Electrical Specifications.pdf

Specifications Project No.

Redpoint Ridge Park Landscape Renovation 24T0031

Electrical Specifications 26-0500

SECTION 26 0500

COMMON WORK RESULTS FOR ELECTRICAL

PART 1 GENERAL

1.01 PROJECT SCOPE

A. Requirements for the electrical features being furnished and installed under these Specifications shall be in accordance with the requirements of this Section.

B. These Specifications, including the Drawings, outline the general requirements for the electrical design and are based on proposed equipment ratings, locations, and conditions to provide for estimated equipment loads and proposed power and lighting circuit ratings.

C. The CONTRACTOR shall coordinate all electrical installations and designs, and shall place the electrical equipment accurately in position; level and plumb, connect, and adjust the electrical equipment; and make the electrical installations ready for service.

D. After the CONTRACTOR has selected the equipment and completed the equipment location, outline and layout drawings, the electrical equipment ratings and power circuits shall be checked, coordinated, and revised as needed.

E. The CONTRACTOR shall furnish and install all materials and equipment and provide all labor required and necessary to complete the work shown on drawings and/or listed below and all other work and miscellaneous items, not specifically mentioned, but inferred for a complete installation, including all accessories and appurtenances required for testing the system. It is the intent of drawings and Specifications that all systems be complete and ready for operation.

F. The CONTRACTOR shall perform electrical systems demolition, cutting and patching for electrical construction, and provide touchup painting.

G. The CONTRACTOR shall contact UNCC 1-800-922-1987 two full working days prior to any digging to request utility system locates. Any system, wire, cable, or piping damaged during the construction process shall be repaired or replaced to the Owner’s satisfaction without additional cost to the Owner.

H. The CONTRACTOR shall contact the District’s Project Manager to request owner system locates (irrigation systems and/or other buried owner systems). Any system, wire, cable, or piping damaged during the construction process shall be repaired or replaced to the Owner’s satisfaction without additional cost to the Owner.

I. The CONTRACTOR shall notify the Engineer and District’s Project Manager a minimum of 48 hours prior to any inspection as well as prior to covering up any work.

Electrical Specifications 26-0500

1.02 RELATED SECTIONS

A. Related Documents: Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 through Division 35 Specification Sections, apply to this Section.

1.03 REFERENCES

A. The latest edition of the following standards and codes, standard publications of professional organizations, and the State of Colorado are the minimum requirements for this work.

1. American National Standards Institute (ANSI)

2. American Society for Testing and Materials (ASTM)

3. Association of Edison Illuminating Companies (AEIC)

4. Code of Federal Regulations (CFR)

5. Insulated Cable Engineer's Association (ICEA)

6. Institute of Electrical and Electronic Engineers (IEEE)

7. National Electrical Manufacturer's Association (NEMA)

8. National Fire Protection Association (NFPA)

9. NFPA 70, The National Electrical Code (NEC-latest edition)

10. International Energy Conservation Code (IECC)

11. Underwriters' Laboratories, Inc. (UL)

12. State, City, and Local Authorities

1.04 CONTRACTOR SUBMITTALS

A. General

1. All submittals shall be in accordance with the requirements of this Section and Section 01 33 00 – Submittal Procedures.

2. All drawings and technical data are required to be furnished by the CONTRACTOR shall be written in English, and all units of measurements shall be in the English system. All drawings shall be made expressly for this Contract. Typical drawings are not acceptable. The drawings and data shall be complete and accurate in their content. Originals and all copies shall be legible. Drawings shall be prepared using AutoCAD format and shall be drawn to scale and shall have neat lettering.

Freehand sketches will not be accepted.

3. Shop Drawings shall include bills of material, front views, assembly drawings, mounting details, schematic diagrams, elementary diagrams, block diagrams, and wiring diagrams. Shop Drawings shall show overall dimensions and minimum clearances for all electrical equipment. Full-size drawings shall be submitted.

4. The drawings shall be prepared using graphical symbols and device function numbers conforming to the latest applicable standards of ANSI.

B. Approval Shop Drawings and Data

1. The CONTRACTOR shall furnish Shop Drawings, data, and instructions for the equipment for approval by the ENGINEER.

2. Prepare and submit a set of coordination drawings showing major elements, components, and systems of electrical equipment and materials in relationship

Electrical Specifications 26-0500 with other building components. Prepare 11”x17” or 24”x36” drawings to an accurate scale of 1/4"=1'-0" or larger. Indicate the locations of all equipment and materials, including clearances for servicing and maintaining equipment including (but not necessarily limited to) the following:

a. Electric equipment room layouts

b. Mechanical equipment room layouts

3. Prepare coordination drawings for specific equipment installations, including, but not limited to the following:

a. Generators and automatic transfer switches

b. Pad mounted and/or dry type transformers

c. Switchboards and panelboards

d. Equipment connections

e. Control panels

f. Circuit and motor disconnects

g. Feeder conduits

4. Wiring Diagrams: Provide wiring diagrams indicating field installed electrical power and control wiring and cabling layouts, overcurrent protective devices, equipment, and equipment connections.

