3534-20260416120617 COLUMBUS.pdf

Atwell & Gent, P.A.

Starkville, Mississippi

ADDENDUM NUMBER 1

DATE: April 16, 2026

PROJECT: Parkview Development - Electrical Site Package (Re-Bid)

PROJECT NUMBER: 119E3031

OWNER: Columbus Redevelopment Authority

TO: Prospective Bidders

This Addendum forms a part of the Contract Documents and modifies the March 25, 2026 Request for Proposals document with amendments and additions noted below. Acknowledge receipt of this Addendum in the space provided in the Bid Form. Failure to do so may disqualify the Bidder.

ADDENDUM TABLE OF CONTENTS:

This Addendum consists of two (2) pages and four (4)attachments.

1. Distribution Assembly UC-2.1F.

2. Distribution Assembly UC-2.3F.

3. Section 33 73 14.

4. Appendix C.

SPECIFICATION CHANGES

1. Replace Distribution Assembly UC-2.1F in its entirety with new Distribution Assembly UC-2.1F modified by Addendum #1 dated April 16, 2026.

Explanation: Changes riser conduits from fiberglass (FRE) to PVC (Schedule 80). Note: No spare conduits are required on risers.

2. Replace Distribution Assembly UC-2.3F in its entirety with new Distribution Assembly UC-2.3F modified by Addendum #1 dated April 16, 2026.

Explanation: Changes riser conduits from 4” to 2” and changes from fiberglass (FRE) to PVC (Schedule 80). Note: No spare conduits are required on risers.

3. Replace Section 33 73 14 in its entirety with new Section 33 73 14 modified by Addendum #1 dated April 16, 2026.

Explanation: Clarifies that transformer pad foundations are Contractor-Furnished, Contractor installed.

4. Replace Appendix C in its entirety with new Appendix C modified by Addendum #1 dated April 16, 2026.

Explanation: Corrects item description for Bid Item #86 from #1/0 to #4/0.

Starkville, Mississippi

CLARIFICATIONS

1. Question: Page 33 73 14-2 states that foundations for single-phase pad-mounted transformers shall be owner-furnished, contractor installed. Will this be a preformed pad provided by someone like Lee’s Precast or will another party be pouring these on-site?

Response: These will be precast and should be Contractor-Furnished, Contractor Installed.

We will issue an Addendum correcting this point.

2. Question: Based on Appendix C, it looks like we will still be responsible for all conduits required except riser conduits. Is this correct?

Response: Correct.

3. Question: Unit SVC-100 does not state owner-furnished, was this done with the intention of the contractor providing materials for that unit?

Response: Correct, this entire Assembly is Contractor-Furnished, Contractor Installed.

4. Question: Based on Appendix C, the only secondary materials I see provided by owner are secondary pedestals and 3000’ of 4/0 triplex. Are both 120V & 240V branch circuits as well as the lighting fixtures & lighting standard to be contractor-furnished?

Response: Correct, all 120V & 240V branch circuits, lighting fixtures, lighting standards, and lighting foundations are Contractor-Furnished, Contractor Installed.

NONESCALEAPPROVED

CHECKED

DRAWN R.E.W.

DATE

JOB NO.

ASSEMBLY DRAWING

SINGLE PHASE PRIMARY RISER, 200 AMPERE

UC-2.1F

DRAWING NO.

FIBERGLASS CONSTRUCTION

NOTE:

1. ASSEMBLY UNIT DOES NOT INCLUDE PRIMARY

OR NEUTRAL FRAMING UNITS.

2. INSTALL ONE (1) 2" RISER CONDUIT ON POLE.

SUPPORT CONDUIT WITH CONDUIT SUPPORT

BRACKETS AT 10' INTERVALS.

3. SUPPORT EACH UD CABLE USING BASKET TYPE

GRIP.

