29-APPENDIX D - Pump Station 182 Redundant Power Electrical Specifications.pdf

INDEX

Section 16010 General Provisions Section 16450 Grounding Section 16630 Transfer Switches

APPENDIX D

PUMP STATION 182 REDUNDANT

POWER ELECTRICAL SPECIFICATIONS

SECTION 16000

ELECTRICAL SPECIFICATION INDEX

16010-1

SECTION 16010

GENERAL PROVISIONS & SCOPE OF WORK

1.0 GENERAL

1.1 Related Documents

1.1.1 Drawings and Division-1 “General Requirements” of contract, including General Conditions and Supplementary Conditions sections, apply to work specified in Division-16.

1.1.2 The intent of these specifications is to supplement the Technical

Specifications for Water and Sewer Construction (latest edition) as published by the City of Tallahassee Water Resources Engineering Division.

1.1.3 Portions of the work shall be coordinated with specifications and work instructions from the City of Tallahassee Electric Department (COT Electric).

1.2 General Description of Work

1.2.1 The Contractor shall provide all labor, materials, and equipment as described herein and on the contract document drawings, including all auxiliaries and accessories required for a complete and operable electrical system.

1.2.2 The Contractor shall obtain all necessary permits and inspections required for the work to be performed and shall pay all charges incidental thereto.

1.2.3 Bidders are expected to visit the jobsite and carefully inspect the present conditions before preparing a bid. The failure of a bidder to visit the jobsite shall not relieve a bidder from full responsibility for all factors governing this work.

1.2.4 Equipment furnished as specified in other sections of these specifications or shown on other than the Electrical drawings that require any wiring or electrical installation shall be governed by this Division of the Specifications.

1.2.5 The plans and specifications are complementary one to the other and any item called for by one and not the other shall be supplied the same as if it were called for by both. The City of Tallahassee Technical Specifications for Water and Sewer Construction (latest edition) shall be included in this specification as-if written herein.

1.2.6 It is the intent of these specifications and drawings that the electrical system shall be complete, fully operational, and suitable in every way for the service required. Drawings are diagrammatic in nature and do not show in every detail all devices and incidental materials necessary to accomplish their intent. Therefore, it shall be understood that such

16010-2 devices and incidental materials required shall be furnished at no additional cost to the Owner.

1.2.7 Layout of Work and Coordination: The Contractor shall correlate final equipment locations with all other trades to ensure all trades may install equipment in available space and provide all required coordination and supervision where work connects to or is affected by work of others.

1.2.8 The Contractor shall furnish all temporary power and lighting as required by all other trades.

1.2.9 Demonstration of Completed Electrical and Control Systems: The function of the electrical and control systems shall be demonstrated by the Owner or his representative. The contractor shall be present to verify complete and correct terminations.

1.3 Scope of Work

1.3.1 General

In general, the scope of work for the Redundant Power project is for the installation of the equipment and infrastructure to complete a second Electric Utility Service for Pump Station #182 for the City of Tallahassee Underground Utilities & Public Infrastructure Department. Part of the work shall be performed by the Electric Utility (City of Tallahassee Electric Department) and part of the work shall be performed by the Contractor. A portion of the work shall have been performed by ‘Others” prior to the execution of this Project. The Scope of Supply/Division of Responsibility is defined by a document attached to this specification.

The work shall include the supply and installation of U/G conduits to establish the route of the MV circuit that will be the “redundant power circuit”. This work shall require coordination with the Electric Utility (City of Tallahassee Electric Department). The path is defined by drawings from Kimley-Horn and includes directional boring techniques to be executed within the existing Right-of-Way (ROW). The intent is for one contractor to be responsible for the Utility conduit work and the work at PS #182. Installation of the conduit (supplied by the Contractor) and termination cabinets (supplied by City of Tallahassee Electric Department) shall be paid for under Bid Item 4 on the Bid Schedule.

