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SECTION 26 05 33 - RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS (continued)
<br />PART 2 - PRODUCTS
<br />2.1 METAL CONDUITS AND FITTINGS
<br />A. Metal Conduit:
<br />1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated
<br />into the Work include, but are not limited to, the following:
<br />a. AFC Cable Systems; a part of Atkore International.
<br />b. Allied Tube & Conduit; a part of Atkore International.
<br />c. Anamet Electrical, Inc.
<br />d. Electri-Flex Company.
<br />e. FSR Inc.
<br />f. NEC, Inc.
<br />g. Opti-Com Manufacturing Network, Inc (OMNI).
<br />2. Listing and Labeling: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location
<br />and application.
<br />3. GRC: Comply with ANSI C80.1 and UL 6.
<br />4. IMC: Comply with ANSI C80.6 and UL 1242.
<br />5. PVC-Coated Steel Conduit: PVC-coated.
<br />a. Comply with NEMA RN 1.
<br />b. Coating Thickness: 0.040 inch, minimum.
<br />6. EMT: Comply with ANSI C80.3 and UL 797.
<br />7. FMC: Comply with UL 1; aluminum.
<br />8. LFMC: Flexible steel conduit with PVC jacket and complying with UL 360.
<br />B. Metal Fittings:
<br />1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated
<br />into the Work include, but are not limited to, the following:
<br />a. AFC Cable Systems; a part of Atkore International.
<br />b. Allied Tube & Conduit; a part of Atkore International.
<br />c. Anamet Electrical, Inc.
<br />d. Electri-Flex Company.
<br />e. NEC, Inc.
<br />f. Opti-Com Manufacturing Network, Inc (OMNI).
<br />2. Comply with NEMA FB 1 and UL 514B.
<br />3. Listing and Labeling: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location
<br />and application.
<br />4. Fittings, General: Listed and labeled for type of conduit, location, and use.
<br />5. Conduit Fittings for Hazardous (Classified) Locations: Comply with UL 1203 and NFPA 70.
<br />6. Fittings for EMT:
<br />a. Material: Steel.
<br />b. Type: Compression.
<br />7. Expansion Fittings: PVC or steel to match conduit type, complying with UL 651, rated for environmental conditions where
<br />installed, and including flexible external bonding jumper.
<br />8. Coating for Fittings for PVC-Coated Conduit: Minimum thickness of 0.040 inch, with overlapping sleeves protecting threaded
<br />joints.
<br />C. Joint Compound for IMC, GRC, or ARC: Approved, as defined in NFPA 70, by authorities having jurisdiction for use in conduit
<br />assemblies, and compounded for use to lubricate and protect threaded conduit joints from corrosion and to enhance their conductivity.
<br />2.2 NONMETALLIC CONDUITS AND FITTINGS
<br />A. Nonmetallic Conduit:
<br />1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated
<br />into the Work include, but are not limited to, the following:
<br />a. AFC Cable Systems; a part of Atkore International.
<br />b. Anamet Electrical, Inc.
<br />c. CANTEX INC.
<br />d. Champion Fiberglass, Inc.
<br />e. Condux International, Inc.
<br />2. Listing and Labeling: Nonmetallic conduit shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and
<br />marked for intended location and application.
<br />3. Fiberglass:
<br />a. Comply with NEMA TC 14.
<br />b. Comply with UL 2515 for aboveground raceways.
<br />c. Comply with UL 2420 for belowground raceways.
<br />4. ENT: Comply with NEMA TC 13 and UL 1653.
<br />5. RNC: Type EPC-40-PVC, complying with NEMA TC 2 and UL 651 unless otherwise indicated.
<br />6. LFNC: Comply with UL 1660.
<br />B. Nonmetallic Fittings:
<br />1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated
<br />into the Work include, but are not limited to, the following:
<br />a. AFC Cable Systems; a part of Atkore International.
<br />b. CANTEX INC.
<br />c. Champion Fiberglass, Inc.
<br />d. Condux International, Inc.
<br />e. Electri-Flex Company.
<br />2. Fittings, General: Listed and labeled for type of conduit, location, and use.
<br />3. Fittings for ENT and RNC: Comply with NEMA TC 3; match to conduit or tubing type and material.
<br />a. Fittings for LFNC: Comply with UL 514B.
<br />4. Solvents and Adhesives: As recommended by conduit manufacturer.
<br />2.3 BOXES, ENCLOSURES, AND CABINETS
<br />A. Manufacturers: Subject to compliance with requirements, provide products by one of the following:
<br />1. Crouse-Hinds, an Eaton business.
<br />2. Erickson Electrical Equipment Company.
<br />3. FSR Inc.
<br />4. Hoffman; a brand of Pentair Equipment Protection.
<br />5. Hubbell Incorporated.
<br />6. Hubbell Incorporated; Wiring Device-Kellems.
<br />B. General Requirements for Boxes, Enclosures, and Cabinets: Boxes, enclosures, and cabinets installed in wet locations shall be
<br />listed for use in wet locations.
<br />C. Cast-Metal Outlet and Device Boxes: Comply with NEMA FB 1, aluminum, Type FD, with gasketed cover.
<br />D. Nonmetallic Outlet and Device Boxes: Comply with NEMA OS 2 and UL 514C.
<br />E. Metal Floor Boxes:
<br />1. Material: sheet metal.
<br />2. Type: Semi-adjustable.
<br />3. Shape: Rectangular.
<br />4. Listing and Labeling: Metal floor boxes shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and
<br />marked for intended location and application.
<br />F. Nonmetallic Floor Boxes: Nonadjustable, rectangular.
<br />1. Listing and Labeling: Nonmetallic floor boxes shall be listed and labeled as defined in NFPA 70, by a qualified testing agency,
<br />and marked for intended location and application.
<br />G. Gangable boxes are allowed.
<br />H. Hinged-Cover Enclosures: Comply with UL 50 and NEMA 250, Type 1 Type 3R with continuous-hinge cover with flush latch unless
<br />otherwise indicated.