3'-4"

1' -6

4"

8"

6"

8" 1'

-0

8"

3' -6

4'

-0

2' -0

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Mark Qty. Unit

1 AS REQ'D EA

2 AS REQ'D LF

3 1 EA

4 1 EA

5 1 EA

6 1 EA

7 AS REQ'D LF

8 AS REQ'D LF

9 2 EA

10 2 EA

11 1 EA

12 1 EA

13 AS REQ'D LF

14 1 EA

15 1 EA

16 AS REQ'D EA

17 AS REQ'D EA

18 AS REQ'D EA

Sheet

Job No. of

Date 1

Prepared By

SINGLE PHASE PRIMARY RISER, 200 AMPERE

FIBERGLASS CONSTRUCTION

UC-2.1F

Bill of Material For

BILL OF MATERIAL

CONNECTOR, COMPRESSION, REQUIRED TYPE AND SIZE

WIRE, WILDLIFE, 15 KV, #4 COPPER

BRACKET, EQUIPMENT, SINGLE PHASE, FIBERGLASS

CABLE, 15 KV, JCN, REQUIRED TYPE AND SIZE

CONDUIT, CABLE RISER, SCHEDULE 80 PVC, 2"

Description

ARRESTER, SURGE, RISER CLASS, REQUIRED TYPE AND SIZE

CABLE TERMINATOR, 15 KV, REQUIRED TYPE AND SIZE

SWITCH, FUSED CUTOUT, 15 KV, 100 AMPERE

HOOK , DRIVE, 7/16" X 4 -3/4"

BOLT, MACHINE, 5/8" X REQUIRED LENGTH

WASHER, SQUARE, 2-1/4", 11/16" HOLE

WIRE, GROUND, #6 SD BARE COPPER

KELLUM GRIP, SIZE AS REQUIRED FOR UD CABLE

CLAMP, STIRRUP, MECHANICAL, REQUIRED TYPE AND SIZE

CLAMP, HOTLINE, REQUIRED TYPE AND SIZE

LOCKNUT, 5/8"

WASHER, SPRING, DOUBLE COIL, 11/16" HOLE (WOOD POLES ONLY)

CONDUIT STANDOFF BRACKET, WITH 4" STRAPS

NONESCALEAPPROVED

CHECKED

DRAWN R.E.W.

DATE

JOB NO.

ASSEMBLY DRAWING

THREE PHASE PRIMARY RISER, 200 AMPERE

UC-2.3F

DRAWING NO.

FIBERGLASS CONSTRUCTION

2' -6

2'

-6

2 5

3'-4"

4"

8"

6"

8"11

1' -0

2'

-0

1' -6

6"6" 2'-0" 1'-6" 3'-6"

NOTES:

1. ASSEMBLY UNIT DOES NOT INCLUDE

PRIMARY OR NEUTRAL FRAMING UNITS.

2. INSTALL THREE (3) 2" RISER CONDUITS

ON POLE. SUPPORT CONDUITS WITH

CONDUIT SUPPORT BRACKETS AT 10'

INTERVALS.

3. SUPPORT EACH UD CABLE USING

BASKET TYPE GRIP.

16 17

7' -6

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Mark Qty. Unit

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2 AS REQ'D LF

3 1 EA

4 3 EA

5 3 EA

6 3 EA

7 AS REQ'D LF

8 AS REQ'D LF

9 AS REQ'D EA

10 AS REQ'D EA

11 3 EA

12 3 EA

13 AS REQ'D LF

14 1 EA

15 3 EA

16 AS REQ'D EA

17 AS REQ'D EA

18 AS REQ'D EA

Sheet

Job No. of

Date 1

Prepared By

CONDUIT STANDOFF BRACKET, WITH 2" STRAPS

BILL OF MATERIAL

CONNECTOR, COMPRESSION, REQUIRED TYPE AND SIZE

WIRE, WILDLIFE, 15 KV, #4 COPPER

CABLE, 15 KV, JCN, REQUIRED TYPE AND SIZE

CONDUIT, CABLE RISER, SCHEDULE 80 PVC, 2"

