152_159_26 27 29.pdf

P-447 DD4 & Pier 3 Moderinization 204820999

SECTION 26 27 29

MARINA ELECTRICAL WORK

04/06

PART 1 GENERAL

1.1 REFERENCES

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

ASTM INTERNATIONAL (ASTM)

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

ASTM B8 (2011; R 2017) Standard Specification for Concentric-Lay-Stranded Copper Conductors, Hard, Medium-Hard, or Soft

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

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

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2017; ERTA 1-2 2017; TIA 17-1; TIA 17-2;

TIA 17-3; TIA 17-4; TIA 17-5; TIA 17-6;

TIA 17-7; TIA 17-8; TIA 17-9; TIA 17-10;

TIA 17-11; TIA 17-12; TIA 17-13; TIA

17-14; TIA 17-15; TIA 17-16; TIA 17-17 )

National Electrical Code

NFPA 303 (2016) Fire Protection Standards for Marinas and Boatyards

UNDERWRITERS LABORATORIES (UL)

UL 2515 (2014) UL Standard for Safety Aboveground Reinforced Thermosetting Resin Conduit (RTRC) and Fittings

UL 2515A (2016) UL Standard for Safety Supplemental Requirements for Extra Heavy Wall Reinforced Thermosetting Resin Conduit (RTRC) and Fittings

UL 50 (2015) UL Standard for Safety Enclosures for Electrical Equipment, Non-Environmental Considerations

UL 83 (2017) UL Standard for Safety Thermoplastic-Insulated Wires and Cables

UL 467 (2013; Reprint Jun 2017) UL Standard for

SECTION 26 27 29 Page 1 chmoore Typewriter

PPI#041, 047, 048, 052, 085

135, 152, 183 kmdavis Rectangle

Safety Grounding and Bonding Equipment

UL 486A-486B (2018) UL Standard for Safety Wire Connectors

UL 510 (2017) UL Standard for Safety Polyvinyl Chloride, Polyethylene and Rubber Insulating Tape

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

UL 651 (2011; Reprint Nov 2018) UL Standard for Safety Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings

UL 1569 (2018) UL Standard for Safety Metal-Clad Cables

1.2 RELATED REQUIREMENTS

Section 26 00 00.00 20 BASIC ELECTRICAL MATERIALS AND METHODS, applies to this section with additions and modifications specified herein.

1.3 SUBMITTALS

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

submittals not having a "G" designation are for Contractor Quality Control approval. Submit the following in accordance with Section 01 33 00

SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Under-pier conduit installation

SD-03 Product Data

Conduit and fittings (each type)

Grounding and bonding equipmentWires and cables

Splice and termination components

Cabinets, junction boxes, and pull boxes

Mounting straps

Conduit support

SD-06 Test Reports

600-volt wiring test; G

1.4 QUALITY ASSURANCE

1.4.1 Grounding System Tests

Submittal shall include written results of each test and indicate location of rods as well as resistance and soil conditions at the time measurements

SECTION 26 27 29 Page 2 were made.

1.4.2 Under-pier Conduit Installation Shop Drawings

Shop Drawings: Provide shop drawings for all under-pier conduit installation equipment including all pullbox sizes and locations, conduits, and supports for pullboxes and conduits. For seismic-restraint details and conduit support details, comply with performance requirements and design criteria, and include analysis data signed and sealed by the qualified professional engineer responsible for their preparation.

a. Provide design of support, attachment and deismic resraint for the following:

1. Attachments into concrete that utilize nonexpanding insets, power actuated fasteners or cast iron embedments.

2. Conduits greater than 2 1/2 inches diameter with importance factor of 1.5.

3. Trapeze conduit racks with importance factor of 1.5 where weight of supported assembly exceeds 10 lbs/ft.

4. Under-pier mounted pull boxes.

b. Design Calculations: Calculate static and dynamic loading due to equipment weight and operation, seismic forces required to select seismic restraints.

1. Coordinate design calculations with wind-load calculations required for equipment mounted outdoors. Comply with requirements in other Division 26 Sections for equipment mounted outdoors.

2. Indicate materials and dimensions and identify hardware, including attachment and anchorage devices.

c. Seismic-Restraint Details: Provide details of field fabricated supports.

1. Design Analysis: To support selection and arrangement of seismic restraints. Include calculations of combined tensile and shear loads.

2. Details: Indicate fabrication and arrangement. Detail attachments of restraints to the restrained items and to the structure. Show attachment locations, methods, and spacing. Identify components, list their strengths, and indicate directions and values of forces transmitted to the structure during seismic events. Indicate association with vibration isolation devices.

PART 2 PRODUCTS

2.1 MATERIALS AND EQUIPMENT

Materials, equipment, and devices shall, as a minimum, meet requirements of UL where UL standards are established for those items, and requirements of NFPA 70 and NFPA 303.