5. Material Shop Drawings shall show:

a. Equipment locations, outlines, and layouts: Approval drawings and information shall show equipment locations with respect to the structure, enclosure construction, conduit entries where applicable, grounding plan showing ground rod locations, dimensions, arrangement of components within the enclosures, and section arrangement.

b. Bills of material: Bills of material shall give information of each piece of equipment including type, style, manufacturer, and other pertinent information such as scales, trip ratings, settings, and other information, as applicable.

c. Nameplates: Nameplate lists shall provide information on material, sizes, and engraved lettering.

d. Schematic Diagrams: Schematic diagram drawings shall show complete functional operation of the equipment including equipment devices and components that are identifiable by reference to the bill of material item.

e. Wiring diagram: Wiring diagram drawings shall show complete wiring of the equipment devices and components including terminal block numbers and wire (conductor) designations.

f. Manufacturer's data: Manufacturer's data, such as catalog cut sheets, shall be clearly marked to indicate the item being provided. The data shall provide sufficient comprehensive product information to fully demonstrate that the product meets the requirements of these specifications.

C. Final Drawings

1. The CONTRACTOR shall furnish final drawings for all electrical systems. All final drawings shall show all changes and revision dates made up to the time the drawings are furnished. The drawings shall show "as-built" equipment and installations. All drawings furnished shall apply specifically to the equipment actually furnished. No equipment shall be shipped until the drawings have been updated to show the equipment at the time of shipment. The final drawings shall

Electrical Specifications 26-0500 include the requirements of 01 33 00 – Submittals. The following final drawings shall be furnished.

a. Outlines and location of equipment relative to the structure.

b. Grounding plan and location of ground rods and grounding connections.

c. Nameplate lists.

d. Panel Directories.

e. Location of conduit hubs, knockouts, openings, and pull boxes.

f. Schematic diagrams.

g. Wiring diagrams.

D. Test Reports

1. The CONTRACTOR shall submit to the ENGINEER certified copies of test reports as required in Section 26 0800 Testing for Electrical or as required by specific sections of Division 26. Ground resistance or equipment, that does not successfully pass the testing requirements, will be rejected. Equipment tests are defined within Section 26 0800 Testing for Electrical and the specific equipment requirement Sections elsewhere in these Specifications.

E. Operation and Maintenance Instructions, Descriptive Data, and Bills of Material

1. Each set of material shall be assembled into one binder with a cover and front index sheet.

2. The operation and maintenance instructions shall be descriptive data that apply specifically to the equipment furnished and shall include the features pertaining to operation, maintenance, control, relaying, instrumentation, programming, and other features.

3. Descriptive data and bills of material shall describe the components furnished.

These data shall be such that the components can be identified as to manufacturer, type, rating, characteristics, and other identification so that a component to be replaced could be ordered from the description furnished.

1.05 QUALITY ASSURANCE

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to State of Colorado, and marked for intended use.

B. Comply with NFPA 70, the National Electrical Code (latest edition).

C. All equipment and materials will be new and unused and shall conform with the current applicable industry standards. All equipment and materials shall be installed in compliance with manufacturer’s recommendations and requirements. Workmanship and neat appearance shall be as important as electrical and mechanical operation.

Defective or damaged materials shall be replaced or repaired prior to final acceptance in a manner meeting approval of Architect and/or Engineer and at no additional cost to Owner.

D. The State of Colorado Department of Regulatory Agencies (Electrical Board) is the Authority Having Jurisdiction for the electrical portions of this project.

Electrical Specifications 26-0500

1.06 DEFINITIONS

A. Instructions such as "Provide" shall mean the same as though the words "This Contractor shall" preceded each such instruction. "Provide" shall mean "Furnish and Install."

Where the words "Accepted" or "Acceptable" are used, such "Accepted" or "Acceptable" action by the Engineer and/or Architect denotes that the work or equipment item is in conformance with the design concept of the project and, in general, complies with pertinent information given in the Contract Documents.

1.07 SEQUENCING AND COORDINATION

A. The electrical system construction sequence shall follow the general project sequence.

B. Coordinate chases, slots, inserts, sleeves, and openings with general construction work and arrange in building structure during progress of construction to facilitate the electrical installation.

C. Sequence, coordinate, and integrate installing electrical materials and equipment for efficient flow of the Work. Coordinate installing large equipment requiring positioning before closing in the building.

D. Coordinate electrical service components (primary feeder(s), utility company transformer, secondary service entrance feeder, main disconnection means and sequence, metering equipment, grounding, etc…) as well as access and connections to utility company equipment furnished by utility companies.

1. Coordinate installation and connection of exterior underground and overhead utilities and services, including provision for electricity-metering components.

2. Comply with requirements of authorities having jurisdiction and of utility company providing electrical power and other services.

E. No work shall be concealed until after inspection and approval by proper authorities.

If work is concealed without inspection and approval, Contractor shall be responsible for all work required to expose and restore the concealed work in addition to all required modifications.

F. Where electrical identification devices are applied to field-finished surfaces, coordinate installation of identification devices with completion of finished surface.

G. Where electrical identification markings and devices will be concealed by acoustical ceilings and similar finishes, coordinate installation of these items before ceiling installation.

PART 2 PRODUCTS

2.01 EQUIPMENT AND MATERIALS

A. Electrical equipment and materials shall be as specified on the drawings and in accordance with standards referenced in Article 1.03.

Electrical Specifications 26-0500

B. All equipment nameplates shall be in English. All signs and symbols shall be in accordance with ANSI Y32.2.

C. Mounting bolts, nuts, and washers for items of electrical equipment shall be ASTM A276Type 316 stainless steel. Cadmium-plated mounting hardware will not be permitted.

D. In addition to the electrical materials specified herein, the CONTRACTOR shall furnish and install shims, grout, expansion anchors, wood blocking, anchor bolts, screws, nuts, washers, and all other hardware and incidentals required to complete the electrical installation.

E. If the CONTRACTOR-furnished electrical equipment and materials are of such size, type, ratings, or other physical properties that changes are required in the approved CONTRACTOR's designs, it shall be the responsibility of the CONTRACTOR to effect all changes necessary as required and approved by the ENGINEER without additional compensation.