SWITCH, CUTOUT, SOLID BLADE, 15 KV, 300 AMPERE

Description

ARRESTER, SURGE, RISER CLASS, REQUIRED TYPE AND SIZE

CROSSARM, FIBERGLASS, 8' LENGTH, WITH POLE MOUNTING

BRACKET

THREE PHASE PRIMARY RISER, 200 AMPERE

FIBERGLASS CONSTRUCTION

UC-2.3F

Bill of Material For

CABLE TERMINATOR, 15 KV, REQUIRED TYPE AND SIZE

HOOK, DRIVE, 7/16" x 4-3/4"

LOCKNUT, 5/8"

WASHER, SPRING, DOUBLE COIL, 11/16" HOLE (WOOD POLES ONLY)

CLAMP, STIRRUP, MECHANICAL, REQUIRED TYPE AND SIZE

CLAMP, HOTLINE, REQUIRED TYPE AND SIZE

WIRE, GROUND, #6 SD BARE COPPER

BOLT, MACHINE, 5/8" X REQUIRED LENGTH

WASHER, SQUARE, 2-1/4", 11/16" HOLE

KELLUM GRIP, SIZE AS REQUIRED FOR UD CABLES

33 73 14-1

Starkville, Mississippi Modified by Addendum #1 dated 04/16/2026

SECTION 33 73 14

SINGLE PHASE PAD-MOUNTED TRANSFORMERS

PART 1 GENERAL

1.1 SCOPE

A. Section Includes:

1. Liquid Filled Transformers.

2. Service Conditions.

3. Ratings.

4. Construction.

5. Transformer Efficiencies and Losses.

6. Bushings and Terminals.

7. Fusing.

8. Accessories.

9. Nameplate.

10. Labeling.

11. Noise.

12. Fabrication.

13. Factory Finishing.

14. Quality Control.

15. Transformer Pad Foundations.

B. Related Sections:

1. Section 26 00 00 - General Provisions for All Electrical Work.

2. Section 26 05 53 - Identification of Electrical Systems.

3. Section 31 23 17 - Excavation, Trenching and Backfill.

4. Section 33 17 19 - Underground Ducts for Medium-Voltage Systems.

5. Section 33 71 49 - Cables, Splices, and Terminations for Medium-Voltage Systems.

6. Section 33 71 73 - Electrical Service.

7. Section 33 79 19 - Grounding and Bonding for Medium-Voltage Systems.

8. Appendix C - Owner-Furnished Materials.

33 73 14-2

Starkville, Mississippi Modified by Addendum #1 dated 04/16/2026

1.2 OWNER-FURNISHED MATERIALS

A. Unless noted otherwise (“OWNER-FURNISHED, CONTRACTOR INSTALLED”), CONTRACTOR shall furnish materials for Pay Items specified in this Section). For items noted “OWNER-FURNISHED, CONTRACTOR INSTALLED,” OWNER shall furnish, and CONTRACTOR shall install Pay Item. Refer to Section 01 64 00.

1.3 SUMMARY

A. The Work under this Section consists of furnishing materials, equipment, labor, and performance of all operations necessary for the installation of single phase pad-mounted transformers, as shown on the Drawings and as hereinafter specified.

1.4 UNIT PRICE - MEASUREMENT AND PAYMENT

A. Refer to Section 01 20 00 - Price and Payment Procedures.

B. 50 KVA SINGLE PHASE PAD-MOUNTED TRANSFORMERS INSTALLED OWNER-

FURNISHED, CONTRACTOR INSTALLED):

1. Basis of Measurement: Quantities of 50 KVA Single-Phase Pad-Mounted Transformers will be measured by each unit. The quantity of 50 KVA Single-Phase Pad-Mounted Transformers to be paid for will be determined by actual count.

