Attachment 001- Statement of Work.pdf

STATEMENT OF WORK

11318 WAREHOUSE #1 ELECTRICAL

SALMON-CHALLIS NATIONAL FOREST

1.1 SCOPE OF CONTRACT

A. This project includes the installation of a 100-amp electrical subpanel, one 50-amp 240-volt circuit and receptacle, two 20-amp 240-volt circuits, 120-volt circuits with fourteen receptacles, and one 240-volt circuit with ceiling mounted receptacle. This work will be within a Forest Service owned warehouse and connected to an existing electrical panel.

Final locations for new subpanel and receptacle locations will be determined onsite with Contracting Officer’s Representative (COR).

1. The work includes:

a. The installation of a subpanel with taps to a nearby existing panelboard to provide enough breaker space.

b. Connection and ensuring proper operation electrical receptacles, both 120 and 240-volt.

1.2 PROJECT LOCATIONS

A. The project is located at the Salmon-Cobalt District compound of the Salmon-Challis National Forest, Lemhi County, Idaho. Address 311 McPherson St. Salmon, Idaho 83467.

1.3 SITE INFORMATION AND LIMITATIONS

A. The following site conditions are considered incidental to the contract and the contractor will not be paid directly for any of the following items:

1. Construction sites are on a Forest Service Administrative Site and is closed to the public. The Forest Service will notify Forest Employees of construction work. The Contractor will be responsible for signing and limiting of Forest Service employees within construction boundary.

2. All construction equipment shall be pressure washed before entering National Forest System lands. The removal of mud and debris from treads, tracks, and undercarriage, with emphasis on axles, frame, cross-members, motor mounts, and underneath steps, running boards, and front bumper/brush guard assemblies will be required. The purpose is to reduce or eliminate the transportation of noxious weeds, which is required by Federal and State regulations.

3. Water is available at the site for construction purposes.

4. Site Pictures:

Attachment 002- Statement of Work

Figure 1. Existing Electrical Panel Location

Figure 2. Interior of Existing Panel

Figure 3. Distance from Existing Panel to Proposed Subpanel Location (In red)

Figure 4. Proposed Location of New Subpanel (In red)

Figure 5. Installation of 120v receptacles within this space

Figure 6. Additional photo of 120v receptacle space

Figure 7. Additional photo of 120v receptacle space

Figure 8. Upper Loft to install additional 120v receptacles

1.4 TRAFFIC CONTROL AND CONSTRUCTION SIGNING

A. No work that endangers, interferes, or conflicts with traffic or access to work sites shall be performed until a plan for satisfactory warning and handling of traffic has been submitted by the contractor and approved by the COR and Idaho Department of Transportation. Construction signing for traffic control shall conform to the Manual of Uniform Traffic Control Devices (MUTCD). All traffic control signs will be placed in areas adequate for a truck pulling a fifth wheel trailer to be turned around. Contractor shall not be paid directly for this item, rather it will be considered incidental to other items of work listed in the Schedule of Items.

1.5 WORK CAMPS, STAGING AND STORAGE AREAS

A. Areas for staging operations and storage of materials shall be approved by the CO. The Contractor must request in writing for approval from the CO to stage work trailers on site.

B. No overnight camping will be allowed on site.

1.6 INSPECTION OF WORKSITE

A. The contractor acknowledges they have taken the necessary steps to ascertain the nature and location of work and have investigated and satisfied themselves as to the general and local conditions that can affect the work or its cost. Any failure of the contractor to take the actions described and acknowledged in this paragraph will not relieve the Contractor from the responsibility of estimating properly the difficulty and cost of successfully performing the work, or for proceeding to successfully perform the work without additional expenses to the government.

1.7 START DATE

A. November 4, 2024.

1.8 CONTRACT TIME

A. Base Bid: 14 Calendar Days

1.9 SPECIFICATIONS

A. The following specifications are attached. Some sections in the schedule of items refer to other sections not listed and are subsidiary to or are included in payment for other pay items in this contract. These items are considered incidental, and no additional compensation will be made.