The work shall include coordination with the Electric Utility (City of Tallahassee Electric Department) for the installation of a padmounted transformer and installation of the primary conductors. The transformer pad and the primary conduits at PS #182 site shall have been installed by Others. The work shall include the supply and installation of the Main Breaker (2000 amps) (Bid Item 9) and the Automatic Transfer switch (ATS – Redundant Power or Main-to-Main) (Bid Item 11) as coordinated with the overall PS #182 Project. The installation shall include conduit and cable from the secondary of one transformer to the new Main Breaker (Bid Item 5) and from the new Main Breaker to the new ATS (one side of the Main-to-Main ATS – aka Service -to-Service ATS) (Bid Item 10). The work shall also include rework of the existing Main Breaker’s outgoing feeder to the new Main-to-Main ATS and the

16010-3 installation of the conduit and cable for the “Load” connection of the new ATS to the Normal Power connection of the existing ATS (Utility-to- Generator ATS – the generator connection will have been made by Others) (Bid Item 12). The scope of work described in this document is for the Electrical work that will take place on the PS #182 site. This work shall be coordinated with the Overhead (O/H) and Underground (U/G) Distribution work performed by the Utility. The O/H Distribution work shall include the connection/riser to O/H power lines and a connection to a padmounted transformer. The U/G distribution work shall include the 15KV circuit routed to the PS #182 Site and connected to a padmounted transformer (see Scope of Supply/Division of Responsibility document).

In general, the Electrical work at PS #182 Site shall be as described:

• The installation of a new service to provide redundant power to the facility. The facility shall ultimately have two (2) utility services that shall be part of an Automatic Transfer System – ATS. The primary ductbank, transformers pads, and secondary ductbank for both services shall be supplied and installed by Others. The primary cable and transformer for the new service shall be installed by the Utility (coordination with the Electric Utility – City of Tallahassee Electric Department is part of the work). The secondary cable, CT/PT Enclosure, meter, and main breaker shall be supplied and installed by the Contractor for one service (coordination with the Electric Utility – City of Tallahassee Electric/Meter Department is part of the work). The supply and installation of the conduit to transition from the U/G ductbank to above grade conduit and route to new enclosures shall be part of the Contractor’s work. (Bid Items 5-8)

• The installation of the Main Breaker (2000A) shall require coordination with the Owner and the configuration of the MCC Building (aka Electrical Equipment Room – EER ; by others/existing). (Bid Item 9)

• The installation of the ATS shall require coordination with the Owner and the configuration of the MCC Building (aka Electrical Equipment Room – EER ; by others/existing). (Bid Item 11)

• The supply and installation of the secondary (480VAC) cables is part of the work. (Bid Item 5)

1.3.2 Work by Contractor

The scope of work to be performed by the contractor is described in the “bulleted” sections below. In general, the intent is for the Contractor to supply and install the equipment and material listed below.

• The electrical service designed as a redundant 2000-amp 480VAC 3-hase service will include a padmounted transformer provided by the City of Tallahassee Electric Department and a 2000-amp CT/PT enclosure(s), a Main Breaker and a 2000-amp Automatic Transfer Switch (ATS) supplied and installed by the Contractor. The work is for one complete service to be installed for the Project to complete the Redundant Power System – i.e., two Utility Services as the finished design/operation. The Contractor’s work will include.

o Coordination with the installation of the conduit from the transformer pads to the EER for the Main Breaker (located in the EER). The conduit for the

16010-4 redundant/second service shall have been stubbed-up and capped for use (supply and installation of conduit to extend the U/G conduits shall be part of this work) (Bid Item 5). This work will include the supply and installation of the one set of current transformers “CT Can” and the Electric Meter (each service shall be metered separately - coordinate with the COT Meter Shop) (Bid Item 6).

o The supply and installation of the secondary conductors for one service. The work includes terminations at the transformer and at the Main Breaker. Cables shall be routed through the CT Can (terminations on bus bars) (Bid Item 5).