F. Nameplates shall be provided in compliance with Section 26 05 53 Identification for Electrical.

2.02 EQUIPMENT FOR UTILITY COMPANY'S ELECTRICITY METERING

A. Current-Transformer Cabinets: Comply with requirements of electrical power utility company.

B. Meter Sockets: Comply with requirements of electrical power utility company.

C. Service Entrance conduit and conductors: Comply with requirements of electrical power utility company.

2.03 TOUCHUP PAINT

A. For Equipment: Equipment manufacturer's paint selected to match installed equipment finish.

B. Galvanized Surfaces: Zinc-rich paint recommended by item manufacturer.

2.04 TOOLS

A. The CONTRACTOR shall furnish all special tools and appliances as required for maintenance and adjustment of electrical equipment. The CONTRACTOR shall furnish all additional tools and equipment as necessary to properly install, adjust, and check the operation of the electrical equipment.

2.05 TEMPORARY FACILITIES:

A. Responsibility for providing electricity for temporary construction facilities and construction equipment, lighting, heating, telecommunications and other systems shall be as identified in Division 01 and as coordinated between the General Contractor and Division 26 Contractor.

Electrical Specifications 26-0500

B. If AC power systems or their backup systems serving telecommunications, computer equipment, or their associated HVAC equipment and controls are taken out of service, for any reason, the Contractor shall be responsible for providing temporary systems during the period when the AC power systems or their backup systems are out of service. The Contractor shall be responsible for providing temporary power to all loads being interrupted.

PART 3 EXECUTION

3.01 ELECTRICAL EQUIPMENT INSTALLATION

A. General

1. Installation of electrical equipment shall be in accordance with the manufacturer's installation instructions. Nuts and bolts used in electrical equipment assembly and installation shall be tightened by the use of torque wrenches to torque values recommended by the equipment manufacturer.

2. The CONTRACTOR shall make all electrical wire, cable, conduit, and grounding connections and furnish all miscellaneous materials that are required for making these connections to the equipment.

3. The CONTRACTOR shall drill all holes and provide all fastenings required for mounting or installing electrical equipment and materials.

4. Any electrical equipment installed on concrete foundations shall be given full and even bearing by being grouted in place. Grouting shall be in accordance with Section 03 30 00 – Concrete

5. Repair of damage to painted and/or galvanized surfaces shall be made in accordance with manufacturer’s recommendations.

B. Equipment Identification

1. The completed electrical installation shall be provided with adequate identification of circuits and equipment to assist personnel during maintenance.

2. Nameplates shall be provided for all panelboards, panels, starters, switches, and push button stations. In addition to the nameplates shown, control devices shall be equipped with standard collar type legend plates, as required.

3. Control devices within enclosures shall be identified with nameplates.

4. Terminal strips shall be identified by imprinted marker strips

C. Headroom Maintenance: If mounting heights or other location criteria are not indicated, arrange and install components and equipment to provide the maximum possible headroom.

D. Equipment: Install to facilitate service, maintenance, and repair or replacement of components. Adhere to clearances required by the NEC-latest edition, NFPA 70.

Connect for ease of disconnecting, with minimum interference with other installations.

E. Right of Way: Give to raceways and piping systems installed at a required slope.

Electrical Specifications 26-0500

3.02 UTILITY COMPANY ELECTRICITY-METERING EQUIPMENT

A. Install CT enclosures, meters, service entrance feeders, and other equipment according to the local utility company's written requirements. Coordinate the installation, access to transformers and other utility company equipment with the utility company.

B. Provide grounding, trenching and empty conduits for the primary feeder as required by the local utility company. Install according to the local utility company's written requirements.

3.03 CUTTING AND PATCHING

A. Cut, channel, chase, and drill floors, walls, partitions, ceilings, and other surfaces required to permit electrical installations. Perform cutting by skilled mechanics of trades involved.

B. Coordinate the repair and refinish of disturbed finish materials and other surfaces with the appropriate trade to have areas restored to match adjacent undisturbed surfaces.

This contractor is responsible for all costs of repairs required by work performed by this contractor. Install new fireproofing where existing firestopping has been disturbed. Repair and refinish materials and other surfaces by skilled mechanics of trades involved.

3.05 FIELD TESTING AND STARTUP

A. After the electrical installations have been completed, the CONTRACTOR shall operationally test the electrical equipment and circuits installed under these specifications, unless specifically indicated otherwise herein, to demonstrate that the requirements of these specifications have been fulfilled.

B. The CONTRACTOR shall have available, at the construction site, drawings that show the electrical installation at the time of the examination, instruction books, equipment tests reports, coordination curves, and data.

C. Immediately prior to the acceptance tests, the CONTRACTOR shall service all electrical equipment in accordance with manufacturer's instructions.

D. While performing the functions of testing and checkout, the CONTRACTOR shall retain full responsibility for the removal and replacement of any wiring connections. The CONTRACTOR shall make wiring changes, setting adjustments, equipment replacements, or other revisions, which are necessary for the proper and adequate functioning of the installation. The CONTRACTOR shall be responsible for and shall replace at the CONTRACTOR’s own expense any wiring, instruments, or equipment which may be damaged in the checkout process.

3.06 FIELD QUALITY CONTROL

A. Inspect installed components for damage and faulty work.

Electrical Specifications 26-0500

3.07 CLEANING AND PROTECTION

A. On completion of installation, including outlets, fittings, and devices, inspect exposed finish. Remove burrs, dirt, paint spots, and construction debris.