SECTION 260000 - COMMON WORK RESULTS FOR ELECTRICAL

SECTION 260519 - LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND

CABLES

SECTION 260526 - GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS

SECTION 260533.13 - CONDUITS FOR ELECTRICAL SYSTEMS

SECTION 260553 - IDENTIFICATION FOR ELECTRICAL SYSTEMS

END OF SECTION C

September 2024

COMMON WORK RESULTS FOR ELECTRICAL 260000-1

USDA FOREST SERVICE, R4

11318 WAREHOUSE #1 ELECTRICAL

SECTION 260000 - COMMON WORK RESULTS FOR ELECTRICAL

PART 1 - GENERAL

1.1 SUMMARY

A. This Section specifies supplemental requirements generally applicable to the Work specified in Division 26. This Section is also referenced by related Work specified in other Divisions.

B. Section Includes:

1. Electrical Submittals

2. Measurement and Payment

3. Electrical equipment coordination and installation.

4. Common electrical installation requirements.

5. Equipment grounding and bonding.

6. Hangers and supports.

1.2 REFERENCES

A. Abbreviations and Acronyms for Electrical Terms and Units of Measure:

1. A: Ampere, unit of electrical current.

2. AC or ac: Alternating current.

3. AWG: American wire gauge; see ASTM B258.

4. C: Conduit, raceway, or duct bank.

5. EGC: Equipment grounding conductor.

6. GND: Ground.

7. HACR: Heating, air conditioning, and refrigeration.

8. PVC: Polyvinyl chloride.

9. SZ: Nominal conduit size in inches.

10. UL: (standards) Underwriters Laboratories, Inc.; (product categories) UL, LLC.

11. UL CCN: UL Category Control Number.

12. V: Volt, unit of electromotive force.

13. V(ac): Volt, alternating current.

1.3 QUALITY ASSURANCE

A. The installation shall conform to the latest edition (based on published year) of the National Electrical Code (NFPA 70) and to the requirements specified herein.

1. When conflicting with locally adopted electrical code, the most stringent shall apply.

COMMON WORK RESULTS FOR ELECTRICAL 260000-2

B. The Contractor shall perform all work necessary and required to accomplish the task as detailed on the drawings and discussed in the installation notes. All work shall be done by a state licensed electrician.

C. Electrical equipment, general: Listed and labeled in accordance with NFPA 70, by qualified electrical testing laboratory recognized by authorities having jurisdiction and marked for intended location and application.

1.4 SUBMITTALS

A. Product Data:

1. For any substitutions for equipment referred to by name in Division 26 specifications or the drawings submitted and approved before installation. See Article 2.1.

a. Proposed substitutions shall clearly indicate “Proposed Substitution #” and include the cutsheet for the item the proposed and the item it would replace labeled “For #.”

1) “#” indicates a unique number assigned to the substitution and the original item called for.

b. Also indicate purpose for each products submittal:

1) Or-Equal: Products deemed equal or better than the equipment or product listed. Considered requests for substitutions for convenience and require.

2) Unavailable, or Lead Time:

a) Unavailable: The listed product called for is no longer manufactured.

b) Lead Time: Because listed equipment significantly impacts construction schedule because of lead time.

c) Contractor must declare the possibility as soon as possible to permit establishing a mitigation plan for minimizing risks to system performance and construction schedule.

3) As Called For: Submittals for equipment and products as called are not required unless noted for submittal in the related Section or submitted as part of the O&M Manual(s). These may not be reviewed by the Government.

2. Submittals for general common items such as for conduit, fittings, conductors and cables, connectors, etc. not called out by part number and manufacturer, are typically not required unless otherwise noted in the corresponding specification section.

a. Country of origin may be an issue which may be cause for rejection of some materials.

COMMON WORK RESULTS FOR ELECTRICAL 260000-3

3. Compile and submit based on this and other sections in Divisions 26, 27, and 28.

1.5 MEASUREMENT AND PAYMENT

A. The work in this section, including all incidentals in other electrical sections, shall be measured, and paid for by the following method as shown in the Schedule of Items:

1. Electrical Work - Lump Sum including full compensation for all labor, materials, and incidentals necessary to complete the work specified, including all wiring and all other incidentals necessary for a functional system.

PART 2 - PRODUCTS

2.1 PRODUCTS REFERRED TO BY NAME

A. The materials referred to by trade name, make, or catalog number on the drawings shall be regarded as establishing a minimum standard of quality; substitutions of equal or greater quality can be made by submitting a data sheet of the proposed substituted item to the Contracting Officer, for approval.

2.2 METHODS REFERENCED IN OTHER SECTIONS

A. General methods referenced in other Division 26 sections indicate products and methods that are allowed for use during this project, including incidentals (fittings, connectors, etc).