SECTION 26 27 29 Page 3

2.2 CONDUIT AND FITTINGS

Rigid non-metallic conduit conforming to the following:

2.2.1 Rigid Nonmetallic Conduit

PVC Type EPC-80 in accordance with NEMA TC 2 if needed elsewhere, or reinforced thermosettig resin conduit in accordance with UL 2515 as modified by UL 2515A.

Reinforced Thermosetting Resin Conduit(RTRC): Extra heavy wall conduit as follows:

a. Minimum wall thickness shall be 0.25 inches

b. Color shall be black.

2.2.2 Fittings for Metal Conduit and Flexible Metal Conduit

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

2.2.2.1 Fittings for Rigid Metal Conduit and IMC

Threaded type. Split couplings unacceptable.

2.2.3 Fittings for Rigid Nonmetallic Conduit

UL 514B, UL 651 and UL 2515 except as modified by UL 2515A.

2.2.4 Expansion Joints

Provide conduit expansion joints having 6 inch expansion at each expansion joint in the pier and in each conduit run exceeding 250 feet. Provide expansion joints having 2 inch expansion in each conduit run of less than 250 feet.

2.3 CABINETS, JUNCTION BOXES, AND PULL BOXES

Volume greater than 200 cubic inches, UL 50, NEMA 4X nonmetallic or type 316L stainless steel.

2.4 WIRES AND CABLES

Shall meet applicable requirements of NFPA 70 and UL for type of insulation, jacket, and conductor specified or indicated. Do not provide wires and cables manufactured more than 12 months prior to date of delivery to site.

2.4.1 Conductors

No. 8 AWG and larger diameter shall be stranded; No. 10 AWG and smaller shall be solid, except that conductors for remote control, alarm, and signal circuits, Classes 1, 2, and 3, shall be stranded. Conductors shall be copper. Conductor sizes and ampacities shown are based on copper.

2.4.1.1 Minimum Conductor Sizes

Minimum size for branch circuits shall be No. 12 AWG; for Class 1

SECTION 26 27 29 Page 4 remote-control and signal circuits, No. 14 AWG; for Class 2 low-energy, remote-control and signal circuits, No. 18 AWG; and for Class 3 low-energy, remote-control, alarm, and signal circuits, No. 22 AWG.

2.4.2 Color Coding

Provide for service, feeder, branch, control, and signaling circuit conductors. Color shall be green for grounding conductors and white for neutrals; except where neutrals of more than one system are installed in same raceway or box, other neutral shall be white with colored, except green, stripe. Color of ungrounded conductors in different voltage systems shall be as follows:

a. 120/208 volt, three phase:

(1) Phase A - black

(2) Phase B - red

(3) Phase C - blue

b. 277/480 volt, three phase:

(1) Phase A - brown

(2) Phase B - orange

(3) Phase C - yellow

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

d. 480 volt, three phase dockside power connectionstations:

(1) Phase A - black

(2) Phase B - red

(3) Phase C - blue

2.4.3 Insulation

Unless otherwise required by NFPA 70, power and lighting wires shall be 600-volt, Type THWN, XHHW, or RHW, except that grounding wire may be Type TW; remote-control and signal circuits shall be Type TW, THW, or TF.

Conductors shall conform to UL 83. Where lighting fixtures require 90-degree C conductors, provide only conductors with 90-degree C insulation or better.

2.4.4 Bonding Conductors

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

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

2.4.5 Metal-Clad Cable

UL 1569; NFPA 70, Type MC cable. Cable shall have a continuous impervious corrugated aluminum sheath and overall jacket of PVC or neoprene. Cable shall be rated 600 volts and 90 degrees C continuous operating temperature.

2.4.6 Splice and Termination Components

UL 486A-486B, for wire connectors, and UL 510 for insulating tapes.

Connectors for No. 10 AWG and smaller diameter wires shall be insulated, pressure type in accordance with UL 486A-486B, twist-on splicing

SECTION 26 27 29 Page 5 connector. Provide solderless terminal lugs on stranded conductors.

2.4.6.1 Watertight Splice Box Connectors

Malleable iron with protective grounding sleeve for jacketed metal-clad cable, and designed for mounting on fiberglass splice boxes.

2.4.6.2 Watertight Pin Connectors

Connectors shall be rated 600 volts, and individual pins shall have ampere rating equal to or greater than the cable to which they are joined.

Connectors shall be molded-to-cable, quick-disconnect, polarized type having full male shroud so that when male and female assemblies are joined the shroud shall provide a completely sealed connection. Connector material shall be neoprene resistant to oil, dust, acids, and sunlight and shall be watertight.