<br />1. Metal Enclosures: Steel, finished inside and out with manufacturer's standard enamel.
<br />2. Nonmetallic Enclosures: Fiberglass.
<br />3. Interior Panels: Steel; all sides finished with manufacturer's standard enamel.
<br />2.4 HANDHOLES AND BOXES FOR EXTERIOR UNDERGROUND WIRING
<br />A. General Requirements for Handholes and Boxes:
<br />1. Boxes and handholes for use in underground systems shall be designed and identified as defined in NFPA 70, for intended
<br />location and application.
<br />2. Boxes installed in wet areas shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for
<br />intended location and application.
<br />B. Polymer-Concrete Handholes and Boxes with Polymer-Concrete Cover: Molded of sand and aggregate, bound together with
<br />polymer resin, and reinforced with steel, fiberglass, or a combination of the two.
<br />1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:
<br />a. Armorcast Products Company.
<br />b. Oldcastle Enclosure Solutions.
<br />c. Oldcastle Precast, Inc.
<br />d. Quazite: Hubbell Power Systems, Inc.
<br />2. Standard: Comply with SCTE 77.
<br />3. Configuration: Designed for flush burial with open bottom unless otherwise indicated.
<br />4. Cover: Weatherproof, secured by tamper-resistant locking devices and having structural load rating consistent with enclosure
<br />and handhole location.
<br />5. Cover Finish: Nonskid finish shall have a minimum coefficient of friction of 0.50.
<br />6. Cover Legend: Molded lettering, COORDINATE EXACT REQUIREMENTS WITH SERVING UTILITY.
<br />7. Conduit Entrance Provisions: Conduit-terminating fittings shall mate with entering ducts for secure, fixed installation in enclosure
<br />wall.
<br />8. Handholes and Larger: Have inserts for cable racks and pulling-in irons installed before concrete is poured.
<br />PART 3 - EXECUTION
<br />3.1 RACEWAY APPLICATION
<br />A. Outdoors: Apply raceway products as specified below unless otherwise indicated:
<br />1. Exposed Conduit: IMC.
<br />2. Underground Conduit: RNC, Type EPC-40-PVC Type EPC-80-PVC concrete encased.
<br />3. Connection to Vibrating Equipment (Including Transformers and Hydraulic, Pneumatic, Electric Solenoid, or Motor-Driven
<br />Equipment): LFNC.
<br />4. Boxes and Enclosures, Aboveground: NEMA 250, Type 3R.
<br />B. Indoors: Apply raceway products as specified below unless otherwise indicated:
<br />1. Exposed and Subject to Severe Physical Damage: IMC. Raceway locations include the following:
<br />a. Loading dock.
<br />b. Corridors used for traffic of mechanized carts, forklifts, and pallet-handling units.
<br />c. Mechanical rooms.
<br />2. Concealed in Ceilings and Interior Walls and Partitions: EMT, ENT.
<br />3. Connection to Vibrating Equipment (Including Transformers and Hydraulic, Pneumatic, Electric Solenoid, or Motor-Driven
<br />Equipment): FMC, except use LFMC in damp or wet locations.
<br />4. Damp or Wet Locations: PVC coated RNC.
<br />5. Boxes and Enclosures: NEMA 250, Type 1, except use NEMA 250, Type 4 stainless steel in institutional and commercial
<br />kitchens and damp or wet locations.
<br />C. Minimum Raceway Size: 3/4-inch trade size.
<br />D. Raceway Fittings: Compatible with raceways and suitable for use and location.
<br />1. Rigid and Intermediate Steel Conduit: Use threaded rigid steel conduit fittings unless otherwise indicated. Comply with
<br />NEMA FB 2.10.
<br />2. PVC Externally Coated, Rigid Steel Conduits: Use only fittings listed for use with this type of conduit. Patch and seal all joints,
<br />nicks, and scrapes in PVC coating after installing conduits and fittings. Use sealant recommended by fitting manufacturer and apply
<br />in thickness and number of coats recommended by manufacturer.
<br />3. EMT: Use setscrew or compression fittings. Comply with NEMA FB 2.10.
<br />4. Flexible Conduit: Use only fittings listed for use with flexible conduit. Comply with NEMA FB 2.20.
<br />E. Install nonferrous conduit or tubing for circuits operating above 60 Hz. Where aluminum raceways are installed for such circuits and
<br />pass through concrete, install in nonmetallic sleeve.
<br />F. Do not install aluminum conduits, boxes, or fittings in contact with concrete or earth.
<br />G. Install surface raceways only where indicated on Drawings.
<br />H. Do not install nonmetallic conduit where ambient temperature exceeds 120 deg F.
<br />3.2 INSTALLATION
<br />A. Comply with requirements in Section 260529 "Hangers and Supports for Electrical Systems" for hangers and supports.
<br />B. Comply with NECA 1 and NECA 101 for installation requirements except where requirements on Drawings or in this article are
<br />stricter. Comply with NECA 102 for aluminum conduits. Comply with NFPA 70 limitations for types of raceways allowed in specific
<br />occupancies and number of floors.
<br />C. Do not install raceways or electrical items on any "explosion-relief" walls or rotating equipment.
<br />D. Do not fasten conduits onto the bottom side of a metal deck roof.
<br />E. Keep raceways at least 6 inches away from parallel runs of flues and steam or hot-water pipes. Install horizontal raceway runs above
<br />water and steam piping.
<br />F. Complete raceway installation before starting conductor installation.
<br />G. Arrange stub-ups so curved portions of bends are not visible above finished slab.
<br />H. Install no more than the equivalent of three 90-degree bends in any conduit run except for control wiring conduits, for which fewer
<br />bends are allowed. Support within 12 inches of changes in direction.
<br />I. Make bends in raceway using large-radius preformed ells. Field bending shall be according to NFPA 70 minimum radii requirements.