o The supply and installation of the one (1) - 2000 amp Main Breaker (Bid Item 9) and the Automatic Transfer Switch associated with the Main-to-Main connection (Redundant Power) (Bid Item 11).

o The work shall include the on-site testing of the ground fault function of the Main Breaker (LSIG – “G” function per NEC230.95 (C)). This testing is incidental to the work, and no separate pay item is provided. The costs incurred by the contractor to perform the testing should be included in other bid items.

o The supply and installation of the conduit and cable to connect the existing Main Breaker to the Main-to-Main ATS (Bid Item 8).

o The supply and installation of the conduit and cable to connect the new Main Breaker to the Main-to-Main ATS (Bid Item 10).

o The supply and installation of the conduit and cable to connect the Load connection of the Main-to-Main ATS to the existing ATS (Utility-to-Generator) (Bid Item 12).

o Grounding for the transformers and for the Service equipment. Grounding is incidental to the work, and no separate pay item is provided. The costs incurred by the contractor to install the grounding per these specifications should be included in other bid items.

1.3.3 Check-Out and Start-Up

The scope of work includes check-out and start-up work. Timing of this work shall be coordinated with the Owner. The intent is for the EIC Contractor to provide support for the SCADA supplier/programmer and the Pump Station Operator (i.e., the Owner). Support of the Utility for the check-out and start-up of their equipment is part of the work. (Bid Item 13).

1.4 Submittals

1.4.1 Manufacturers’ data in the form of “cut sheets” and engineering drawings of the equipment and materials shall be submitted to the Engineer for review before delivery to work site. Review of the submittal by the Engineer is to check for general conformance to the design intent and shall not relieve the Contractor of the responsibility for the correctness of all dimensions and the correct fitting of all parts of the work.

16010-5

1.4.2 The entire Electrical Submittal shall be complete and delivered in one (1) package. An incomplete submittal will be returned to the Contractor without review.

1.4.3 The submittal shall be thoroughly checked by the Contractor for accuracy and compliance with the contract requirements. The submittal shall be dated and shall be accompanied by a statement from the contractor that they have been checked for conformity to the specifications and drawings. Submittals not so checked and noted will be returned without review.

1.4.4 Substitutions: Requests for substitutions shall be per General Conditions set forth in this specification and must be received in the Owner’s office a minimum of ten days prior to bid, including credits and test and performance data to determine if equipment meets all specifications and requirements. Substitutions will not be reviewed if submitted with bid.

All substituted equipment that cannot meet space requirements shall be replaced at the Contractor’s expense.

1.4.5 Any alternate proposals affecting the design or intent of the plans and specifications shall be submitted with the bid. They shall be complete with plans, specifications and sufficient details for proper evaluation.

Incomplete or partial proposals will not be given consideration.

1.5 Record Drawings

1.5.1 At Job Close-Out, submit three (3) copies of Record Drawings which are clean, complete, and accurate and clearly show deviations to the Contract Drawings. Record Drawings are incidental to the work, and no separate pay item is provided. The costs incurred by the contractor to provide Record Drawings meeting this specification should be included in other bid items.

1.6 Guarantees

1.6.1 In addition to the guarantee of equipment by the manufacturer, the Contractor shall also guarantee such equipment and shall be responsible for a period of one year after final acceptance to make good any defects of the materials or workmanship occurring during this period, without expense to the Owner.

1.6.2 Additional guarantee requirements may be in the General and Special

Conditions of these Specifications.

16450 - 1

SECTION 16450

GROUNDING

1.0 GENERAL

1.1 Scope of Work

1.1.1 The work required under this section of the specifications consists of the installation of the complete grounding system for the project. Provide all materials required for the grounding system under this section of the specifications.

1.1.2 The grounding system shall include grounding conductors and ground rods for the modification to the Electrical Service and connection of the existing grounding system. The grounding conductors and ground rods shall be connected by permanent connections (exothermic weld or hydraulic compression). Supply and installation of equipment grounds with the wire/cabling is part of the work and grounding system.