B. Protect equipment and installations and maintain conditions to ensure that coatings, finishes, and cabinets are without damage or deterioration at time of Final Acceptance.

3.08 WARRANTY

A. The CONTRACTOR shall warranty all electrical workmanship and materials for a minimum of two years or for the warranty period specified in individual sections whichever is greater. The warranty period shall extend from the date of Final Acceptance.

B. In addition to the standard warranties the CONTRACTOR shall attend a warranty walk through meeting to be held at eleven months from the date of Final Acceptance.

End of Section

Electrical Specifications 26-0519

SECTION 26 0519

LOW-VOLTAGE POWER CONDUCTORS AND CABLES

PART 1 GENERAL

1.01 SCOPE

A. This Section includes building wires and cables and associated connectors, splices, and terminations for wiring systems rated 600V and less.

B. Related Documents: Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 through Division 35 Specification Sections, apply to this Section.

1.02 REFERENCES

A. The latest edition of the following standards and codes are the minimum requirements for this work.

1. Insulated Cable Engineer's Association (ICEA)

2. InterNational Electrical Testing Association (NETA ATS)

3. National Electrical Contractors Association (NECA)

4. National Electrical Manufacturer's Association (NEMA)

5. National Fire Protection Association (NFPA)

6. NFPA 70, The National Electrical Code (NEC-latest edition)

7. Underwriters' Laboratories, Inc. (UL)

1.03 SUBMITTALS

A. The CONTRACTOR shall submit manufacturers’ catalog data for the wire and cables in accordance with the requirements of this Section, Section 26 0500 – Common Work Results for Electrical, and Section 01 3300 –Submittal Procedures.

1.04 QUALITY ASSURANCE

A. Listing and Labeling: Provide wires and cables specified in this Section that are listed and labeled.

1. The Terms "Listed" and "Labeled": As defined in NFPA 70, Article 100.

2. Listing and Labeling Agency Qualifications: A "Nationally Recognized Testing

Laboratory" as defined in OSHA Regulation 1910.7.

B. Comply with NFPA 70.

PART 2 PRODUCTS

2.01 MATERIALS

Electrical Specifications 26-0519

A. The insulated conductors furnished shall be of the proper voltage rating, type, and size for the application, and shall have been manufactured within twenty four (24) months prior to receipt of the notice to proceed under this contract. All conductors shall be stranded copper unless specifically stated otherwise. All conductors shall be suitable for installation in a vertical position. All conductors shall have an AWG or kcmil designation.

B. 600-Volt, Single Conductor for General Use Other Than Direct Burial: The insulated conductors shall conform to the requirements of NEC-latest edition, shall bear the UL label, shall be suitable for general use other than direct burial, and shall be NEC-latest edition type THHN for interior installations, XHHW for underground installations.

C. Polyethylene warning tape: Polyethylene warning tape for installation above buried power feeders shall be 6 inches wide, yellow in color, with CAUTION printed continuously and an integrated tracer wire for the full length of the tape.

D. Multiconductor Power and Control Cable: Multiconductor cables shall be provided as noted on the Drawings. The multiconductor cables shall be as follows:

1. 600 volts insulated.

2. Multiconductor type suitable for installation in trays and conduits.

3. Individual conductors shall be insulated with NEC-latest edition type THHN insulation and color-coded.

4. Polyester tape, or equivalent, over the conductor group.

5. Shielded with 100 percent aluminum foil taper and with minimum No. 18 AWG tinned and copper drain wire.

6. An overall covering (jacket) of thermoplastic or neoprene.

a. Cable with No. 14 AWG individual conductors:

i. 3/C and smaller - 45 mils thick.

ii. 4/C to 12/C - 60 mils thick.

iii. Over 12/C - 80 mils thick.

E. Instrumentation Cable: The instrumentation cable shall be suitable for all uses and shall be as follows:

1. Twisted pair, individually shielded, having varying lengths of lay to minimize crosstalk.

2. UL listed and labeled, Type TC.

3. Voltage: 300V.

4. Conductors tinned copper, stranded, and No. 18 AWG minimum.

5. Pair Shield: Aluminum coated Mylar with tinned copper drain wire, No. 18 AWG minimum.

6. Jacket: Plenum Rated.

7. Conductor Identification: ICEA S-61-402, black and white in pairs. White conductor printed numerically for group identification.

F. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1. Wires and Cables:

Electrical Specifications 26-0519

a. Southwire Company.

b. The Okonite Company

c. USA Wire & Cable, Inc.

2. Connectors for Wires and Cables:

a. AMP Incorporated.

b. General Signal; O-Z/Gedney Unit.

c. 3M Company; Electrical Products Division.

2.02 WIRES AND CABLES 600-VOLT NOMINAL OR LESS

A. UL-listed building wires and cables with appropriate ratings for installed application.

B. Rubber Insulation Material: Comply with NEMA WC 3.

C. Thermoplastic Insulation Material: Comply with NEMA WC 5.

D. Cross-Linked Polyethylene Insulation Material: Comply with NEMA WC 7.

E. Ethylene Propylene Rubber Insulation Material: Comply with NEMA WC 8.

F. Factory applied color coded insulation the entire length of conductors for all wire.

G. Conductor Material: Copper.

H. Stranding: Solid conductor for No. 10 AWG and smaller (except for Engine/Generator Control Wiring); stranded conductor for larger than No. 10 AWG.