1. Where the use of an alternative method is desired, the alternative method may be requested by submitting data sheets or description of the proposed method to the Contracting Officer, for approval, before installation. Include where the proposed product is requested for, how, and why.

2. Alternative methods may also be proposed before installation; however, these sections and contract drawings are to be regarded as establishing a minimum standard of quality where they exceed code and typical industry standards and will likely be rejected.

B. Unapproved alternative products and methods will be subject to removal and replacement with approved products and methods at the contractors’ expense.

PART 3 - EXECUTION

3.1 EXAMINATION

A. The contractor shall familiarize themselves with the project, requirements, and actual site conditions. Coordinate installation and routing with other trades.

3.2 INSTALLATION OF ELECTRICAL WORK

A. Unless more stringent requirements are specified in the Contract Documents or manufacturers' written instructions, comply with NFPA 70 and NECA NEIS 1 for

COMMON WORK RESULTS FOR ELECTRICAL 260000-4

installation of Work specified in Division 26. Consult Architect for resolution of conflicting requirements.

B. Measure indicated mounting heights to bottom of unit for suspended items and to center of unit for wall-mounting items, unless otherwise directed.

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

D. Equipment: Install to facilitate service, maintenance, and repair or replacement of components of both electrical equipment and other nearby installations. Connect in such a way as to facilitate future disconnecting with minimum interference with other items in the vicinity.

3.3 EQUIPMENT GROUNDING AND BONDING:

A. Install insulated equipment grounding conductors with proposed feeders.

B. Transformers are wired as a separately derived system. Bond created neutral to grounding electrode system.

3.4 RACEWAY AND SIMILAR PENETRATIONS (NON-FIRE RATED, NOT

SLEEVED)

A. Stick-built and Similar Interior-Wall Penetrations (Unfinished Areas): Repair wall to within 1/4-inch (6 mm).

1. Allow for a small gap to allow for expansion and contraction.

B. Aboveground, Exterior-Wall Penetrations: Seal exterior opening around the raceway or cable, using a flexible, waterproofing, joint sealant appropriate for size, depth, and color to closely match the surrounding surface. Finish interior openings, filling opening and matching the exiting surface with appropriate materials and finish quality for the space.

3.5 HANGERS AND SUPPORTS

A. Installation:

1. Comply with NECA 1 and NECA 101 for installation requirements, except as specified in this article.

2. Separate dissimilar metals and metal products from contact with wood or cementitious materials by painting each metal surface in area of contact with a bituminous coating or by other permanent separation.

3. Raceway Support Methods: In addition to methods described in NECA 1.

4. Strength of Support Assemblies: Where not indicated, select sizes of components so strength will be adequate to carry present and future static [ and seismic] loads within specified loading limits. Minimum static design load used for strength determination shall be weight of supported components plus 200 lb (90 kg).

COMMON WORK RESULTS FOR ELECTRICAL 260000-5

5. Mounting and Anchorage of Surface-Mounted Equipment and Components:

Anchor and fasten electrical items and their supports to building structural elements by the following methods, unless otherwise indicated or required by Code:

a. To Wood: Fasten with lag screws or through bolts.

b. To Light Steel: Sheet metal screws.

END OF SECTION 260000

LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 260519-1

11318 WAREHOUSE #1 ELECTRICAL

SECTION 260519 - LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Copper building wire.

2. Connectors and splices.

1.2 MEASUREMENT AND PAYMENT

A. No separate payment will be made for the work included under this section; rather payment shall be included in the items for work listed in the Schedule of Items.

PART 2 - PRODUCTS

2.1 COPPER BUILDING WIRE

A. Description: Flexible, insulated, and uninsulated, drawn copper current-carrying conductor with an overall insulation layer or jacket, or both, rated 600 V or less.

B. Standards:

1. Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and use.

C. Conductor Insulation:

1. Type THHN and Type THWN-2. Comply with UL 83.

2.2 CONNECTORS AND SPLICES

A. Description: Factory-fabricated connectors, splices, and lugs of size, ampacity rating, material, type, and class for application and service indicated; listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and use.

B. Lugs: One piece, seamless, designed to terminate conductors specified in this Section and meet installation requirements.