1.2 Related Work

1.2.1 Coordinate installation of grounding system with all work required under the project specifications and drawings.

1.2.2 Coordinate with any existing grounding systems at project site.

1.3 Application

1.3.1 Equipment grounding conductors shall be used to establish grounding of the entire system.

1.3.2 Equipment grounding shall not be by metallic raceway alone.

1.3.3 Table 250-66 of the NEC (2017) shall be used to size all grounding electrode conductors.

1.3.4 Table 250-122 of the NEC (2017) shall be used to size equipment grounding conductors.

2.0 PRODUCTS

2.1 Ground Rods

2.1.1 Ground rods shall be 5/8" x 10', sectional type coupled together to obtain length required, unless indicated otherwise.

2.1.2 Construction shall be a solid steel core with a heavy uniform covering of electrolytic copper.

2.1.3 Threads, on sectional rods, shall be rolled (not cut) into the composite metal after the copper covering has been applied.

2.1.4 Copper covering shall be work hardened by drawing rods.

2.1.5 Rod couplings shall be of a corrosion resistant alloy.

16450 - 2

2.2 Grounding Electrode Conductor and Connections

2.2.1 All grounding electrode conductors shall be stranded copper.

2.2.2 Conductor connections shall be by permanent connection - exothermic weld (Cadweld or equal) or hydraulic compression connection.

2.3 Equipment Grounding Conductors

2.3.1 Equipment grounding conductors shall be Green with THHN or XHHN insulation.

See Section 16100 paragraph 2.3 and reference to The City of Tallahassee - Technical Specifications for Water and Sewer Construction (Section 11 - November 2019 or latest edition) for Wiring.

3.0 EXECUTION

3.1 Installation

3.1.1 Ground all non-current carrying metal parts of the electrical system to provide a low impedance path for ground fault current.

3.1.2 The neutral conductor(s) of the incoming electrical service shall be grounded to the ground rod system, metal piping system, and structural steel using Table 250-94 of the NEC for conductor sizing. Grounding conductors shall be run in rigid non-metallic conduit.

3.1.3 Separate bus bars shall be provided for branch circuit neutrals and equipment grounding conductors. These bars will be joined together at only one point with a bonding jumper at the service and shall be isolated throughout the system.

3.2 Testing

3.2.1 The Contractor shall test the ground rod for ground resistance by the Fall of Potential method.

3.2.2 Ground resistance shall be measured at 10 ohms or less. If ground resistance is greater than 10 ohms, additional ground rods shall be driven and the ground system retested.

3.2.3 Records of the ground resistance test shall be submitted to the Engineer.

END OF SECTION

16630-1

SECTION 16630

AUTOMATIC TRANSFER SWITCHES (ATS)

1.0 GENERAL

1.1 Related Documents

1.1.1 Drawings and general provisions of Contract, including General and Supplementary Conditions and Division-1 Specification sections, apply to work of this section.

1.1.2 Division-16 Basic Electrical Materials and Methods sections apply to work specified in this section.

1.2 Description of Work

1.2.1 Extent of transfer switch work, including associated control devices, is indicated by drawings and schedules, and as specified herein. The intent is for the ATS to be coordinated with the ATS that is being supplied with the generator for the PS #182 Project. The intent is for this ATS to provide automatic switching between two 480VAC services. The Load of this ATS will be the “Utility” connection for another ATS that is connected to a Stand-by Generator (second ATS and generator are by the other project).

1.2.2 Types of transfer switches required for the project include the following:

� Automatic Transfer Switch (ATS) – for Utility-to-Utility

1.2.3 Refer to other Division-16 sections for wires/cables, electrical raceways, boxes, and fittings, which are required in conjunction with transfer switch work; not work of this section.

1.2.4 Grout for transfer switch pads (if needed) shall be Set Grout (Masterflow -928 or Engineer approved alternate).

1.2.5 Coordination of the operation of the ATS with the Owner’s SCADA system shall include relays and/or contact closure to provide status inputs for the control system.