I. Insulation Color: All insulated conductors (service entrance, feeder, and branch circuit) shall have full colored insulation, colors as specified in Section 26 05 53 Identification For Electrical Systems, for the entire length of the conductor. Neutral conductors installed, in compliance with the NEC-latest edition for each single pole breaker, shall have a tracer stripe to match the phase conductor color. (Contact Omnicable.com / 303-574-9444 or equivalent for striped conductors).

J. Use of MC cable is prohibited except for luminaire connection whips.

K. Use of AC, NM, ENT, or other manufactured pre-wired systems cable is prohibited.

2.03 CONNECTORS AND SPLICES 600-VOLT NOMINAL OR LESS

A. UL-listed, factory-fabricated wiring connectors of size, ampacity rating, material, type, and class for application and service indicated. Comply with Project's installation requirements and as specified in Part 3 “Wire and Insulation Applications" Article.

B. Electrical Tape:

1. Plastic tape, 8.5 mils maximum thickness, 1,000,000 megohms minimum insulation resistance, oil-resistant vinyl backing, oil-resistant acrylic adhesive, incapable of supporting combustion per ASTM D-568 Test Method B.

2. 3M +33 Type.

Electrical Specifications 26-0519

C. Cable Lubricants:

1. Wire pulling lubricants shall be specifically recommended by the cable manufacturer for assisting in pulling jacketed cables. Cable lubricants shall be soapstone, graphite, or talc for rubber or plastic-insulated cables. Lubricants shall be rated for use in low temperatures (-20º F). Lubricant shall not be deleterious to the cable sheath, jacket, or outer coverings.

2. Ideal Yellow #77, Aqua Blue, Poly Water, Dyna Blue or equivalent.

2.04 MISCELLANEOUS WIRING MATERIAL

A. Miscellaneous Connecting and Splicing Devices: Miscellaneous products, such as heat shrink tubing, electrical insulation, plug caps, splices and kits, tapes, terminal blocks, and terminations, shall be approved for the specific application.

B. Joint compounds shall be approved for the specific type metal joint to be prepared.

C. Cable ties, clamps, and identification shall be nylon, self-locking.

D. Fire-seal fittings, certified by UL, for installation where sleeves penetrate fire-rated walls, floors, etc., as required by NEC-latest edition Article 300-21. Size fire seals for the application.

PART 3 EXECUTION

3.01 GENERAL

A. All wiring shall be in compliance with the NEC-latest edition: All single phase branch circuits originating at single pole or multi-pole breakers (120V single phase circuits, or 277V single phase circuits) shall be installed with a dedicated neutral conductor for each phase conductor. The neutral conductor shall have a tracer stripe (the stripe color shall match the color of the phase conductor).

B. All wiring shall be routed through an UL-listed raceway regardless of voltage application, unless specified otherwise on the drawings or under other sections of these Specifications.

C. Derate conductor ampacities based on the NEC-latest edition when more than three current carrying conductors are installed in one raceway.

D. No conductors or cable shall be pulled into any portion of conduit system until all construction work, which might damage the wire, has been completed and raceways have been swabbed. In no case shall wire be left exposed where students and staff may have access.

E. Lubricate cables to facilitate pulling. Lubrication material shall be inert to cable and raceways and rated for -20°F for pulling #4AWG and larger wires.

Electrical Specifications 26-0519

F. Install compression connectors with hydraulic die, embossing die code into connector.

Connect to bus with Belleville type washers for positive pressure over complete contact area. Insulate with heat shrink tubing.

G. Sizes of conduits, unless specifically shown otherwise, shall be determined from Chapter 9 of the latest National Electrical Code based on THW wire in electric metallic tubing.

3.02 INSTALLATION 600 VOLTS, NOMINAL OR LESS GENERAL

A. Unless otherwise indicated, all wiring for branch circuits shall be #12 AWG protected by 20-ampere circuit breakers. Wire size shall be increased to account for voltage drop for all 120-volt circuits over 75 feet, and all 277-volt circuits over 150 feet to the first outlet. Wire size shall be uniform for the entire length of the circuit unless noted otherwise. Homeruns which indicate upgrading circuit conductors for voltage drop, e.g. #10AWG wire on 20-ampere circuit, shall have the conductor size indicated carried throughout the circuit to the last device or fixture.

B. Do not splice feeders or dedicated branch circuits unless otherwise indicated. Install all wire continuous from outlet to outlet or terminal to terminal. Splices in cables when required shall be made in handholes, pull boxes or junction boxes and shall be in strict accordance with cable manufacturer's recommendations utilizing solderless connectors UL approved for the use (splices for pole mounted luminaires shall be made in the curved carlon box installed in the pole base unless the pole base is flush with grade in which case splices shall be made in the pole handhole). Make up splices in outlet boxes with 8 inches of correctly color-coded tails left in box. Splices in wires size #10AWG and smaller shall be made with insulated spring type wire connectors, "Scotchlok." Use U.L. listed compression connectors (Ilsco Clear Tap or Burndy Hi Press), for wire splices and taps, #8AWG and larger. All insulating tape used on circuits of 600 volts and less shall be 3-M +33. Tape or heat shrink uninsulated conductors and connectors with electrical tape to 150 percent of the insulation value of the conductor. Terminate spare conductors with electrical tape.

C. Make connections, splices, taps and joints with solderless devices, mechanically and electrically secure.

D. Provide a separate neutral for dimmer branch circuits, ground fault interrupter branch circuits, lighting branch circuits serving electronic ballasts.

E. All phase, neutral, and ground conductors shall be tagged with corresponding circuit numbers at panelboard as well as at all junction and outlet boxes.