PART 3 - EXECUTION

3.1 CONDUCTOR MATERIAL APPLICATIONS

A. Feeders:

LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 260519-2

1. Copper; solid for No. 12 AWG and smaller; stranded for No. 8 AWG and larger.

3.2 CONDUCTOR INSULATION AND MULTICONDUCTOR CABLE APPLICATIONS

AND WIRING METHODS

A. Feeders in General: Type THHN/THWN-2, single conductors in raceway.

B. Cord Connections: Type SOOW, hard service cord with watertight strain relief connectors device at terminations to suit application.

3.3 INSTALLATION, GENERAL

A. Complete raceway installation between conductor and cable termination points in accordance with Section 260533.13 "Conduits for Electrical Systems" prior to pulling conductors and cables.

B. Use manufacturer-approved pulling compound or lubricant where necessary; compound used must not deteriorate conductor or insulation. Do not exceed manufacturer's recommended maximum pulling tensions and sidewall pressure values.

C. Use pulling means, including fish tape, cable, rope, and basket-weave wire/cable grips, that will not damage cables or raceway.

3.4 CONNECTIONS

A. Tighten electrical 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-486B.

B. Make splices, terminations, and taps that are compatible with conductor material.

C. Wiring at terminations: Install conductor at each termination, with at least 6 inch (150 mm) of slack.

3.5 IDENTIFICATION

A. Identify and color-code conductors according to Section 260553 "Identification for Electrical Systems."

END OF SECTION 260519

GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 260526-1

11318 WAREHOUSE #1 ELECTRICAL

SECTION 260526 - GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Grounding and bonding conductors.

2. Grounding and bonding clamps.

3. Grounding and bonding bushings.

4. Grounding (earthing) electrodes.

1.2 QUALITY ASSURANCE

A. Listing Criteria:

1. Grounding and Bonding Equipment: UL CCN KDER; including UL 467.

2. Grounding and Bonding Equipment for Communications: UL CCN KDSH;

including UL 467.

1.3 MEASUREMENT AND PAYMENT

A. No separate payment will be made for the work included under this section; rather payment shall be included in the items for work listed in the Schedule of Items.

PART 2 - PRODUCTS

2.1 GROUNDING AND BONDING CONDUCTORS

A. Equipment Grounding Conductor:

1. General Characteristics: 600 V, insulated, copper wire or cable, green color, in accordance with Section 260519 "Low-Voltage Electrical Power Conductors and Cables."

B. ASTM - Bare Copper Grounding and Bonding Conductor:

1. Referenced Standards: Complying with one or more of the following:

a. Soft or Annealed Copper Wire: ASTM B3.

b. Concentric-Lay Stranded Copper Conductor: ASTM B8.

c. Tin-Coated Soft or Annealed Copper Wire: ASTM B33.

2.2 GROUNDING AND BONDING CLAMPS

GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 260526-2

A. Description: Clamps suitable for attachment of grounding and bonding conductors to grounding electrodes, pipes, tubing, and rebar.

2.3 GROUNDING AND BONDING BUSHINGS

A. Description: Bonding bushings connect conduit fittings, tubing fittings, threaded metal conduit, and unthreaded metal conduit to metal boxes and equipment enclosures and have one or more bonding screws intended to provide electrical continuity between bushing and enclosure. Grounding bushings have provision for connection of bonding or grounding conductor and may or may not also have bonding screws.

2.4 GROUNDING (EARTHING) ELECTRODES

A. Rod Electrode: Copper-clad steel; 3/4 inch by 10 ft (19 mm by 3 m).

PART 3 - EXECUTION

3.1 SELECTION OF GROUNDING AND BONDING PRODUCTS

A. Grounding and Bonding Conductors:

1. Provide solid conductor for 8 AWG and smaller, and stranded conductors for 6 AWG and larger unless otherwise indicated.

B. Grounding and Bonding Connectors:

1. Connections to Ground Rods: Welded or bolted connectors.

2. Underground Splices: Welded connectors unless otherwise indicated.

3. Connections to Structural Steel: Welded or bolted connectors.

3.2 INSTALLATION OF GROUNDING AND BONDING

A. Comply with manufacturer's published instructions.

B. Special Techniques:

1. Grounding and Bonding Conductors:

a. Route along shortest and straightest paths possible unless otherwise indicated or required by Code. Avoid obstructing access or placing conductors where they may be subjected to strain, impact, or damage.