<br />Use only equipment specifically designed for material and size involved.
<br />J. Conceal conduit within finished walls, ceilings, and floors unless otherwise indicated. Install conduits parallel or perpendicular to
<br />building lines.
<br />K. Support conduit within 12 inches of enclosures to which attached.
<br />L. Raceways Embedded in Slabs:
<br />1. Run conduit larger than 1-inch trade size, parallel or at right angles to main reinforcement. Where at right angles to
<br />reinforcement, place conduit close to slab support. Secure raceways to reinforcement at maximum 10-foot intervals.
<br />2. Arrange raceways to cross building expansion joints at right angles with expansion fittings.
<br />3. Arrange raceways to keep a minimum of 1 inch of concrete cover in all directions.
<br />4. Do not embed threadless fittings in concrete unless specifically approved by Architect for each specific location.
<br />5. Change from ENT to RNC, Type EPC-40-PVC, or IMC before rising above floor.
<br />M. Threaded Conduit Joints, Exposed to Wet, Damp, Corrosive, or Outdoor Conditions: Apply listed compound to threads of raceway
<br />and fittings before making up joints. Follow compound manufacturer's written instructions.
<br />N. Coat field-cut threads on PVC-coated raceway with a corrosion-preventing conductive compound prior to assembly.
<br />O. Raceway Terminations at Locations Subject to Moisture or Vibration: Use insulating bushings to protect conductors including
<br />conductors smaller than No. 4 AWG.
<br />P. Terminate threaded conduits into threaded hubs or with locknuts on inside and outside of boxes or cabinets. Install bushings on
<br />conduits up to 1-1/4-inch trade size and insulated throat metal bushings on 1-1/2-inch trade size and larger conduits terminated with
<br />locknuts. Install insulated throat metal grounding bushings on service conduits.
<br />Q. Install raceways square to the enclosure and terminate at enclosures with locknuts. Install locknuts hand tight plus 1/4 turn more.
<br />R. Do not rely on locknuts to penetrate nonconductive coatings on enclosures. Remove coatings in the locknut area prior to assembling
<br />conduit to enclosure to assure a continuous ground path.
<br />S. Cut conduit perpendicular to the length. For conduits 2-inch trade size and larger, use roll cutter or a guide to make cut straight and
<br />perpendicular to the length.
<br />T. Install pull wires in empty raceways. Use polypropylene or monofilament plastic line with not less than 200-lb tensile strength. Leave
<br />at least 12 inches of slack at each end of pull wire. Cap underground raceways designated as spare above grade alongside raceways in
<br />use.
<br />U. Surface Raceways:
<br />1. Install surface raceway with a minimum 2-inch radius control at bend points.
<br />2. Secure surface raceway with screws or other anchor-type devices at intervals not exceeding 48 inches and with no less than
<br />two supports per straight raceway section. Support surface raceway according to manufacturer's written instructions. Tape and glue
<br />are not acceptable support methods.
<br />V. Install raceway sealing fittings at accessible locations according to NFPA 70 and fill them with listed sealing compound. For
<br />concealed raceways, install each fitting in a flush steel box with a blank cover plate having a finish similar to that of adjacent plates or
<br />surfaces. Install raceway sealing fittings according to NFPA 70.
<br />W. Install devices to seal raceway interiors at accessible locations. Locate seals so no fittings or boxes are between the seal and the
<br />following changes of environments. Seal the interior of all raceways at the following points:
<br />1. Where an underground service raceway enters a building or structure.
<br />2. Conduit extending from interior to exterior of building.
<br />3. Conduit extending into pressurized zones that are automatically controlled to maintain different pressure set points.
<br />4. Where otherwise required by NFPA 70.
<br />X. Comply with manufacturer's written instructions for solvent welding RNC and fittings.
<br />Y. Expansion-Joint Fittings:
<br />1. Install in each run of aboveground RNC that is located where environmental temperature change may exceed 30 deg F and that
<br />has straight-run length that exceeds 25 feet. Install in each run of aboveground RMC and EMT conduit that is located where
<br />environmental temperature change may exceed 100 deg F and that has straight-run length that exceeds 100 feet.
<br />2. Install type and quantity of fittings that accommodate temperature change listed for each of the following locations:
<br />a. Outdoor Locations Not Exposed to Direct Sunlight: 125 deg F temperature change.
<br />b. Outdoor Locations Exposed to Direct Sunlight: 155 deg F temperature change.
<br />c. Indoor Spaces Connected with Outdoors without Physical Separation: 125 deg F temperature change.
<br />d. Attics: 135 deg F temperature change.
<br />3. Install fitting(s) that provide expansion and contraction for at least 0.00041 inch per foot of length of straight run per deg F of
<br />temperature change for PVC conduits. Install fitting(s) that provide expansion and contraction for at least 0.000078 inch per foot of
<br />length of straight run per deg F of temperature change for metal conduits.
<br />4. Install expansion fittings at all locations where conduits cross building or structure expansion joints.
<br />5. Install each expansion-joint fitting with position, mounting, and piston setting selected according to manufacturer's written
<br />instructions for conditions at specific location at time of installation. Install conduit supports to allow for expansion movement.
<br />Z. Flexible Conduit Connections: Comply with NEMA RV 3. Use a maximum of 36 inches of flexible conduit for recessed and semi
<br />recessed luminaires, equipment subject to vibration, noise transmission, or movement; and for transformers and motors.
<br />1. Use LFMC in damp or wet locations subject to severe physical damage.
<br />2. Use LFMC or LFNC in damp or wet locations not subject to severe physical damage.
<br />AA. Mount boxes at heights indicated on Drawings. If mounting heights of boxes are not individually indicated, give priority to ADA
<br />requirements. Install boxes with height measured to center of box unless otherwise indicated.
<br />BB. Recessed Boxes in Masonry Walls: Saw-cut opening for box in center of cell of masonry block, and install box flush with surface of
<br />wall. Prepare block surfaces to provide a flat surface for a raintight connection between box and cover plate or supported equipment and
<br />box.