F. Make all ground, neutral, and line connections to receptacle and wiring device terminals by means of the side terminal screw connections. Branch conductors shall not be connected to the device with backside “push-in” connectors. Provide ground jumper from outlet box to ground terminal of receptacle.

3.03 STORAGE AND HANDLING

A. Store wiring materials in a protected environment not subject to physical damage or the effects of sunlight or inclement weather.

Electrical Specifications 26-0519

3.04 FIELD QUALITY CONTROL

A. Wire and Cable Tests (600 Volts): Measure the insulating resistance of service entrance conductors, feeder circuit conductors, and service ground. Measurements shall be taken between conductors and between conductors and ground. Resistance shall be 1,000,000 ohms or more when tested at 500 volts by megger without branch circuit loads. Tests and procedures shall meet the approval of the ENGINEER and shall be in accordance with the applicable ICEA standards for the wires and cables to be installed.

Furnish all instruments, equipment, and personnel required for testing, and conduct tests in the presence of the ENGINEER Submit written reports of the tests and results to the ENGINEER.

B. Testing: On installation of wires and cables and before electrical circuitry has been energized, demonstrate product capability and compliance with requirements.

1. Procedures: Perform each visual and mechanical inspection and electrical test stated in NETA ATS, Section 7.3.1. Certify compliance with test parameters.

C. Correct malfunctioning conductors and cables at Project site, where possible, and retest to demonstrate compliance; otherwise, remove and replace with new units and retest.

Electrical Specifications 26-0526

SECTION 26 0526

GROUNDING AND BONDING FOR ELECTRICAL

PART 1 GENERAL

1.01 SCOPE

A. This Section includes grounding of electrical systems and equipment. Grounding requirements specified in this Section may be supplemented by special requirements of systems described in other Sections.

B. Related Documents: Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 through Division 35 Specification Sections, apply to this Section.

1.02 REFERENCES

A. AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)

ANSI/ASTM B3 Soft or Annealed Copper Wire ANSI/ASTM B8 Concentric-Lay –Stranded Copper Conductors, Hard, Medium-Hard, or Soft ANSI/UL 467 Grounding and Bonding Equipment

B. NFPA70 – NATIONAL ELECTRICAL CODE (NEC-latest edition)

1.03 DEFINITIONS

A. Bonding and Grounding for Telecommunications / Data Communications Systems:

Telecommunications Main Grounding Busbar (TMGB) Telecommunications Grounding Busbar (TGB) Telecommunications Bonding Backbone (TBB) conductor.

1.04 SUBMITTALS

A. Product Data: For the following:

1. Ground rods

2. Ground bars

3. Ground enhancement material

B. Qualification Data: For firms and persons specified in "Quality Assurance" Article.

C. Field Test Reports: Submit written test reports to include the following:

1. Test procedures used.

2. Test results that comply with requirements.

3. Results of failed tests and corrective action taken to achieve test results that comply with requirements.

Electrical Specifications 26-0526

D. The CONTRACTOR shall submit manufacturers catalog data for the grounding materials, grounding drawing, and test reports in accordance with the requirements of this Section, Section 26 05 00 – Common Work Results for Electrical, and Section 01 33 00 – Submittal Procedures.

1.05 QUALITY ASSURANCE

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to the State of Colorado and marked for intended use.

1. Comply with UL 467.

PART 2 PRODUCTS

2.01 MANUFACTURERS

A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1. Grounding Conductors, Cables, Connectors, and Rods:

a. ILSCO

b. Kearney/Cooper Power Systems

c. Lyncole XIT Grounding

d. O-Z/Gedney Co.; a business of the EGS Electrical Group

e. Raco, Inc.; Division of Hubbell

f. Thomas & Betts, Electrical

2. Grounding Bus Bars for power and telecommunications systems:

a. Chatsworth (CPI)

b. Cooper B-Line

c. Erico (nVent)

d. Harger

e. Hubbell

f. ILSCO

g. Legrand (Ortronics)

h. Panduit

i. Thomas & Betts, Electrical

2.02 GROUNDING CONDUCTORS

A. For insulated conductors, comply with Division 26 Section "Low-Voltage Power Conductors and Cables."

B. Material: Copper.

C. Equipment Grounding Conductors: Insulated with green-colored insulation.

D. Grounding Electrode Conductors: Stranded cable.

Electrical Specifications 26-0526

E. Underground Conductors: Bare, tinned, stranded, unless otherwise indicated.

F. Bare Copper Conductors: Comply with the following:

1. Solid Conductors: ASTM B 3.

2. Assembly of Stranded Conductors: ASTM B 8.

3. Tinned Conductors: ASTM B 33.

G. Copper Bonding Conductors: As follows:

1. Bonding Cable: 28 kcmil, 14 strands of No. 17 AWG copper conductor, 1/4 inch (6.4 mm) in diameter.

2. Bonding Conductor: No. 4 or No. 6 AWG, stranded copper conductor.

3. Bonding Jumper: Bare copper tape, braided bare copper conductors, terminated with copper ferrules; 1-5/8 inches (42 mm) wide and 1/16 inch (1.5 mm) thick.

4. Tinned Bonding Jumper: Tinned-copper tape, braided copper conductors, terminated with copper ferrules; 1-5/8 inches (42 mm) wide and 1/16 inch (1.5

mm) thick.

H. Grounding Bus Bar: Bare, annealed copper bars of rectangular cross section, mounted to wall with insulators. Bus bar dimensions shall be 1/4-by-4-by-20-inch minimum (6.35-by-100-by-500-mm), copper or copper alloys having a minimum of 95% conductivity.

2.03 CONNECTOR PRODUCTS

A. Comply with IEEE 837 and UL 467; listed for use for specific types, sizes, and combinations of conductors and connected items.