2. Basis of Payment: Payment for 50 KVA Single-Phase Pad-Mounted Transformers will be made at the unit price stated in the Bid Form. 50 KVA Single-Phase Pad-Mounted Transformers include full compensation for furnishing all labor, materials, tools, equipment, grounding, identification, final connections, and all other ancillary equipment and incidentals, and for doing all the work involved in installing 50 KVA Single-Phase Pad-Mounted Transformers, complete in place, as necessary to complete the Work, as shown on the plans, and as specified in the Contract.

50 KVA 1P PAD-MOUNTED TRANSFORMER INSTALLED (OWNER-FURNISHED,

CONTRACTOR INSTALLED) (33 73 14.01) - PER EACH

C. SINGLE PHASE PAD-MOUNTED TRANSFORMER FOUNDATION INSTALLED

CONTRACTOR-FURNISHED, CONTRACTOR INSTALLED):

1. Basis of Measurement: Quantities of 50 KVA Single-Phase Pad-Mounted Transformer Foundations will be measured by each unit. The quantity of 50 KVA Single-Phase Pad- Mounted Transformer Foundations to be paid for will be determined by actual count.

2. Basis of Payment: Payment for 50 KVA Single-Phase Pad-Mounted Transformer Foundations will be made at the unit price stated in the Bid Form. 50 KVA Single-Phase Pad-Mounted Transformer Foundations include full compensation for furnishing all labor, materials, tools, equipment, precast foundation, compact granular backfill, and all other ancillary equipment and incidentals, and for doing all the work involved in installing 50 KVA Single-Phase Pad-Mounted Transformer Foundations, complete in

33 73 14-3

Starkville, Mississippi Modified by Addendum #1 dated 04/16/2026 place, as necessary to complete the Work, as shown on the plans, and as specified in the Contract.

SINGLE PHASE PAD-MOUNTED TRANSFORMER FOUNDATION INSTALLED

CONTRACTOR-FURNISHED, CONTRACTOR INSTALLED) (33 73 14.02) - PER

EACH

1.5 REFERENCES

A. American National Standards Institute (ANSI):

1. ANSI C37.47 - American National Standard Specifications for Distribution Fuse Disconnecting Switches, Fuse Supports, and Current-Limiting Fuses.

2. ANSI C57.12.25 - Standard Requirements for Pad-Mounted, Compartmental-Type, Self- Cooled, Single-Phase Distribution Transformers with Separable Insulated High-Voltage Connectors; High Voltage: 34500GrdY/19920 Volts and Below; Low Voltage: 240/120 Volts; 167 kVA and Smaller.

3. ANSI C57.12.28 - Pad-Mounted Equipment - Enclosure Integrity.

4. ANSI C57.12.90 - Test Code for Liquid-Immersed Distribution, Power and Regulation Transformers and Guide for Short-Circuit Testing of Distribution and Power Transformers.

5. ANSI C57.91 - Guide for Loading Mineral Oil Transformers.

B. Department of Energy (DOE):

1. 10 CFR Part 431 - Department of Energy - Energy Conservation Program for Commercial Equipment: Distribution Transformers Energy Conservation Standards;

Final Rule.

C. Factory Mutual Engineering and Research (FM):

1. FM P7825 - Approval Guide.

D. Institute of Electrical and Electronics Engineers (IEEE):

1. IEEE 386 - Standard for Separable Insulated Connector Systems for Power Distribution Systems above 600 V.

2. IEEE C57.12.00 - Standard General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers.

3. IEEE C57.106 - Guide for Acceptance and Maintenance of Insulating Oil in Equipment.

E. International Electrical Testing Association (NETA):

1. NETA ATS - Acceptance Testing Specifications for Electrical Power Distribution Equipment and Systems.

33 73 14-4

Starkville, Mississippi Modified by Addendum #1 dated 04/16/2026

F. National Electrical Manufacturers Association (NEMA):

1. NEMA TR1 - Transformers, Regulators and Reactors.

2. NEMA 260 - Safety Labels for Pad-Mounted Switchgear and Transformers Sited in Public Areas.

G. National Fire Protection Association (NFPA):

1. NFPA 70 - National Electrical Code.

1.6 SUBMITTALS

A. Section 26 00 00 - General Provisions for All Electrical and Communications Systems:

Submittal Procedures and Product Requirements.