<br />CC.Horizontally separate boxes mounted on opposite sides of walls so they are not in the same vertical channel.
<br />DD.Fasten junction and pull boxes to or support from building structure. Do not support boxes by conduits.
<br />EE. Set metal floor boxes level and flush with finished floor surface.
<br />FF. Set nonmetallic floor boxes level. Trim after installation to fit flush with finished floor surface.
<br />3.3 INSTALLATION OF UNDERGROUND CONDUIT
<br />A. Direct-Buried Conduit:
<br />1. Excavate trench bottom to provide firm and uniform support for conduit.
<br />2. After installing conduit, backfill and compact. Start at tie-in point, and work toward end of conduit run, leaving conduit at end of
<br />run free to move with expansion and contraction as temperature changes during this process. Firmly hand tamp backfill around
<br />conduit to provide maximum supporting strength. After placing controlled backfill to within 12 inches of finished grade, make final
<br />conduit connection at end of run and complete backfilling with normal compaction as specified in Section 312000 "Earth Moving."
<br />3. Install manufactured duct elbows for stub-ups at poles and equipment and at building entrances through floor unless otherwise
<br />indicated. Encase elbows for stub-up ducts throughout length of elbow.
<br />4. Install manufactured rigid steel conduit elbows for stub-ups at poles and equipment and at building entrances through floor.
<br />a. Couple steel conduits to ducts with adapters designed for this purpose, and encase coupling with 3 inches of concrete for a
<br />minimum of 12 inches on each side of the coupling.
<br />b. For stub-ups at equipment mounted on outdoor concrete bases and where conduits penetrate building foundations, extend
<br />steel conduit horizontally a minimum of 60 inches from edge of foundation or equipment base. Install insulated grounding
<br />bushings on terminations at equipment.
<br />5. Warning Planks: Bury warning planks approximately 12 inches above direct-buried conduits but a minimum of 6 inches below
<br />grade. Align planks along centerline of conduit.
<br />3.4 INSTALLATION OF UNDERGROUND HANDHOLES AND BOXES
<br />A. Install handholes and boxes level and plumb and with orientation and depth coordinated with connecting conduits to minimize bends
<br />and deflections required for proper entrances.
<br />B. Unless otherwise indicated, support units on a level bed of crushed stone or gravel, graded from 1/2-inch sieve to No. 4 sieve and
<br />compacted to same density as adjacent undisturbed earth.
<br />C. Elevation: In paved areas, set so cover surface will be flush with finished grade. Set covers of other enclosures 1 inch above finished
<br />grade.
<br />D. Install handholes with bottom below frost line, below grade.
<br />E. Install removable hardware, including pulling eyes, cable stanchions, cable arms, and insulators, as required for installation and
<br />support of cables and conductors and as indicated. Select arm lengths to be long enough to provide spare space for future cables but
<br />short enough to preserve adequate working clearances in enclosure.
<br />F. Field-cut openings for conduits according to enclosure manufacturer's written instructions. Cut wall of enclosure with a tool designed
<br />for material to be cut. Size holes for terminating fittings to be used, and seal around penetrations after fittings are installed.
<br />3.5 SLEEVE AND SLEEVE-SEAL INSTALLATION FOR ELECTRICAL PENETRATIONS
<br />A. Install sleeves and sleeve seals at penetrations of exterior floor and wall assemblies. Comply with requirements in Section 260544
<br />"Sleeves and Sleeve Seals for Electrical Raceways and Cabling."
<br />3.6 FIRESTOPPING
<br />A. Install firestopping at penetrations of fire-rated floor and wall assemblies. Comply with requirements in Section 078413 "Penetration
<br />Firestopping."
<br />3.7 PROTECTION
<br />A. Protect coatings, finishes, and cabinets from damage and deterioration.
<br />1. Repair damage to galvanized finishes with zinc-rich paint recommended by manufacturer.
<br />2. Repair damage to PVC coatings or paint finishes with matching touchup coating recommended by manufacturer.
<br />END OF SECTION 26 05 33
<br />SECTION 26 05 43 - UNDERGROUND DUCTS AND RACEWAYS FOR ELECTRICAL SYSTEMS
<br />PART 1 - GENERAL
<br />1.1 SUMMARY
<br />A. Section Includes:
<br />1. Manholes for exterior underground wiring.
<br />1.2 ACTION SUBMITTALS
<br />A. Shop Drawings:
<br />1. Precast or Factory-Fabricated Concrete Structures:
<br />a. Include plans, elevations, sections, and details, including attachments to other Work.
<br />b. Include duct entry provisions, including locations and duct sizes, and methods and materials for waterproofing duct
<br />entry locations.
<br />c. Include reinforcement details.
<br />d. Include frame and cover design and manhole chimneys.
<br />e. Include grounding details.
<br />B. Field Quality-Control Submittals:
<br />1. Field quality-control reports.
<br />1.3 INFORMATIONAL SUBMITTALS
<br />A. Certificates:
<br />1. For concrete and steel used in precast concrete manholes, as required by ASTM C858.
<br />B. Manufacturers' Published Instructions: Record copy of official installation and testing instructions issued to Installer by manufacturer.
<br />PART 2 - PRODUCTS
<br />2.1 MANHOLES FOR EXTERIOR UNDERGROUND WIRING
<br />A. Performance Criteria:
<br />1. Regulatory Requirements: Listed and labeled in accordance with NFPA 70 and marked for intended location and use.
<br />2. General Characteristics:
<br />a. ASTM C858 for design and manufacturing processes.
<br />b. SCTE 77.
<br />B. Precast Concrete Manholes:
<br />1. Description: One-piece units and units with interlocking mating sections, complete with accessories, hardware, and features.
<br />2. Knockout Panels: Precast openings in walls, arranged to match dimensions and elevations of approaching duct, plus additional
<br />12 inch (300 mm) vertically and horizontally to accommodate alignment variations.