B. Bolted Connectors: Bolted-pressure-type connectors, or compression type. Burndy Hi- Press series lugs, ILSCO Clear Taps may be used for wire sizes #8 through 500kcmil.

C. Welded Connectors: Exothermic-welded type, in kit form, and selected per manufacturer's written instructions.

2.04 GROUNDING ELECTRODES

A. Ground Rods: Sectional type; copper-clad steel.

1. Size: 3/4 in diameter by 120 inches.

B. Concrete Encased Electrode: The concrete encased electrode shall consist of a minimum of 20 feet of bare #4 copper conductor or larger installed as a single run, or #5 rebar or larger installed as a single run, or multiple column (2 or more) grid with equal size cross members 18 inches on center welded (or double-tied) together and encased with a minimum of two inches of concrete cover in all directions.

Electrical Specifications 26-0526

PART 3 EXECUTION

3.01 APPLICATION

A. Use only copper conductors for both insulated and bare grounding conductors in direct contact with earth, concrete, masonry, crushed stone, and similar materials.

B. In raceways, use insulated equipment grounding conductors.

C. Exothermic-Welded Connections: Use for connections to structural steel and for underground connections, except those at test wells.

D. Equipment Grounding Conductor Terminations: Use bolted pressure clamps.

E. Ground Rod Clamps at Test Wells: Use bolted pressure clamps with at least two bolts.

3.02 EQUIPMENT GROUNDING CONDUCTORS

A. Comply with NFPA 70, Article 250, for types, sizes, and quantities of equipment grounding conductors, unless specific types, larger sizes, or more conductors than required by NFPA 70 are indicated.

B. Install equipment grounding conductors in all feeders and branch circuits. This grounding conductor shall be in addition to the ground path provided by the continuously grounded metallic raceway system that encloses the phase and neutral conductors .

Where there are parallel feeders installed in more than one raceway, each raceway shall have a green insulated equipment ground conductor. Provide ground bushings bonded to grounding conductor at both ends of all feeder conduits.

C. Nonmetallic Raceways: Install an equipment grounding conductor in nonmetallic raceways unless they are designated for telephone or data cables.

D. Air-Duct Equipment Circuits: Install an equipment grounding conductor to duct-mounted electrical devices operating at 120 volts and more, including air cleaners and heaters. Bond conductor to each unit and to air duct.

E. Water Heater, Heat-Tracing, and Antifrost Heating Cables: Install a separate equipment grounding conductor to each electric water heater, heat-tracing, and antifrost heating cable. Bond conductor to heater units, piping, connected equipment, and components.

F. Signal and Communication Systems: For telephone, alarm, voice and data, and other communication systems, provide insulated grounding conductor in raceway from grounding electrode system to each service location, terminal cabinet, wiring closet, and central equipment location in compliance with TIA-607-D.

1. Service and Central Equipment Locations and Wiring Closets: Terminate grounding conductor on a telecommunications grounding bus bar.

2. Terminal Cabinets: Terminate grounding conductor on cabinet grounding terminal.

Electrical Specifications 26-0526

G. Metal Poles Supporting Outdoor Lighting Fixtures: Provide a grounding electrode in addition to installing a separate equipment grounding conductor with supply branch-circuit conductors.

3.03 INSTALLATION

A. Ground Rods: Install at least three rods spaced at least one-rod length from each other and located at least the same distance from other grounding electrodes.

1. Drive ground rods until tops are 2 inches (50 mm) below finished floor or final grade, unless otherwise indicated.

2. Interconnect ground rods with grounding electrode conductors. Use exothermic weld connections without exposing steel or damaging copper coating.

B. Grounding Conductors: Route along shortest and straightest paths possible, unless otherwise indicated. Avoid obstructing access or placing conductors where they may be subjected to strain, impact, or damage.

C. Bonding Straps and Jumpers: Install so vibration by equipment mounted on vibration isolation hangers and supports is not transmitted to rigidly mounted equipment. Use exothermic-welded connectors for outdoor locations, unless a disconnect-type connection is required; then, use a bolted clamp. Bond straps directly to the basic structure taking care not to penetrate any adjacent parts. Install straps only in locations accessible for maintenance.

D. Metal Water Service Pipe: Provide insulated copper grounding conductors, in conduit, from building's main service equipment, or grounding bus, to main metal water service entrances to building. Connect grounding conductors to main metal water service pipes by grounding clamp connectors. Where a dielectric main water fitting is installed, connect grounding conductor to street side of fitting. Bond metal grounding conductor conduit or sleeve to conductor at each end.

E. Water Meter Piping: Use braided-type bonding jumpers to electrically bypass water meters. Connect to pipe with grounding clamp connectors.

F. Bond interior metal piping systems and metal air ducts to equipment grounding conductors of associated pumps, fans, blowers, electric heaters, and air cleaners.

Where metallic piping and duct systems are rendered metallically non-continuous by non-conductive couplings, provide bonding jumpers to restore grounding continuity. Use braided-type bonding straps.

G. Bond each aboveground portion of gas piping system upstream from equipment shutoff valve.

H. Bonding and Grounding for Telecommunications / Data Communications Systems: For telephone, alarm, voice, data, and other communication systems, provide TMGB in the MDF, and a TGB in each IDF. TMGB is interconnected to each TGB by a TBB conductor.

1. Service and Central Equipment Locations such as the MDF or other communications entrance facility: Provide a TMGB bonded to facility Electrical Service Grounding Busbar.