2. Grounding and Bonding Connectors: Make connections so possibility of galvanic action or electrolysis is minimized. Select connectors, connection hardware, conductors, and connection methods so metals in direct contact are galvanically compatible.

a. Use electroplated or hot-tin-coated materials to ensure high conductivity and to make contact points closer in order of galvanic series.

b. Make connections with clean, bare metal at points of contact.

GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 260526-3

c. Make aluminum-to-steel connections with stainless steel separators and mechanical clamps.

d. Make aluminum-to-galvanized-steel connections with tin-plated copper jumpers and mechanical clamps.

e. Coat and seal connections having dissimilar metals with inert material to prevent future penetration of moisture to contact surfaces.

3. Electrodes:

a. Ground Rods: Drive rods until tops are 2 inch (50 mm) below finished floor or final grade unless otherwise indicated.

1) Interconnect ground rods with grounding electrode conductor below grade and as otherwise indicated. Make connections without exposing steel or damaging coating if any.

b. For grounding electrode system, install a second rod spaced at least one-rod length from each other and located at least same distance from other grounding electrodes, and connect to service grounding electrode conductor.

4. Grounding at Service:

a. Install main bonding jumper between neutral and ground buses.

5. Grounding at Tree Coolers:

a. Ground metal frame of tree cooler to grounding electrode system which may be shared with separately and non-separately derived systems.

6. Grounding (non-)Separately Derived Systems:

a. Phase converters and transformers: Install grounding electrode(s) at locations of Phase Converters and transformers. Electrode must be connected to equipment grounding conductor and as required by the manufacturer’s installation instructions and the NEC. Bond grounded current carrying conductor when necessary, referencing manufacturers installation instructions and NEC Article 250.

7. Equipment Grounding and Bonding:

a. Install insulated equipment grounding conductors with feeders and branch circuits.

3.3 PROTECTION

A. After installation, protect grounding and bonding cables and equipment from construction activities. Remove and replace items that are contaminated, defaced, damaged, or otherwise caused to be unfit for use prior to acceptance by Owner.

END OF SECTION 260526

CONDUITS FOR ELECTRICAL SYSTEMS 260533.13-1

11318 WAREHOUSE #1 ELECTRICAL

SECTION 260533.13 - CONDUITS FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Type EMT duct raceways and elbows.

2. Type HDPE and Type EPEC duct raceways and fittings.

3. Type IMC duct raceways.

4. Type LFMC duct raceways.

5. Type PVC duct raceways and fittings.

6. Type RTRC-BG duct raceways and fittings.

7. Fittings for conduit, tubing, and cable.

8. Solvent cements.

1.2 DEFINITIONS

A. Conduit: A structure containing one or more duct raceways.

B. Duct Raceway: A single enclosed raceway for conductors or cable.

C. Duct Bank: An arrangement of conduit providing one or more continuous duct raceways between two points.

1.3 MEASUREMENT AND PAYMENT

A. No separate payment will be made for the work included under this section; rather payment shall be included in the items for work listed in the Schedule of Items.