<br />3. Duct Entrances in Manhole Walls: Cast end-bell or duct-terminating fitting in wall for each entering duct.
<br />4. Ground Rod Sleeve: Provide 3 inch (75 mm) PVC sleeve in manhole floors 2 inch (50 mm) from wall adjacent to, but not
<br />underneath, duct entering structure.
<br />5. Joint Sealant: Asphaltic-butyl material with adhesion, cohesion, flexibility, and durability properties necessary to withstand
<br />maximum hydrostatic pressures at installation location with ground-water level at grade.
<br />6. Source Quality Control: Test and inspect in accordance with ASTM C1037.
<br />C. Cast-in-Place Concrete Manholes:
<br />1. Description: Underground utility structures, constructed in place, complete with accessories, hardware, and features. Include
<br />concrete knockout panels for duct entrance and sleeve for ground rod.
<br />PART 3 - EXECUTION
<br />3.1 PREPARATION
<br />A. Coordinate layout and installation of duct, duct bank, manholes, handholes, and boxes with final arrangement of other utilities, site
<br />grading, and surface features as determined in field. Notify owner if there is conflict between areas of excavation and existing
<br />structures or archaeological sites to remain.
<br />B. Coordinate elevations of duct and duct-bank entrances into manholes, handholes, and boxes with final locations and profiles of
<br />duct and duct banks, as determined by coordination with other utilities, underground obstructions, and surface features. Revise
<br />locations and elevations as required to suit field conditions and to ensure that duct and duct bank will drain to manholes and
<br />handholes, and as approved by owner.
<br />3.2 SELECTION OF UNDERGROUND ENCLOSURES
<br />A. Manholes: Precast or cast-in-place concrete.
<br />1. Units Located in Roadways and Other Deliberate Traffic Paths by Heavy or Medium Vehicles: H-20 structural load rating in
<br />accordance with AASHTO HB 17.
<br />2. Units Not Located in Deliberate Traffic Paths by Heavy or Medium Vehicles: H-10 load rating in accordance with
<br />AASHTO HB 17.
<br />3.3 INSTALLATION OF CONCRETE MANHOLES, HANDHOLES, AND BOXES
<br />A. Special Techniques:
<br />1. Cast-in-Place Manholes:
<br />a. Finish interior surfaces with smooth-troweled finish.
<br />b. Knockouts for Future Duct Connections: Form and pour concrete knockout panels 1-1/2 to 2 inch (38 to 50 mm) thick,
<br />arranged as indicated.
<br />c. Comply with requirements in Division 03, "Cast-in-Place Concrete" for cast-in-place concrete, formwork, and
<br />reinforcement.
<br />2. Precast Concrete Handholes and Manholes:
<br />a. Install units level and plumb and with orientation and depth coordinated with connecting duct to minimize bends and
<br />deflections required for proper entrances.
<br />b. Unless otherwise indicated, support units on level bed of crushed stone or gravel graded from 1 inch (25 mm) sieve
<br />to No. 4 (4.75 mm) sieve and compacted to same density as adjacent undisturbed earth.
<br />c. Field-cut openings for conduits in accordance with enclosure manufacturer's published instructions. Cut wall of
<br />enclosure with tool designed for material to be cut. Size holes for terminating fittings to be used, and seal around
<br />penetrations after fittings are installed.
<br />3. Elevations:
<br />a. Manhole Roof: Install with rooftop at least 15 inch (375 mm) below finished grade.
<br />b. Manhole Frame: In paved areas and trafficways, set frames flush with finished grade. Set other manhole frames
<br />1 inch (25 mm) above finished grade.
<br />c. Install handholes with bottom below frost line, below grade.
<br />d. Handhole Covers: In paved areas and trafficways, set surface flush with finished grade. Set covers of other
<br />handholes 1 inch (25 mm) above finished grade.
<br />e. Where indicated, cast handhole cover frame integrally with handhole structure.
<br />4. Drainage: Install drains in bottom of manholes where indicated. Coordinate with drainage provisions indicated.
<br />5. Manhole Access: Circular opening in manhole roof; sized to match cover size.
<br />a. Manholes with Fixed Ladders: Offset access opening from manhole centerlines to align with ladder.
<br />b. Install chimney, constructed of precast concrete collars and rings, and cast-iron frame to connect cover with manhole
<br />roof opening. Provide moisture-tight joints and waterproof grouting for frame and chimney.
<br />6. Waterproofing: Apply waterproofing to exterior surfaces of manholes after concrete has cured at least three days. After duct
<br />has been connected and grouted, and before backfilling, waterproof joints and connections, and touch up abrasions and scars.
<br />Waterproof exterior of manhole chimneys after mortar has cured at least three days.
<br />7. Dampproofing: Apply dampproofing to exterior surfaces of manholes after concrete has cured at least three days.
<br />Dampproofing materials and installation are specified in Division 07, "Bituminous Dampproofing." After ducts are connected and
<br />grouted, and before backfilling, dampproof joints and connections, and touch up abrasions and scars. Dampproof exterior of
<br />manhole chimneys after mortar has cured at least three days.
<br />8. Fixed Manhole Ladders: Arrange to provide for safe entry with maximum clearance from cables and other items in manholes.
<br />9. Field-Installed Bolting Anchors in Manholes and Concrete Handholes: Do not drill deeper than 3-7/8 inch (97 mm) for
<br />manholes and 2 inch (50 mm) for handholes, for anchor bolts installed in field. Use minimum of two anchors for each cable
<br />stanchion.
<br />10. Ground manholes, handholes, and boxes in accordance with Division 26, "Grounding and Bonding for Electrical Systems."
<br />3.4 FIELD QUALITY CONTROL
<br />A. Tests and Inspections:
<br />1. Demonstrate capability and compliance with requirements on completion of installation of underground duct, duct bank, and
<br />utility structures.