The contractor shall coordinate this control scheme and interface with the Owner.

Status inputs required:

• ATS transfer to Generator (ATS position status)

• Sources Available

1.2.6 NOT USED

1.3 Submittals:

1.3.1 Product Data: Submit manufacturer's data and installation instructions for electrical power transfer switches.

1.3.2 Shop Drawings: Submit layout drawings of electrical power transfer switches showing accurately scaled equipment locations and spatial relationships to associated electrical equipment in proximity.

16630-2

1.4 Quality Assurance:

1.4.1 Manufacturer's Qualifications: Firms regularly engaged in manufacture of electrical power transfer switches, of types, ratings, and characteristics required, whose products have been in satisfactory use in similar service for not less than 5 years.

1.4.2 Installer's Qualifications: Firm with at least 3 years of successful installation experience on project utilizing electrical power transfer switches similar to that required for this project.

1.4.3 Codes and Standards:

Electrical Code Compliance: Comply with applicable local electrical code requirements of the authority having jurisdiction and NEC as applicable to construction and installation of electrical power transfer switches.

The automatic transfer switch shall conform to the requirements of:

A. UL 1008: Underwriters Laboratories standard for automatic transfer switches

B. CSA: C22.2 No. 178 certified at 600 VAC C. IEC: 947-6-1 certified at 480 VAC D. NFPA 70: National Electrical Code including use in emergency and standby systems in accordance with Articles 517, 700, 701, 702

E. NFPA 99: Essential electrical systems for health care facilities F. NFPA 101: Life safety code G. NFPA 110: Standard for emergency and standby power systems H. IEEE 241: I.E.E.E. recommended practice for electrical power systems in commercial buildings I. IEEE 446: I.E.E.E. recommended practice for emergency and standby power systems J. NEMA ICS10: AC automatic transfer switch equipment

(supersedes ICS2-447) K. UL 50/508: Enclosures L. ICS 6: Enclosures M. ANSI C33.76: Enclosures N. NEMA 250: Enclosures O. IEEE 472: (ANSI C37.90A): Ringing wave immunity P. EN55022 (CISPR11): Conducted and radiated emissions

(Exceeds EN55011 & MILSTD 461 Class 3) Q. EN61000-4-2: (Level 4): ESD immunity test Class B:

R. EN61000-4-3: (ENV50140): Radiated RF, electromagnetic field immunity test S. EN61000-4-4: Electrical fast transient/burst immunity test T. EN61000-4-5: IEEE C62.41: Surge immunity test (1.2 x 50µs, 5 &

8 kV) U. EN61000-4-6: (ENV50141): Conducted immunity test V. EN61000-4-11: Voltage dips and interruption immunity W. IEE-693-2005: Seismic certified at high level with 2.5 amplification factor X. IBC-2003: At Ip=1.5 for z/h less than or equal to 1

(in accordance with ICC-ES-AC156)

16630-3

1.5 Delivery, Storage and Handling:

1.5.1 Deliver transfer switches and associated devices in factory-fabricated type containers or wrappings, which properly protect equipment from damage.

1.5.2 Store transfer switches and associated devices in original packaging and protect from weather and construction traffic.

Wherever possible, store indoors; where necessary to store outdoors, store above grade and enclose with watertight wrapping.

1.5.3 Handle transfer switches and associated devices carefully to prevent physical damage to equipment. Do not install damaged equipment; remove from site and replace damaged equipment with new equipment.

2.0 PRODUCTS

2.1 Acceptable Manufacturers:

2.1.1 Manufacturers: Subject to compliance with requirements, provide transfer switches of one of the following or approved equal:

� Transfer Switch for the Utility-to-Utility (Main-to-Main) transfer shall be of the same basic construction as the Utility-to-Generator ATS.

The intent is to provide uniform equipment to simplify maintenance and spare parts.