B. Submit catalog data on all equipment items specified in this section to be utilized on this Project.

C. Sufficient information, clearly presented shall be included to determine compliance with Drawings and Specifications.

D. The specific item proposed and its area of application shall be marked on the catalog cuts.

E. Shop Drawings: Indicate electrical characteristics and connection requirements, outline dimensions, connection and support points, weight, specified ratings and materials.

F. Product Data: Submit electrical characteristics and connection requirements, standard model design tests, and options.

G. Test Reports: Indicate procedures and results for specified factory and field testing and inspection.

1.7 CLOSEOUT SUBMITTALS

A. Project Record Documents: Include copy of manufacturer's certified drawings.

B. Operation and Maintenance Data: Submit maintenance procedures for sampling and maintaining fluid.

1.8 QUALITY ASSURANCE

A. Conform to IEEE C2 and NFPA 70.

1.9 FIELD MEASUREMENTS

A. Verify field measurements are as indicated on Drawings.

33 73 14-5

Starkville, Mississippi Modified by Addendum #1 dated 04/16/2026

1.10 DELIVERY, STORAGE, AND HANDLING

A. Protect from weather and construction traffic, dirt, water, chemical, and mechanical damage, by storing in original packaging.

B. Do not deliver items to project before time of installation. Limit shipment of bulk and multiple-use materials to quantities needed for immediate installation.

1.11 COORDINATION

A. Transformer Pad Foundations: Verify exact dimensions layouts and arrangements of pad mounted transformers, conduits, and conduit fittings prior to forming reinforced concrete pad foundations for pad mounted transformers.

B. Site: Coordinate layout and installation of pad foundations and pad mounted transformers with final arrangement of other utilities, site grading, and surface features as determined in the field.

PART 2 PRODUCTS

2.1 LIQUID-FILLED TRANSFORMERS (OWNER-FURNISHED, CONTRACTOR

INSTALLED):

A. OWNER-FURNISHED MATERIALS: Specifications provided in this section are provided for Contractor’s reference only. Owner will furnish all single phase pad mounted transformers for this project. Refer to Section 01 64 00 and Appendix C.

B. Manufacturers: Ermco, ABB/Hitachi, Cooper Power Systems/Eaton, Howard Industries.

C. Substitutions: Not Permitted.

D. Product Description: ANSI C57.12.34, single phase, loop feed, pad-mounted, self-cooled transformer unit. Transformers shall be new and shall be manufactured in the United States of America.

E. Cooling and Temperature Rise: IEEE C57.12.00, Class ONAN, 65 degrees C, self-cooled.

2.2 SERVICE CONDITIONS

A. Service Conditions:

1. Maximum Ambient Temperature: 104°F.

2. Maximum Interior Design Temperature: 85°F.

3. Maximum Relative Humidity: 95%.

33 73 14-6

Starkville, Mississippi Modified by Addendum #1 dated 04/16/2026

4. Altitude: Sea level.

2.3 RATINGS

A. Capacity: 50 kVA. The kVA rating of the units are continuous at 60 Hz and based on not exceeding either a 65 degree Centigrade average winding temperature rise or an 80 degree Centigrade hot spot conductor temperature rise.