<br />2. Pull solid aluminum or wood test mandrel through duct to prove joint integrity and adequate bend radii, and test for out-of-
<br />round duct. Provide minimum 12 inch (300 mm) long mandrel equal to duct size minus 1/4 inch (6 mm). If obstructions are
<br />indicated, remove obstructions and retest.
<br />3. Test manhole grounding to ensure electrical continuity of grounding and bonding connections. Measure and report ground
<br />resistance as specified in Division 26, "Grounding and Bonding for Electrical Systems."
<br />B. Assemble and submit test and inspection reports.
<br />C. Manufacturer Services:
<br />1. Engage factory-authorized service representative to supervise field tests and inspections.
<br />END OF SECTION 26 05 43
<br />SECTION 26 05 53 - IDENTIFICATION FOR ELECTRICAL SYSTEMS
<br />PART 1 - GENERAL
<br />1.1 RELATED DOCUMENTS
<br />A. Drawings and general provisions of the Contract, including General and Supplementary Conditions, apply to this Section.
<br />1.2 SUMMARY
<br />A. Section Includes:
<br />1. Color and legend requirements for raceways, conductors, and warning labels and signs.
<br />2. Labels.
<br />1.3 ACTION SUBMITTALS
<br />PART 2 - PRODUCTS
<br />2.1 PERFORMANCE REQUIREMENTS
<br />A. Comply with ASME A13.1 and IEEE C2.
<br />B. Comply with NFPA 70.
<br />C. Comply with 29 CFR 1910.144 and 29 CFR 1910.145.
<br />D. Comply with ANSI Z535.4 for safety signs and labels.
<br />E. Comply with NFPA 70E and Section 260573.19 "Arc-Flash Hazard Analysis" requirements for arc-flash warning labels.
<br />F. Adhesive-attached labeling materials, including label stocks, laminating adhesives, and inks used by label printers, shall comply
<br />with UL 969.
<br />G. Thermal Movements: Allow for thermal movements from ambient and surface temperature changes.
<br />1. Temperature Change: 120 deg F, ambient; 180 deg F, material surfaces.
<br />2.2 COLOR AND LEGEND REQUIREMENTS
<br />A. Color-Coding for Phase- and Voltage-Level Identification, 600 V or Less: Use colors listed below for ungrounded service feeder
<br />and branch-circuit conductors.
<br />1. Color shall be factory applied or field applied for sizes larger than No. 8 AWG if authorities having jurisdiction permit.
<br />2. Colors for 208/120-V Circuits:
<br />a. Phase A: Red.
<br />b. Phase B: Black.
<br />c. Phase C: Blue.
<br />3. Color for Neutral: White.
<br />4. Color for Equipment Grounds: Green.
<br />5. Colors for Isolated Grounds: Green with white stripe.
<br />B. Warning Label Colors:
<br />1. Identify system voltage with black letters on an orange background.
<br />C. Warning labels and signs shall include, but are not limited to, the following legends:
<br />1. Multiple Power Source Warning: "DANGER - ELECTRICAL SHOCK HAZARD - EQUIPMENT HAS MULTIPLE POWER
<br />SOURCES."
<br />2. Workspace Clearance Warning: "WARNING - OSHA REGULATION - AREA IN FRONT OF ELECTRICAL EQUIPMENT
<br />MUST BE KEPT CLEAR FOR 36 INCHES."
<br />D. Equipment Identification Labels:
<br />1. Nameplates: White letters on a black field. Labels are to be phenolic type and shall be attached via rivet or screw.
<br />2. Letter Size
<br />a. Use 1/4 inch letter for identifying individual voltage and source.
<br />b. Use 1/2 inch letter for identifying equipment designation.
<br />c. Use 1/4 inch letter for identifying individual circuit breakers, witches and motor starters in panelboards, switchboards,
<br />adjustable speed drivers, motor control centers, EV chargers, starters and disconnects. Identify circuit and load served,
<br />including location.
<br />E. Vinyl Wraparound Labels: Preprinted, flexible labels laminated with a clear, weather- and chemical-resistant coating and matching
<br />wraparound clear adhesive tape for securing label ends.
<br />1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated
<br />into the Work include, but are not limited to, the following:
<br />a. Brady Corporation.
<br />b. Champion America.
<br />c. Panduit Corp.
<br />d. Seton Identification Products.
<br />2.3 MISCELLANEOUS IDENTIFICATION PRODUCTS
<br />PART 3 - EXECUTION
<br />3.1 PREPARATION
<br />A. Self-Adhesive Identification Products: Before applying electrical identification products, clean substrates of substances that could
<br />impair bond, using materials and methods recommended by manufacturer of identification product.
<br />3.2 INSTALLATION
<br />A. Verify and coordinate identification names, abbreviations, colors, and other features with requirements in other Sections requiring
<br />identification applications, Drawings, Shop Drawings, manufacturer's wiring diagrams, and operation and maintenance manual. Use
<br />consistent designations throughout Project.
<br />B. Install identifying devices before installing acoustical ceilings and similar concealment.
<br />C. Verify identity of each item before installing identification products.
<br />D. Coordinate identification with Project Drawings, manufacturer's wiring diagrams, and operation and maintenance manual.
<br />E. Apply identification devices to surfaces that require finish after completing finish work.
<br />F. Install signs with approved legend to facilitate proper identification, operation, and maintenance of electrical systems and
<br />connected items.
<br />G. Emergency Operating Instruction Signs: Install instruction signs with white legend on a red background with minimum 3/8-inch-
<br />high letters for emergency instructions at equipment used for power transfer.
<br />H. Elevated Components: Increase sizes of labels, signs, and letters to those appropriate for viewing from the floor.
<br />I. Vinyl Wraparound Labels:
<br />1. Secure tight to surface of raceway or cable at a location with high visibility and accessibility.
<br />2. Attach labels that are not self-adhesive type with clear vinyl tape, with adhesive appropriate to the location and substrate.
<br />J. Marker Tapes: Secure tight to surface at a location with high visibility and accessibility.