2.2 Transfer Switches:

2.2.1 General: Except as otherwise indicated, provide manufacturer's standard design, materials, and components as indicated by published product information, designed and constructed as recommended by manufacturer for duty indicated, and as required for a complete installation.

In general, the ATS shall comply with the following:

A. The automatic transfer switch shall be of double throw construction operated by a reliable solenoid driven mechanism. There shall be a direct mechanical coupling to facilitate transfer in 6 cycles or less.

B. The normal and emergency contacts shall be mechanically interlocked such that failure of any coil or disarrangement of any part shall not permit a neutral position.

C. The contact structure shall consist of a main current carrying contact, which is a silver alloy with a minimum of 50% silver content. The current carrying contacts shall be protected by silver tungsten arcing contacts on all sizes above 600 Amps.

D. The transfer switch manufacturer shall submit test data for each size switch, showing it can withstand fault currents of the magnitude and the duration necessary to maintain the system integrity. Minimum UL listed withstand and close into fault ratings shall be as follows:

16630-4

Size (Amps) Coordinated Breaker Current Limiting Fuse 40 - 225 30,000 200,000 260 to 600 50,000 200,000 800 65,000 200,000 1000 - 1200 85,000 200,000 1600 - 3000 100,000 200,000

(all values at 480V RMS symmetrical, less than 20% power factor)

E. The automatic transfer switch manufacturer shall certify sufficient arc interrupting capabilities for 50 cycles of operation between a normal and emergency source that are 120 degrees out of phase at 480 volts, 600% of rated current at .50 power factor. This certification is to ensure that there will be no current flow between the two isolated sources during switching.

F. All relays shall be continuous duty industrial type with wiping contacts. Coils, relays, timers and accessories shall be readily front accessible. The control panel and power section shall be interconnected with a harness and keyed disconnect plugs for maintenance.

G. Main and arcing contacts shall be visible without major disassembly to facilitate inspection and maintenance.

H. A manual handle shall be provided for maintenance purposes with the switch de-energized. An operator disconnect switch shall be provided to defeat automatic operation during maintenance, inspection or manual operation.

I. The current rating shall be a continuous rating when the switch is installed in an enclosure, and shall conform to NEMA temperature rise standards.

J. The unit shall be rated based on all classes of loads, i.e., resistive, tungsten, ballast and inductive loads. Switches rated 400 amperes or less shall be UL listed for 100% tungsten lamp load.

K. Temperature rise tests in accordance with UL 1008 shall have been conducted after the overload and endurance tests to confirm the ability of the units to carry their rated currents within the allowable temperature limits.

L. Unless specified otherwise on the drawings, the switch shall be mounted in a NEMA 1 enclosure.

2.2.2 Automatic Transfer Switches and auxiliary equipment factory fabricated and of types, sizes, ratings and electrical characteristics, for services indicated, which are electrically operated. Mechanically held, and electrically and mechanically interlocked shall be provided.

2.2.3 Transferring the Load from primary to secondary source shall be automatic when normal line voltage drops below 80 percent of rated value. The load shall automatically transfer back to normal source when voltage is restored to greater than 90 percent of rated value. All transfers shall have adjustable time delay controls.

2.2.3.1 For the Utility-to-Utility ATS the primary source and the secondary source shall be selectable from the ATS control panel. The “re-transfer” function shall be selectable as manual or automatic (if automatic a time delay shall be programmable).

16630-5

2.2.4 Operating Time of the switch transferring in either direction shall be less than 10 seconds.

2.2.5 Controls and Contacts shall consists of: an adjustable time delay to prevent excessive transfer and retransfer operations, sensors for sensing the availability of each source and relays to interface to a monitoring system (SCADA). All time settings and adjustments shall be accessible via an operator interface at the ATS.

� Test switch for manual simulation of power outages including standby unit operation and load transfer.

� Time-clock exerciser circuit for automatic periodic exercise of the ATS to utilize the separate sources.