B. Primary Voltage: 12,470GrdY/7,200 V.

C. Taps: Standard primary taps, 2 FCAN and 2FCBN. Taps shall be suitable for de-energized operation only.

D. Secondary Voltage: 120/240 V.

E. Impedance: ANSI C57.12.00 standard impedance, 2.5% maximum.

F. Basic Impulse Level: 95 kV primary, 30 kV secondary.

2.4 CONSTRUCTION

A. The transformer shall be “dead front primary” and “loop feed” design.

B. Transformer cores are to be of silicon steel OR amorphous metal.

C. All hardware, door hinges, pins, nuts, bolts, etc. used to secure cabinet and doors shall be stainless steel. Silicon bronze nuts shall be used on stainless steel bolts.

D. The access doors shall be secured by a silicon bronze captive recessed pentahead bolt in addition to regular pad locking provisions.

E. The tank shall be welded steel construction.

F. Access to the compartment shall be provided by a hinged lift-up hood.

G. The transformer shall be filled with new Cooper FR3 insulating fluid or mineral oil containing less than 1 PPM PCBs.

H. A Fargo vise type connector, part number GC-207 or equivalent split connector, shall be installed in tank grounding lugs.

I. The single phase transformer shall be equipped with a raised locking mechanism located a minimum of 12 inches above ground on the transformer hood rather than on the base sill at ground level. The locking assembly shall include the security bolt and hasp and provide positive latching action. Padlocks shall be able to hang straight down inside the lock pocket to be better protected from the elements.

33 73 14-7

Starkville, Mississippi Modified by Addendum #1 dated 04/16/2026

2.5 TRANSFORMER EFFICIENCIES AND LOSSES

A. Efficiencies and Losses: 10 CFR Part 431. Transformers shall comply with the latest DOE Energy Conservation Standards and Test Procedures, with the allowed tolerances as defined in the DOE Test Procedures.

2.6 BUSHINGS AND TERMINALS

A. The location and arrangement of high-voltage bushings, low-voltage bushings, and parking stands shall be in accordance with Figure 2 of ANSI C57.25 for loop feed systems.

B. Universal high-voltage bushing wells shall be provided. Wells shall be externally clamped and removable to allow for field replacement of bushings without opening the tank.

C. Universal high-voltage, load-break bushing well inserts shall be provided and installed by the manufacturer.

D. Secondary terminations shall be stud type with a minimum stud length of 1.75 inches.

E. Six position secondary connectors shall be installed by the manufacturer. Approved connector is Homac ZVW 4023 EZSL or equivalent. This connector accepts both 5/8 and 1 inch studs, #12 – 350 MCM conductor, 6 outlets plus security light and has a clear lock-on PVC boot.

F. The low-voltage neutral shall be a fully insulated terminal and shall be grounded by an externally removable strap.

2.7 FUSING

A. All transformers shall have “flapper” style bayonet holders and dual element bayonet links in series with a Cooper Power Systems partial range under-oil current-limiting fuse such that the maximum interrupting rating is 50 kA.

B. A drip shield shall be provided below the bayonet holders on the front panel of the unit.

2.8 ACCESSORIES

A. Grounding Lugs: Furnished with one ground pad installed in the transformer compartment.

Ground pads shall be NEMA two-hole type unpainted stainless steel.

B. Pressure Relief: Furnish transformer with pressure relief device in accordance with ANSI C57.12.26.

2.9 NAMEPLATE

A. Furnish stainless steel or anodized aluminum instruction nameplates in accordance with ANSI C57.12.00.

33 73 14-8

Starkville, Mississippi Modified by Addendum #1 dated 04/16/2026

B. Nameplate shall indicate transformer ratings, proper connection and fusing information and total gallons of oil.

C. Nameplate shall also indicate that the PCB content of said transformer is less than one (1) part per million or at time of manufacture gas chromatograph analysis certified non-detectable

PCB.

D. Nameplate shall indicate that the insulating fluid is FR3 containing less than 1 PPM of PCB at the time of manufacture.

E. The date of manufacture shall be stated on the nameplate.

F. The design losses, both load and no-load shall be stated on the nameplate.

G. Nameplates shall be installed on the tank wall inside the low-voltage compartment and on the inside of the low-voltage door.