2.5 MOUNTING STRAPS

Fiberglass or type 316L stainless steel, two-hole type designed for rigid steel conduit support.

2.6 GROUNDING AND BONDING EQUIPMENT

UL 467. Ground rods shall be copper-clad steel, with minimum diameter of 3/4 inch and minimum length of 10 feet.

2.7 NAMEPLATES

Provide nameplates in accordance with Section 26 00 00.00 20 BASIC

ELECTRICAL MATERIALS AND METHODS.

PART 3 EXECUTION

3.1 INSTALLATION

Electrical installations shall conform to requirements of NFPA 70 and to requirements specified herein.

3.1.1 Underground Service

Underground service conductors and associated conduit shall be continuous from service equipment to the power system connection.

3.1.2 Wiring Methods

Provide insulated conductors installed in rigid conduit, except where specifically indicated or specified otherwise or required by NFPA 70 to be installed otherwise. Grounding conductor shall be separate from electrical system neutral conductor. Provide insulated, green equipment grounding conductors for circuits installed in conduit and raceways. Minimum conduit size shall be 1/2 inch in diameter for low-voltage lighting and power circuits.

3.1.2.1 PVC Schedule 40 and PVC Schedule 80

a. Do not install PVC Schedule 40 in areas subject to physical damage.

b. Do not install PVC Schedule 80 in areas subject to severe physical

SECTION 26 27 29 Page 6 damage.

c. Do not install in hazardous areas.

3.1.2.2 Metal-Clad Cable

Install in accordance with NFPA 70, Type MC cable.

3.1.2.3 Underground Conduit Other Than Service Entrance

Provide RTRC (fiberglass) conduit for exposed and under-pier installation.

Provide PVC Schedule 40 conduit for concrete-encased installations.

Convert PVC conduit to RTRC within 18 inches of the point where the PVC conduit emerges from the ground.

3.1.3 Conduit Installation

Run conduit supported by hangers under pier structure. Install conduit parallel with or at right angles to structural members.

3.1.3.1 Conduit Support

Support runs of single conduit by type 316 or 316L stainless steel hangers. Support runs of multiple conduits by type 316 or 316L stainless steel trapeze. Fasten by stainless steel concrete inserts or expansion bolts on concrete. Load applied to fasteners shall not exceed one-fourth proof test load. Holes shall not cut main reinforcing bars. Fill unused holes. Where conduit crosses expansion joints, provide watertight seismic expansion and deflection fittings which maintain conduit electrical continuity by bonding jumpers or other means. Conduit supports shall not be spaced more than 6 feet apart or the maximum spacing calculated in the seismic design, whichever is less.

3.1.3.2 Directional Changes in Conduit Runs

Make changes in direction of runs with symmetrical bends or molded fittings. Make field-made bends and offsets with conduit-bending machine suitable for type of conduit used. Do not install crushed or deformed conduits. Avoid trapped conduits. Prevent dirt or trash from lodging in conduits, boxes, fittings, and equipment during construction. Free clogged conduits of obstructions.

3.1.3.3 Expansion Joints

Install as recommended by the manufacturer for the temperature conditions at time of installation.

3.1.3.4 Pull Wire

Install in empty conduits in which wire is to be installed by others. Pull wire shall be plastic having minimum 200 pound tensile strength. Leave minimum 12 inches of slack at each end of pull wire.

3.1.3.5 Telephone and Signal System Conduits

Install in accordance with specified requirements for conduit and with additional requirement that no length of run shall exceed 150 feet for trade sizes 2 inches and smaller and shall not contain more than two 90 degree bends or equivalent. Provide pull or junction boxes where necessary

SECTION 26 27 29 Page 7 to comply with these requirements. Inside radii of bends in conduits one inch trade size and larger shall be minimum five times nominal diameter.

Terminate conduit in terminal cabinet with two locknuts and plastic bushing.

3.1.3.6 Locknuts and Bushings

Fasten conduits to sheet metal boxes and cabinets with two locknuts where required by NFPA 70, where insulated bushings are provided, and where bushings cannot be brought into firm contact with the box; otherwise, provide minimum single locknut and bushing. Locknuts shall have sharp edges for digging into wall of metal enclosures. Install bushings on ends of conduits, and provide insulating type where required by NFPA 70.

3.1.3.7 Stub-Ups

Provide conduits stubbed up through concrete structures for connection to freestanding equipment with adjustable top or coupling threaded inside for plugs, set flush with finished structure. Extend conductors to equipment in rigid conduit. Where no equipment connections are made, install screwdriver-operated threaded flush noncorroding plugs in conduit end.

3.1.3.8 Conduit and Cable Connections

Provide watertight connectors for conduit and cable connections to boxes and cabinets.