In general, the controls of the ATS shall conform to the following:

A. The control panel shall be opto-isolated from electrical noise and provided with the following inherent control functions and capabilities:

1. Easy-to-view Display Screen (vendor’s std.), and with LED indicators.

2. Control panel shall display voltage and frequency of both sources.

3. The user shall be able to view the last 16 recorded events.

4. Capability for external communication and network interface.

5. Adjustments to all settings shall be made from the front of the panel without opening the door.

B. The transfer switch shall be equipped with a microprocessor based control panel.

The control panel shall perform the operational and display functions of the transfer switch. The display functions of the control panel shall include ATS position, source availability, sequence indication and diagnostics.

C. All programmable and control functions shall be pass code protected and accessible through the keypad.

D. The control panel shall be provided with a simple user interface for transfer switch monitoring, control and field changeable functions and settings.

E. Touch pad test switch with Fast Test/Load/No Load selection capability to simulate a normal source failure.

F. The controller shall provide digital timer adjustments with 1-second resolution.

Voltage and Frequency shall be adjustable to 1% resolution to facilitate accurate transfer.

G. To ensure reliable and consistent user operation the controls must be equipped with nonvolatile memory and allow automatic daylight savings time adjustment.

2.2.6 ARC Barriers shall be provided between poles for non-inductive loads. For inductive loads, equip poles with magnetic blowouts and ARC barriers.

2.2.7 Copper Lugs shall be provided for terminating the number and sizes of cables as indicated on the drawings and schedules.

2.2.8 Enclosure shall be a free-standing 14-gauge welded steel NEMA 1 with swing out service panel and door locks. Coat enclosure with manufacturer's standard color

16630-6 acrylic enamel finish over a corrosion - resisting primer.

3.0 EXECUTION

3.1 Examination:

3.1.1 Examine areas and conditions under which transfer switches are to be installed and notify Contractor in writing of conditions detrimental to proper completion of the work. Do not proceed with the work until unsatisfactory conditions have been corrected in a manner acceptable to the Installer.

3.2 Installation of Transfer Switch Equipment:

3.2.1 Install transfer switches, including associated control devices as indicated in accordance with equipment manufacturer's written instructions, and with recognized industry practices, to ensure that transfer switches comply with requirements.

Comply with applicable requirements of NEC and NFPA pertaining to writing practices and installation of electrical power transfer switches.

3.2.2 Coordinate with other electrical work including raceways and electrical boxes and fittings, as necessary to interface installation of transfer switch work with other work.

3.2.3 Tighten electrical connectors and terminals, including screws and bolts, in accordance with equipment manufacturer's published torque tightening values for equipment connectors. Where manufacturer's torquing requirements are not indicated, tighten connectors and terminals to comply with tightening torques specified in UL Stds 486A and B.

3.3 Grounding:

3.3.1 Provide equipment grounding connections for transfer switch units as indicated.

Tighten connectors to comply with tightening torques specified in UL Std 486A to assure permanent and effective grounding.

3.4 Field Quality Control:

3.4.1 Test transfer switches, by means of simulated power outage; automatic start-up by remove-automatic starting, transfer of load, and automatic shutdown. Prior to these tests, adjust transfer switch timers for proper system coordination.

Upon completion of installation and after circuitry has been energized, demonstrate capability and compliance of transfer switches with requirements. Where possible, correct malfunctioning units as site and retest to demonstrate compliance;

otherwise, remove and replace with new units, and proceed with retesting. Initial testing and retesting, where necessary, at no cost to Owner.

3.5 Personnel Training:

3.5.1 Building Operating Personnel Training: Train Owner's building personnel in procedures for starting-up, testing and operating transfer switches and auxiliary equipment.