PART 2 - PRODUCTS

2.1 TYPE EMT DUCT RACEWAYS AND ELBOWS

A. UL FJMX - Steel Electrical Metal Tubing (EMT-S) and Elbows:

1. Material: Steel. Aluminum may be used interior only.

2.2 TYPE HDPE DUCT RACEWAYS AND FITTINGS

A. UL EAZX - Schedule 40 Electrical HDPE Underground Conduit (HDPE-40).

2.3 TYPE IMC DUCT RACEWAYS

A. UL DYBY - Steel Intermediate Metal Conduit (IMC):

CONDUITS FOR ELECTRICAL SYSTEMS 260533.13-2

1. Exterior Coating: Zinc.

2.4 TYPE LFMC DUCT RACEWAYS

A. UL DXHR - Steel Liquidtight Flexible Metal Conduit (LFMC-S).

2.5 TYPE PVC DUCT RACEWAYS AND FITTINGS

A. UL DZYR - Schedule 40 Rigid PVC Conduit (PVC-40) and Fittings.

B. UL DZYR - Schedule 80 Rigid PVC Conduit (PVC-80) and Fittings:

2.6 TYPE RTRC-BG DUCT RACEWAYS AND FITTINGS

A. UL DZKT - Low-Halogen, Belowground Reinforced Thermosetting Resin Conduit (RTRC-BG) and Fittings.

2.7 FITTINGS FOR CONDUIT, TUBING, AND CABLE

A. Fittings, General: Listed and labeled for type of conduit, location, and use.

B. Fittings for Type IMC, Type PVC, Type HDPE, Type EPEC, and Type RTRC Duct Raceways: UL CCN DWTT; including UL 514B.

C. Fittings for Type EMT Duct Raceways: UL CCN FKAV; including UL 514B.

1. Wet location Coupling Method: Raintight compression coupling with distinctive color gland nut.

D. UL DXAS - Fittings for Type LFMC Duct Raceways:

1. Listing Criteria: UL CCN DXAS; including UL 514B.

2.8 SOLVENT CEMENTS

A. UL DWTT - Solvent Cements for Type PVC Duct Raceways and Fittings.

PART 3 - EXECUTION

3.1 SELECTION OF CONDUITS FOR ELECTRICAL SYSTEMS

A. Unless more stringent requirements are specified in Contract Documents or manufacturers' published instructions, comply with NFPA 70 for selection of duct raceways. Consult Contracting Officer for resolution of conflicting requirements, however, laterals and drops provided for power company shall meet all power company requirements.

B. Non-metallic raceways shall not be used above grade.

1. PVC-80 allowed for sleeving grounding electrode conductors for damage protection.

CONDUITS FOR ELECTRICAL SYSTEMS 260533.13-3

C. Outdoors:

1. Exposed and Subject to Physical Damage: IMC.

a. This includes locations:

1) Less than 1 m (3 ft) above finished grade.

2) Any power conduit penetrating grade.

3) Drops attached to overhead conductors.

2. Exposed and Not Subject to Physical Damage, Including Concealed Aboveground:

IMC, or Corrosion-resistant EMT.

3. Direct Buried: IMC.

a. After 500 mm (5 ft) beyond grade penetration and 1 m (3 ft) beyond building foundation exterior PVC, HDPE, and RTRC-BG may be substituted.

4. Connection to Vibrating Equipment (Including Transformers and Hydraulic, Pneumatic, Electric Solenoid, or Motor-Driven Equipment): LFMC.

D. Indoors:

1. Exposed and Not Subject to Physical Damage: ERMC, IMC, or EMT.

a. Includes: Ceilings of the above severe physical damage areas.

b. <Insert designations of applicable spaces or locations>.

2. Concealed in Ceilings and Interior Walls and Partitions: IMC or EMT.

E. Duct Fittings: Select fittings in accordance with NEMA FB 2.10 guidelines.

1. IMC: Provide threaded-type fittings unless otherwise indicated.

3.2 INSTALLATION OF CONDUITS FOR ELECTRICAL SYSTEMS

A. Comply with manufacturer's published instructions.

B. Special Installation Techniques:

1. General Requirements for Installation of Duct Raceways:

a. Complete duct raceway installation before starting conductor installation.

b. Support within 12 inch (300 mm) of changes in direction.

c. Make bends in duct raceway using large-radius preformed ells except for parallel bends. Field bending must be in accordance with NFPA 70 minimum radii requirements. Provide only equipment specifically designed for material and size involved.

d. Support conduit within 12 inch (300 mm) of enclosures to which attached.

e. Do not install conduits within 2 inch (50 mm) of the bottom side of a metal deck roof.

f. Cut conduit perpendicular to the length. For conduits metric designator 53

(trade size 2) and larger, use roll cutter or a guide to make cut straight and perpendicular to the length. Ream inside of conduit to remove burrs.

CONDUITS FOR ELECTRICAL SYSTEMS 260533.13-4

g. Install duct raceways square to the enclosure and terminate at enclosures without hubs with locknuts on both sides of enclosure wall. Install locknuts hand tight, plus one-quarter turn more.

1) Termination fittings with shoulders do not require two locknuts.

h. Terminate threaded conduits into threaded hubs or with locknuts on inside and outside of boxes or cabinets. Install bushings on conduits up to metric designator 35 (trade size 1-1/4) and insulated throat metal bushings on metric designator 41 (trade size 1-1/2) and larger conduits terminated with locknuts. Install insulated throat metal grounding bushings on service conduits.

2. Type LFMC:

a. Provide a maximum of 36 inch (915 mm) of flexible conduit for equipment subject to vibration, noise transmission, or movement; and for transformers and motors.

3. Types PVC, and HDPE:

a. Comply with manufacturer's published instructions for solvent welding and fittings.