<br />K. Self-Adhesive Vinyl Tape: Secure tight to surface at a location with high visibility and accessibility.
<br />1. Field-Applied, Color-Coding Conductor Tape: Apply in half-lapped turns for a minimum distance of 6 inches where splices or
<br />taps are made. Apply last two turns of tape with no tension to prevent possible unwinding.
<br />L. Tape and Stencil: Comply with requirements in painting Sections for surface preparation and paint application.
<br />M. Floor Marking Tape: Apply stripes to finished surfaces following manufacturer's written instructions.
<br />N. Underground Line Warning Tape:
<br />1. During backfilling of trenches, install continuous underground-line warning tape directly above cable or raceway at 6 to 8
<br />inches below finished grade. Use multiple tapes where width of multiple lines installed in a common trench exceeds 16 inches
<br />overall.
<br />2. Limit use of underground-line warning tape to direct-buried cables.
<br />3.3 IDENTIFICATION SCHEDULE
<br />A. Install identification materials and devices at locations for most convenient viewing without interference with operation and
<br />maintenance of equipment. Install access doors or panels to provide view of identifying devices.
<br />B. Identify conductors, cables, and terminals in enclosures and at junctions, terminals, pull points, and locations of high visibility.
<br />Identify by system and circuit designation.
<br />C. Power-Circuit Conductor Identification, 600 V or Less: For conductors in vaults, pull and junction boxes, manholes, and handholes,
<br />use vinyl wraparound labels self-adhesive wraparound labels self-adhesive vinyl tape to identify the phase.
<br />1. Locate identification at changes in direction, at penetrations of walls and floors, at 50-foot maximum intervals in straight runs,
<br />and at 25-foot maximum intervals in congested areas.
<br />D. Control-Circuit Conductor Termination Identification: For identification at terminations, provide with the conductor designation.
<br />E. Warning Labels for Indoor Cabinets, Boxes, and Enclosures for Power and Lighting:
<br />1. Apply to exterior of door, cover, or other access.
<br />2. For equipment with multiple power or control sources, apply to door or cover of equipment, including, but not limited to, the
<br />following:
<br />a. Power-transfer switches.
<br />b. Controls with external control power connections.
<br />F. Arc Flash Warning Labeling: Self-adhesive labels.
<br />G. Emergency Operating Instruction Signs: Baked-enamel warning signs with white legend on a red background with minimum 3/8-
<br />inch- high letters for emergency instructions at equipment used for power transfer.
<br />H. Equipment Identification Labels:
<br />1. Indoor Equipment: Labels are to be phenolic type and shall be attached via rivet or screw.
<br />2. Outdoor Equipment: Labels are to be phenolic type and shall be attached via rivet or screw.
<br />3. Equipment to Be Labeled:
<br />a. Panelboards: Panelboard manufacturer to provide a directory of circuits in the location, typewritten on card stock.
<br />Panelboard identification shall be in the form of a self-adhesive, engraved, laminated acrylic or melamine label.
<br />b. Switchgear.
<br />c. Switchboards.
<br />d. Transformers: Label that includes tag designation indicated on Drawings for the transformer, feeder, and panelboards or
<br />equipment supplied by the secondary.
<br />e. Emergency system boxes and enclosures.
<br />f. Power-transfer equipment.
<br />g. Battery-inverter units.
<br />h. Power-generating units.
<br />i. EV chargers.
<br />END OF SECTION 26 05 53
<br />SECTION 26 05 73 - POWER SYSTEM STUDIES
<br />PART 1 - GENERAL
<br />1.1 SUMMARY
<br />A. Section includes short circuit and protective dev ice coordination study encompassing portions of electrical distribution system from
<br />normal power source or sources up to and including disconnect means in service entrance switchboard, disconnect means in sub-
<br />distribution panels, and main breaker in each panelboard.
<br />1.2 REFERENCES
<br />A. Institute of Electrical and Electronics Engineers:
<br />1. IEEE 242 - Recommended Practice for Protection and Coordination of Industrial and Commercial Power Systems (Buff Book).
<br />B. NFPA:
<br />1. NFPA 70 - National Electrical Code.
<br />1.3 DESIGN REQUIREMENTS
<br />Use this Article carefully; restrict statements to identify items for inclusion in study.
<br />A. Complete Short Circuit and Protective Device Coordination Study to meet requirements of NFPA 70.
<br />B. Report Preparation:
<br />1. Prepare study prior to ordering distribution equipment to verify equipment ratings required.
<br />2. Perform study with aid of computer software program.
<br />3. Obtain actual settings for equipment incorporated into Work.
<br />4. Calculate short circuit interrupting and, when applicable, momentary duties for assumed three-phase bolted fault short circuit
<br />current and phase to ground fault short circuit current at each of the following:
<br />a. Utility supply bus.
<br />b. Medium voltage air interrupter switchgear.
<br />c. Medium voltage circuit breaker switchgear.
<br />d. Secondary unit substations.
<br />e. Transfer switches.
<br />f. Low-voltage switchgear.
<br />g. Switchboards.
<br />h. Motor control centers.
<br />i. Distribution panelboards.
<br />j. Branch circuit panelboards.
<br />k. Busway.
<br />l. Each other significant equipment location throughout system.
<br />C. Report Contents:
<br />1. Include the following:
<br />a. Calculation methods and assumptions.
<br />b. Base per unit value selected.
<br />c. One-line diagram.
<br />d. Source impedance data including power company system available power and characteristics.
<br />e. Typical calculations.
<br />1) Fault impedance.
<br />2) X to R ratios.
<br />3) Asymmetry factors.
<br />4) Motor fault contribution.
<br />5) Short circuit kVA.
<br />6) Symmetrical and asymmetrical phase-to-phase and phase-to-ground fault currents.
<br />7) Tabulations of calculation quantities and results.
<br />f. One-line diagram revised by adding actual instantaneous short circuits available.
<br />g. State conclusions and recommendations.