3.1.4 Boxes, Outlets, and Supports

Provide boxes in wiring or raceway systems wherever required for pulling of wires, making connections, and mounting of devices or fixtures. Boxes for metallic raceways shall be cast-metal, hub type, and when specifically indicated. Boxes in other locations shall be nonmetallic boxes provided with nonmetallic conduit system. Each box shall have volume required by NFPA 70 for number of conductors enclosed in a box. Provide gaskets for boxes. Provide separate boxes for flush or recessed fixtures when required by fixture terminal operating temperature. Fasten boxes and supports with bolts and expansion shields on concrete. Support boxes directly from structure or by stainless steel hangers. Where stainless steel bar hangers are provided, attach bar to raceways on opposite sides of box, and support raceway with approved-type fastener maximum 24 inches from box. When penetrating reinforced concrete members, avoid cutting reinforcing steel.

3.1.4.1 Boxes

Boxes for use with raceway systems shall be minimum 1 1/2 inches deep, except where shallower boxes required by structural conditions are approved. Boxes shall be minimum 4 inches square, except that 4 by 2 inch boxes may be provided where only one raceway enters outlet. Telephone outlets shall be minimum of 4 inches square by 1 1/2 inches deep.

3.1.4.2 Pull Boxes

Construct of at least minimum size required by NFPA 70 compatible with nonmetallic raceway systems, except where cast-metal boxes are required in locations specified herein. Furnish boxes with screw-fastened covers.

Where several feeders pass through common pull box, tag feeders to indicate clearly electrical characteristics, circuit number, and panel designation.

SECTION 26 27 29 Page 8

3.1.5 Mounting Heights

Mount panelboards, circuit breakers, and disconnecting switches so maximum height of operating handle is 78 inches above finished structure. Measure mounting heights of wiring devices and outlets to center of device or outlet.

3.1.6 Conductor Identification

Provide within each enclosure where tap, splice, or termination is made.

For conductor sizes No. 6 AWG and smaller diameter, color coding shall be by factory-applied, color-impregnated insulation. For conductor sizes No.

4 AWG and larger diameter, color coding shall be by plastic-coated, self-sticking markers; colored nylon cable ties and plates; or heat shrink-type sleeves. Identify control circuit terminations.

3.1.7 Splices

Make splices in accessible locations. Make splices in conductor sizes No.

10 AWG and smaller diameter with insulated, pressure-type connector. Make splices in conductor sizes No. 8 AWG and larger diameter with solderless connector, and cover with insulation material equivalent to conductor insulation.

3.1.8 Covers and Device Plates

Install gasketed plates with alignment tolerance of 1/16 inch.

3.1.9 Grounding and Bonding

NFPA 70. Ground-exposed, noncurrent-carrying metallic parts of electrical equipment, metallic raceway systems, grounding conductor in metallic and nonmetallic raceways, and neutral conductor of wiring systems. Where ground-fault protection is employed, ensure that connection of ground and neutral does not interfere with correct operation of fault protection.

3.1.10 Equipment Connections

Provide power wiring for the connection of equipment.

3.2 REPAIR AND SERVICE OF EXISTING STRUCTURES AND EQUIPMENT

Perform repair of existing structures and equipment, demolition, and modification of existing electrical distribution systems as follows:

3.2.1 Workmanship

Lay out work in advance. Exercise care where cutting, channeling, chasing, or drilling of existing surfaces is necessary for proper installation, support, or anchorage of conduit, raceways, or other electrical work.

Repair damage to structure, piping, and equipment using skilled craftsmen of trades involved.

3.2.2 Existing Electrical Distribution System Removal

Include removal of equipment's associated wiring, including conductors, cables, exposed conduit, boxes, fittings, anchors, supports, and other such items, back to equipment's source. Fill holes in structure where electrical equipment is removed with material to match adjacent surface.

SECTION 26 27 29 Page 9

Provide watertight nonmetallic knockout seals in unused openings in remaining boxes, fittings, and equipment.

3.2.3 Continuation of Service

Maintain continuity of service to existing circuits of equipment to remain. Existing circuits of equipment shall remain energized. Circuits which are to remain but were disturbed during demolition shall have circuits wiring and power restored back to original condition.

3.3 FIELD QUALITY CONTROL

Furnish test equipment and personnel. Notify Contracting Officer 5 working days prior to tests.

3.3.1 Devices Subject to Manual Operation

Operate each device subject to manual operation at least five times, demonstrating satisfactory operation each time.

3.3.2 600-Volt Wiring Test

Test wiring rated 600 volts and less to verify that no short circuits or accidental grounds exist. Perform insulation resistance tests on wiring No. 6 AWG and larger diameter using instrument which applies voltage of approximately 500 volts to provide direct reading of resistance. Minimum resistance shall be 250,000 ohms.

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SECTION 26 27 29 Page 10