3.3 INSTALLATION OF UNDERGROUND CONDUIT

A. Direct-Buried Conduit:

1. Burial depth shall be 24 inches (610 mm) to top of conduit minimum unless required in the contract documents.

2. Excavate trench bottom to provide firm and uniform support for conduit.

3. All backfill shall be free of materials that may damage the conduit system, such as construction waste, large rocks, sharp rocks, etc. Where natural backfill poses a hazard, alternate backfill material is required.

4. After installing conduit, backfill and compact. Start at tie-in point, and work toward end of conduit run, leaving conduit at end of run free to move with expansion and contraction as temperature changes during this process. Firmly hand tamp backfill around conduit to provide maximum supporting strength. After placing controlled backfill to within 12 inches (300 mm) of finished grade, make final conduit connection at end of run and complete backfilling with normal compaction.

5. Install manufactured rigid steel conduit elbows for stub-ups at poles and equipment.

See 3.1 A.3. this section, for building entrances.

6. Underground-Line Warning Tape: Install during backfilling according to Section 260553 Identification of Electrical Systems.

3.4 PROTECTION

A. Protect coatings, finishes, and cabinets from damage and deterioration.

CONDUITS FOR ELECTRICAL SYSTEMS 260533.13-5

1. Repair damage to galvanized finishes with zinc-rich paint recommended by manufacturer.

END OF SECTION 260533.13

IDENTIFICATION FOR ELECTRICAL SYSTEMS 260553-1

11318 WAREHOUSE #1 ELECTRICAL

SECTION 260553 - IDENTIFICATION FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Labels.

2. Tapes and stencils.

3. Signs.

4. Additional signage not noted on drawings.

1.2 MEASUREMENT AND PAYMENT

A. No separate payment will be made for the work included under this section; rather payment shall be included in the items for work listed in the Schedule of Items.

PART 2 - PRODUCTS

2.1 LABELS

A. UL PGDQ2 - Self-Adhesive Labels: Polyester or Vinyl, thermal, transfer-printed, 3 mil (0.08 mm) thick, multicolor, weather- and UV-resistant, pressure-sensitive adhesive labels, configured for intended use and location.

2.2 TAPES AND STENCILS

A. Self-Adhesive Vinyl Tape: Colored, heavy duty, waterproof, fade resistant; not less than 3 mil (0.08 mm) thick by 1 to 2 inch (25 to 50 mm) wide; compounded for outdoor use.

B. Underground-Line Warning Tape:

1. Tape:

a. Recommended by manufacturer for method of installation and suitable to identify and locate underground electrical utility lines.

b. Printing on tape must be permanent and may not be damaged by burial operations.

c. Tape material and ink must be chemically inert and not be subject to degradation when exposed to acids, alkalis, and other destructive substances commonly found in soils.

2. Color and Printing:

a. Comply with APWA Uniform Color Code using NEMA Z535.1 safety colors.

IDENTIFICATION FOR ELECTRICAL SYSTEMS 260553-2

b. Inscriptions for Red Tapes: "CAUTION BURIED ELECTRIC LINE

BELOW".

3. Nonconducting Line-Warning Tape:

a. Pigmented polyolefin, bright colored, continuous-printed on one side with inscription of utility, compounded for direct-burial service.

b. Width: 3 inch (75 mm).

c. Thickness: 4 mil (0.1 mm).

d. Weight: 18.5 lb/1000 sq. ft (9.0 kg/100 sq. m).

e. Tensile in accordance with ASTM D882: 30 lbf (133.4 N) and 2500 psi

(17.2 MPa).

2.3 SIGNS

A. Laminated Acrylic or Melamine Plastic Signs:

1. Engraved legend.

2. Thickness:

a. For signs up to 20 sq. inch (129 sq. cm), minimum 1/16 inch (1.6 mm) thick.

b. For signs larger than 20 sq. inch (129 sq. cm), 1/8 inch (3.2 mm) thick.

c. Engraved legend with black letters on white face unless otherwise required on drawings.

d. Punched or drilled for mechanical fasteners with 1/4-inch (6.4 mm) grommets in corners for mounting.

PART 3 - EXECUTION

3.1 PREPARATION

A. Self-Adhesive Identification Products: Before applying electrical identification products, clean substrates of substances that could impair bond, using materials and methods recommended by manufacturer of identification product.