END OF SECTION

SCOPE OF SUPPLY - DIVISON OF RESPONSIBILTY

Project : Pump Station #182 Electrical Redundancy Location : Orange Avenue - Tallahassee, FL Date : April 3, 2025 Revision : 1

SCOPE ITEM SPECIFICATION PURCHASE INSTALL COMMENTS Bid Item(s) Primary Circuit from Termination Cabinet (TC) at Engineering Way . Includes supply and installation of cable and terminations.

COT Electric COT Electric COT Electric COT Electric will supply and install cable from TC to the proposed TC at PS #182 site. Installation shall be in existing Right-of-Way.

N/A

Conduits for Primary Circuit from Termination Cabinet (TC) at Engineering Way to TC at PS182 .

Includes directional boring. The installation shall be in existing Right-of-Way. Reference drawings C300 - C303, C400 etc.

Kimley-Horn COT Electric

NHWL

Contractor Contractor

Contractor shall supply and install conduits for the path of the MV circuit in coordination with the design by Kimley-Horn (approved by COT). The bulk of the installtuon shall be by ditrectional boring

Conduits from TC at PS #182 site and O/H Distribution to new padmounted transformers.

NHWL

COT Electric

Others Others Conduits shall have been installed by PS #182 installation contractor. N/A

15KV cable from 15KV TC to padmounted step-down transformer at PS #182 COT Electric COT Electric COT Electric

COT Electric to provide and install/terminate all 15KV cable. N/A

15KV terminations at TC and at transformer -including all materials required; 200A load break elbows/inserts, tapes, grounding straps, etc.

COT Electric COT Electric COT Electric All 15KV terminations (including high side of the transformer, the TC, and O/H distribution) are by COT Electric.

N/A

Concrete foundation/pad for padmounted step-down transformers COT Electric Others Others

Pads shall have been installed by PS #182 installation contractor. N/A

15KV (12.47KV) to 480V Step-Down Transformer -purchase and install COT Electric COT Electric COT Electric

COT Electric will set the transformer on the pads.

Contractor shall coordinate installation of cables with installation.

N/A

Conduit and wire for 480V service from the Transformer to the Main Breaker and Service-to- Service ATS. This includes CT/PT Enclosure and Meter Enclosure as coordinated with COT Electric

NHWL Contractor Contractor

Coordinate conduit to complete the service with U/G conduits previously installed by Others.

(fyi -Service-to-Service and main-to-main in the documentation is the same).

5-8

2000 Amp CT/PT enclosure(s). Supply and install the enclosures - bus bar style to match the existing. Cooridnate the installation of CT's and PT's with City of Tallahassee Electric Department

NHWL

(match existing)

Contractor Contractor

The 2000 amp CT/PT enclosures are shown on NHWL drawing E3 and shall be supplied by the contractor. The CT's and PT's shall be supplied by COT. Coordinate installation and wiring.

600V rated (480V) Automatic Transfer Switch (ATS) for Service-to-Service connection. ATS shall be installed in the PS #182 EER Building.

NHWL Contractor Contractor

Contractor shall purchase, receive, store, and install the ATS adjacent to the existing equipment.

Contractor shall coordinate installation with COT.

2000 Amp (480V) Main Breaker - NEMA 1 floor mounted enclosure

NHWL Contractor Contractor

Contractor shall purchase, receive, store, and install the Main Breaker adjacent to the existing equipment. Contractor shall coordinate installation with COT.

Conduit and wiring between the Service-to-Service ATS and the existing Main Breaker and existing ATS (Utility-to-Generator)

NHWL Contractor Contractor The intent is to utiize the existing cable tray as much as possible, and to install new conduit and wiring in/out of the cable tray

10, 12

Erosion Control and Maintenance of Traffic at PS 182 Site COT / NHWL Contractor Contractor 2

Commissioning and start-up assistance from the Contractor.

NHWL

COT Electric

Contractor Contractor

Contractor shall include man-hours to assist in the commissioning and start-up of the new equipmnet, the COT Electric equipment, and the re-start of the exsiting PS #182 equipment.

PS #182 Redundant Power - 16450 - Grounding.pdf