limiters if required. Combination motor starters shall be fully rated for 22,000 amps RMS symmetrical.

Each motor starter shall have a 120 Volt operating coil and control power transformer. Three phase starters shall have three overload relays. One normally open and one normally closed auxiliary contact shall be provided as spares in addition to contacts shown on the Drawings.

Overload relays shall be adjustable, ambient compensated and manually reset.

Provide built-in control stations and indicating lights where shown on the Drawings.

NEMA 4X enclosures shall be stainless steel.

2.14.1 Control Wiring

All control wire shall be stranded tinned copper switchboard wire with 600-volt flame-retardant insulation Type SIS meeting UL 44, or Type MTW meeting UL 1063, and shall pass the VW-1 flame tests included in those standards. Hinge wire shall have Class K stranding. Current transformer secondary leads shall be not smaller than No. 10 AWG. The minimum size of control wire shall be No. 14 AWG. Power wiring for 480-volt circuits and below shall be of the same type as control wiring and the minimum size shall be No. 12 AWG. Special attention shall be given to wiring and terminal arrangement on the terminal blocks to permit the individual conductors of each external cable to be terminated on adjacent terminal points.

2.14.2 Control Circuit Terminal Blocks

NEMA ICS 4. Control circuit terminal blocks for control wiring shall be molded or fabricated type with barriers, rated not less than 600 volts.

The terminals shall be removable binding, fillister or washer head screw type, or of the stud type with contact and locking nuts. The terminals shall be not less than No. 10 in size and shall have sufficient length and space for connecting at least two indented terminals for 10 AWG conductors

SECTION 26 20 00 Page 20 to each terminal. The terminal arrangement shall be subject to the approval of the Contracting Officer and not less than four (4) spare terminals or 10 percent, whichever is greater, shall be provided on each block or group of blocks. Modular, pull apart, terminal blocks will be acceptable provided they are of the channel or rail-mounted type. The Contractor shall submit data showing that the proposed alternate will accommodate the specified number of wires, are of adequate current-carrying capacity, and are constructed to ensure positive contact between current-carrying parts.

2.14.2.1 Types of Terminal Blocks

a. Short-Circuiting Type: Provide short-circuiting type terminal blocks for the current transformer secondary leads and shall have provision for shorting together all leads from each current transformer without first opening any circuit. Terminal blocks shall meet the requirements of paragraph CONTROL CIRCUIT TERMINAL BLOCKS above.

b. Load Type: Load terminal blocks rated not less than 600 volts and of adequate capacity shall be provided for the conductors for NEMA Size 3 and smaller motor controllers and for other power circuits, except those for feeder tap units. The terminals shall be of either the stud type with contact nuts and locking nuts or of the removable screw type, having length and space for at least two indented terminals of the size required on the conductors to be terminated. For conductors rated more than 50 amperes, screws shall have hexagonal heads. Conducting parts between connected terminals shall have adequate contact surface and cross-section to operate without overheating. Each connected terminal shall have the circuit designation or wire number placed on or near the terminal in permanent contrasting color.

2.14.3 Pushbutton Stations

Provide with "start/stop" contacts having one normally open and one normally closed set of contacts, and red lights to indicate when motor is running. Stations shall be heavy duty, oil-tight design.

2.14.4 Pilot and Indicating Lights

Provide LED push-to-test type cluster lamps.

2.15 MOTOR CONTROL CENTERS (PAC SILO CONTROL BUILDING)

UL 845, NEMA ICS 2, NEMA ICS 3. Wiring shall be Class II, Type B, in NEMA Type 1 enclosure. Provide control centers suitable for operation on 480-volt, 3-phase, 3-wire, 60Hz system and shall have minimum short-circuit withstand and interrupting rating as shown on the drawings. Incoming power feeder shall be cable entering at the bottom of enclosure and terminating on main protective device. Main protective device shall be molded case circuit breaker rated as shown on the Drawings. Interconnecting wires shall be copper. Terminal blocks shall be plug-in-type so that controllers may be removed without disconnecting individual control wiring.

Submit shop drawings, including diagrams and installation details of equipment indicating proposed location, layout and arrangement, control panels, accessories, piping, ductwork, and other items that must be shown to ensure a coordinated installation. Wiring diagrams shall identify circuit terminals and indicate the internal wiring for each item of equipment and the interconnection between each item of equipment. Drawings

SECTION 26 20 00 Page 21 shall indicate adequate clearance for operation, maintenance, and replacement of operating equipment devices.

2.15.1 Bus Systems

Provide the following bus systems. Power bus shall be braced to withstand fault current as indicated on the drawings. Wiring troughs shall be isolated from horizontal and vertical bus bars.

2.15.1.1 Horizontal and Main Buses

Horizontal bus shall have continuous current rating as indicated on the drawings. Main bus shall be copper, silver-plated enclosed in isolated compartment at top of each vertical section. Main bus shall be isolated from wire troughs, starters, and other areas.

2.15.1.2 Vertical Bus

Vertical bus shall be copper, silver-plated. Vertical bus shall be enclosed in flame-retardant, polyester glass "sandwich."

2.15.1.3 Ground Bus

Copper ground bus shall be…