3.2 SELECTION OF COLORS AND IDENTIFICATION MARKINGS

A. Color-Coding for Phase- and Voltage-Level Identification, 1000 V or Less: Use colors listed below for ungrounded service, feeder, and branch-circuit conductors.

1. Color must be factory applied or field applied for sizes larger than 6 AWG when permitted by authorities having jurisdiction.

2. Colors for 480Y/277 V Circuits:

a. Phase A: Brown.

b. Phase B: Orange.

c. Phase C: Yellow.

3. Color for Neutral (Grounded Conductor): White or gray.

4. Color for Equipment Ground: Green.

IDENTIFICATION FOR ELECTRICAL SYSTEMS 260553-3

B. Locations of Underground Lines: Underground-line warning tape for power and lighting.

C. Cover Plates: Label individual cover plates with self-adhesive labels. Place label at top of cover plate. Label cover plate with the following information, in the order listed:

1. Panelboard designation.

2. Colon or dash.

3. Branch circuit number.

D. Equipment Identification Labels:

1. Black letters on white field.

2. Outdoor Equipment: Melamine sign.

3. Equipment to Be Labeled:

a. Panelboards: Typewritten directory of circuits in location provided by panelboard manufacturer. Panelboard (T1 and T2 only) identification must be in form of engraved melamine label.

b. Transformers: Label similar to cover plates.

c. Phase converters: Label similar to cover plates.

d. Receptacles: Label proper ones as “Tree Cooler 1” or “Tree Cooler 2.”

3.3 SELECTION OF SIGNS AND HAZARD MARKINGS

A. Comply with 29 CFR 1910.145 for danger, caution, warning, and safety instruction signs.

B. Signs, labels, and tags required for personnel safety must comply with the following standards:

1. Safety Colors: NEMA Z535.1.

2. Facility Safety Signs: NEMA Z535.2.

3. Safety Symbols: NEMA Z535.3.

4. Product Safety Signs and Labels: NEMA Z535.4.

5. Safety Tags and Barricade Tapes for Temporary Hazards: NEMA Z535.5.

C. Electrical Hazard Warnings:

1. OSHA Workspace Clearance Warning Legend: "WARNING - OSHA

REGULATION - AREA IN FRONT OF ELECTRICAL EQUIPMENT MUST BE

KEPT CLEAR FOR 3 FEET MINIMUM."

2. Locations with higher voltage: “480 VOLT.”

D. Warning Labels for outdoor Cabinets, Boxes, and Enclosures for Power and Lighting:

Self-adhesive labels.

1. Apply to exterior of door, cover, or other access.

3.4 INSTALLATION

A. Install identification materials and devices at locations for most convenient viewing without interference with operation and maintenance of equipment. Install access doors or panels to provide view of identifying devices.

IDENTIFICATION FOR ELECTRICAL SYSTEMS 260553-4

B. Thermal Movements: Allow for thermal movements from ambient and surface temperature changes typical for electrical equipment environments specified in Section 260011 "Facility Performance Requirements for Electrical."

C. Fasteners for Labels and Signs: Self-tapping, stainless steel screws or stainless steel machine screws with nuts and flat and lock washers.

D. Verify and coordinate identification names, abbreviations, colors, and other features with requirements in other Sections requiring identification applications, Drawings, Shop Drawings, manufacturer's wiring diagrams, and operation and maintenance manual. Use consistent designations throughout Project.

E. Heat-Shrink, Preprinted Tubes: Secure tight to surface at location with high visibility and accessibility.

F. Marker Tapes: Secure tight to surface at location with high visibility and accessibility.

G. Self-Adhesive Vinyl Tape: Secure tight to surface at location with high visibility and accessibility.

1. Field-Applied, Color-Coding Conductor Tape: Apply in half-lapped turns for minimum distance of 6 inch (150 mm) where splices or taps are made. Apply last two turns of tape with no tension to prevent possible unwinding.

H. Underground Line Warning Tape:

1. During backfilling of trenches, install continuous underground-line warning tape not less than 12 inch (300 mm) directly above cables or raceways buried 18 inch (450 mm) or more below grade. Use multiple tapes where width of multiple lines installed in common trench exceeds 16 inch (400 mm) overall.

2. Install underground-line warning tape for direct-buried cables and cables in raceways.

I. Laminated Acrylic or Melamine Plastic Signs: Attach signs with mechanical fasteners appropriate to location and substrate.

END OF SECTION 260553