Electrical Specifications 26-0526

3.04 CONNECTIONS

A. General: Make connections so galvanic action or electrolysis possibility is minimized.

Select connectors, connection hardware, conductors, and connection methods so metals in direct contact will be galvanically compatible.

B. All connections to ground buses shall be by mechanical means.

C. Exothermic-Welded Connections: Comply with manufacturer's written instructions.

Welds that are puffed up or that show convex surfaces indicating improper cleaning are not acceptable.

D. Equipment Grounding Conductor Terminations: For No. 8 AWG and larger, use pressure-type grounding lugs. No. 10 AWG and smaller grounding conductors may be terminated with winged pressure-type connectors. Use Burndy QGFL 34 B1 type connectors for attachment to building steel

E. Noncontact Metal Raceway Terminations: If metallic raceways terminate at metal housings without mechanical and electrical connection to housing, terminate both ends of conduit with a grounding bushing. Connect grounding bushings with a bare grounding conductor to grounding bus or terminal in housing. Bond electrically noncontinuous conduits at entrances and exits with grounding bushings and bare grounding conductors, unless otherwise indicated.

F. Tighten screws and bolts for grounding and bonding connectors and terminals according to manufacturer's published torque-tightening values. If manufacturer's torque values are not indicated, use those specified in UL 486A and UL 486B.

G. Compression-Type Connections (#8 and Larger): Use hydraulic compression tools to provide correct circumferential pressure for compression connectors. Use tools and dies recommended by connector manufacturer. Provide embossing die code or other standard method to make a visible indication that a connector has been adequately compressed on grounding conductor.

H. Moisture Protection: If insulated grounding conductors are connected to ground rods or grounding buses, insulate entire area of connection and seal against moisture penetration of insulation and cable.

3.05 FIELD QUALITY CONTROL

A. Tests: Perform the quality-control testing identified in Section 260800-Testing for Electrical.

B. Final testing and reporting shall be performed by the independent testing firm.

Electrical Specifications 26-0529

SECTION 26 0529

HANGERS AND SUPPORTS FOR ELECTRICAL

PART 1 GENERAL

1.01 SCOPE

A. The CONTRACTOR shall furnish and install supports, fasteners, and anchors for all electrical conduits; boxes, switchboards, panelboards, transformers, and accessories required for a complete and secure electrical system. The term "conduit" shall be considered synonymous with the term "raceway" as defined in Article 100 of the NEC-latest edition.

B. Related Documents: Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 through Division 35 Specification Sections, apply to this Section.

1.02 REFERENCES

A. The latest edition of the following standards and codes are the minimum requirements for this work.

NFPA No. 70 National Electrical Code (NEC-latest edition)

1.03 SUBMITTALS

A. The CONTRACTOR shall submit product data, drawings, and descriptive information in accordance with the requirements of this Section, Section 26 0500 – Common Work Results for Electrical, and Section 01 3300 –Submittal Procedures.PART 2 PRODUCTS

2.01 PERFORMANCE REQUIREMENTS

A. For structures assigned to Seismic Design Category B, C, D, E or F, where the requirements of Section 13.2.1 of ASCE 7 for nonstructural components, supports or attachments are met by seismic qualification as specified in Item 2 therein, components shall meet the seismic qualification by analysis, testing or experience data. Certificates of compliance for the seismic qualification shall be submitted to the Building Official/Authority Having Jurisdiction.

2.02 SUPPORTING DEVICES FOR ELECTRICAL COMPONENTS

A. Provide hangers and supports to support raceways, fixtures, cabinets, boxes, etc. as manufactured by B-Line, Caddy, Unistrut, or Kindorf.

B. Material: Cold-formed steel, with corrosion-resistant coating.

C. Metal Items for Use Outdoors or in Damp Locations: Steel, hot-dip galvanized after fabrication.

D. Slotted-Steel Channel Supports: Flange edges turned toward web, and 9/16-inch- (14-mm-) diameter slotted holes at a maximum of 2 inches (50 mm) o.c., in webs.

1. Channel Thickness: Selected to suit structural loading.

2. Fittings and Accessories: Products of the same manufacturer as channel supports.

E. Raceway and Cable Supports: Manufactured clevis hangers, riser clamps, straps, threaded C-clamps with retainers, trapeze hangers, wall brackets, roof supports, and spring-steel clamps or click-type hangers.

1. Trapeze hangers shall be an assembly consisting of parallel vertical threaded rods suspended from structure, using support devices and methods listed herein, connected at the lower ends by a horizontal slotted steel channel member. All components shall be engineered and manufactured specifically for use and assembly as supports/hangers.

F. Pipe Sleeves: ASTM A 53, Type E, Grade A, Schedule 40, galvanized steel, plain ends.

G. Roof Supports: Pyramid based supports with rubber base and galvanized steel mounting top cover. Supports shall be mounted on top of 12”W by 12”L by 1.5”H concrete paving stones. Provide additional 24” square roof membrane material between the roofing material and paving stones or other material as directed by roofing manufacturer/supplier/contractor.

H. Fabricated supports, use structural steel or steel channel, rigidly welded or bolted to present a neat appearance.

I. Expansion Anchors: Carbon-steel wedge or sleeve type. Anchors shall be removable type.

J. Toggle Bolts: All-steel springhead type.

K. Mounting bolts, nuts, and washers for items of electrical equipment shall be ASTM A276Type 316 stainless steel. Cadmium-plated mounting hardware will not be permitted.

L. Perforated pipe strap and wire supports are prohibited.

M. Powder-actuated anchors are prohibited without specific written permission.

N. Concrete housekeeping pads for transformers and free standing floor…