<br />2. Prepare time-current device coordination curves graphically indicating coordination proposed for system, centered on
<br />conventional, full-size, log-log forms.
<br />3. Prepare with each time-curve sheet complete title and one-line diagram with legend identifying specific portion of system
<br />covered by that particular curve sheet.
<br />4. Prepare detailed description of each protective device identifying its type, function, manufacturer, and time-current
<br />characteristics. Tabulate recommended device tap, time dial, pickup, instantaneous, and time delay settings.
<br />5. Plot device characteristic curves at point reflecting maximum symmetrical fault current to which device is exposed. Include on
<br />curve sheets the following:
<br />a. Power company relay characteristics.
<br />b. Power company fuse characteristics.
<br />c. Medium voltage equipment protective relay characteristics.
<br />d. Medium voltage equipment protective fuse characteristics.
<br />e. Low voltage equipment circuit breaker trip device characteristics.
<br />f. Low voltage equipment fuse characteristics.
<br />g. Cable damage point characteristics.
<br />h. Pertinent transformer characteristics including:
<br />1) Transformer full load current.
<br />2) Transformer magnetizing inrush.
<br />3) ANSI transformer withstand parameters.
<br />4) Significant symmetrical fault current.
<br />i. Pertinent motor characteristics.
<br />j. Generator characteristics including:
<br />1) Phase and ground coordination of generator protective devices.
<br />2) Decrement curve and damage curve.
<br />3) Operating characteristic of protective devices.
<br />4) Actual impedance value.
<br />5) Time constants.
<br />6) Current boost data.
<br />k. Transfer switch characteristics.
<br />l. Other system load protective device characteristics.
<br />1.4 SUBMITTALS
<br />A. Qualifications Data: Submit the following for review prior to starting study.
<br />1. Submit qualifications and background of the firm.
<br />2. Submit qualifications of a professional engineer performing study.
<br />B. Software: Submit for review information on software proposed for use in study.
<br />C. Product Data: Submit the following:
<br />1. Report: Summarize results of study in report format including the following:
<br />a. Descriptions, purpose, basis, and scope of study.
<br />b. Tabulations of circuit breaker, fuse and other protective device ratings versus calculated short-circuit duties, and
<br />commentary regarding same.
<br />c. Protective device time versus current coordination curves, tabulations of relay and circuit breaker trip settings, fuse
<br />selection, and commentary regarding same.
<br />d. Fault current calculations including definition of terms and guide for interpretation of computer printout.
<br />D. Submit copies of final report signed by a professional engineer. Make additions or changes required by review comments.
<br />1.5 QUALITY ASSURANCE
<br />Include the following Paragraph only when cost of acquiring specified standards is justified.
<br />A. Maintain one copy of each document on site.
<br />B. Use commercially available software, designed specifically for short circuit and protective device coordination studies with minimum of
<br />five years' documented availability approved by Engineer.
<br />C. Perform study in accordance with IEEE 242.
<br />1.6 QUALIFICATIONS
<br />A. Perform study under direct supervision of professional engineer experienced in design of this Work and licensed in State of California
<br />with minimum of five years' experience in power system analysis.
<br />B. Demonstrate company performing study has capability and experience to provide assistance during system start up.
<br />1.7 SEQUENCING
<br />A. Submit short circuit and protective device coordination study to Engineer prior to receiving final approval of distribution equipment shop
<br />drawings and prior to releasing equipment for manufacturing.
<br />B. When formal completion of study will cause delay in equipment manufacturing, obtain approval from Engineer for preliminary submittal of
<br />study data sufficient in scope to ensure selection of device ratings and characteristics will be satisfactory.
<br />1.8 SCHEDULING
<br />A. Schedule Work to expedite collection of data to ensure completion of study for final approval of distribution equipment shop drawings
<br />prior to release of equipment for manufacturing.
<br />1.9 COORDINATION
<br />A. Coordinate Work with local power company.
<br />PART 2 - PRODUCTS
<br />2.1 Not used.
<br />PART 3 - EXECUTION
<br />3.1 FIELD QUALITY CONTROL
<br />A. Provide assistance to electrical distribution system equipment manufacturer during start up of electrical system and equipment.
<br />B. Select each primary protective device for delta-wye connected transformer so device's characteristic or operating band is within
<br />transformer characteristics, including point equal to 58 percent of ANSI withstand point to provide secondary line-to-ground fault protection.
<br />C. Separate transformer primary protective device characteristic curves from associated secondary device characteristics by 16 percent
<br />current margin to provide proper coordination and protection in event of secondary line-to-line faults.
<br />D. Separate medium-voltage relay characteristic curves from curves for other devices by at least 0.4 second time margin.
<br />3.2 ADJUSTING
<br />A. Perform field adjustments of protective devices and modifications to equipment to place equipment in final operating condition. Adjust
<br />settings in accordance with approved short circuit and protective device coordination study.
<br />END OF SECTION 26 05 73
<br />448 South Hill Street
<br />Suite 1001
<br />Los Angeles, CA 90013
<br />Phone: 310-975-2061
<br />Reviewed By:Proj #:
<br />140 Newport Center Drive,
<br />Suite 100
<br />Newport Beach, CA 92660
<br />O: 949.478.8800
<br />www.kpff.com
<br />KPFF
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<br />EV9.02
<br />SPECIFICATIONS -
<br />ELECTRICAL
<br />DLX8_EVSG
<br />515 E Dyer Rd, Santa Ana, CA 92707
<br />Owner
<br />NM23.0003320.000
<br />1416 NW 46TH Street
<br />Suite 105-138
<br />Seattle, WA 98107
<br />WWW.NELSONWORLDWIDE.COM
<br />Phone: (206) 408-8501
<br />Nelco Architecture, Inc.
<br />Issue: No: Date:
<br />CD 30 2023/11/03
<br />CD 50 2024/05/22
<br />CD 90 2025/03/07
<br />Issue for Permit 2025/04/17
<br />2025/04/17
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