2.10 LABELING

A. Furnish safety labels in accordance with NEMA 260. Rating of transformer in kVA shall be indicated on the front of transformer tank.

2.11 NOISE

A. Transformer sound levels shall not exceed the values specified in the latest revision of NEMA Publication TR-1.

2.12 FABRICATION

A. Mild steel tank and termination cabinet, conforming to requirements of ANSI C57.12.28.

B. The high and low voltage compartments shall be side by side in a single air-filled compartment. Access to the compartment shall be by means of a hinged, lift up cover. When viewed from the front, the low-voltage compartment shall be on the right. The cover shall be secured by a single, recessed penta-head bolt, with additional provisions for a padlock having a ½” diameter shackle.

C. A recessed, captive, penta-head or hex-head bolt that meets the dimensions per ANSI C57.12.28 shall secure access cover. Provide provisions for locking with hasp type lock.

D. The enclosure integrity of the tank and cabinet shall meet the requirements for tamper resistance set forth in ANSI C57.12.28 including but not limited to the pry test, pull test, and wire probe test.

33 73 14-9

Starkville, Mississippi Modified by Addendum #1 dated 04/16/2026

2.13 FACTORY FINISHING

A. Finish: The coating system shall meet or exceed ANSI C57.12.28 coating system requirements for Pad-Mounted equipment, including the following performance tests:

1. Salt spray test per ASTM B117 / D1654.

2. Cross hatch adhesion test ASTM D3359.

3. Humidity test per ASTM D4585 / D3363.

4. Impact test per ASTM D2794 / B1117.

5. Ultraviolet accelerated weathering (QUV) test per ASTM G154 / D523.

6. Abrasion resistance Taber abraser test per ASTM D4060 / B1117.

B. The bottom of the transformer assembly shall be undercoated with coal tar epoxy which shall extend up around the sides 2 to 3 inches and is to be followed by the finish coating.

C. Finish Color: The exterior of the unit shall be painted Munsell 7GY3.29/1.5 green.

2.14 QUALITY CONTROL:

A. All units shall be tested for the following:

1. No-Load (85°C or 20°C) losses at rated current.

2. Total (85°C) losses at rated current.

3. Percent Impedance (85°C) at rated current.

4. Excitation current (100% voltage) test.

5. Winding resistance measurement tests.

6. Ratio tests using all tap settings.

7. Polarity and phase relation tests.

8. Induced potential tests.

9. Full wave and reduced wave impulse test.

2.15 TRANSFORMER PAD FOUNDATIONS (CONTRACTOR-FURNISHED, CONTRACTOR-

INSTALLED)

A. Product Description: Furnish reinforced pre-cast concrete foundations to suit actual transformer furnished and as shown on the Drawings.

B. Manufacturers: Lee’s Custom Precast or equal.

33 73 14-10

Starkville, Mississippi Modified by Addendum #1 dated 04/16/2026

C. Construction: Pad foundation shall be designed to support the weight of the pad mounted transformers furnished under this Section and to provide a flat, rigid surface for mounting and fastening pad mounted transformer unit.

D. Finish: Pad foundation shall be flat to within 1/16” across top surface. Top edge to be 45° chamfer.

PART 3 EXECUTION

3.1 EXAMINATION

A. Verify all areas are at final grade elevations with Civil Site Work contractor.

B. The top of pad mounted transformer pad foundations shall be 3” above final grade.

Contractor shall coordinate elevations of final landscape and hardscape.

3.2 INSTALLATION

A. Install pad mounted transformers in accordance with IEEE C2, NFPA 70, the manufacturer’s written recommendations and requirements, as shown on the Drawings and as specified in this Section.

B. Install pad mounted transformers on precast concrete pad foundations as shown on the Drawings, plumb and level.

C. Install and terminate primary cables and connect to pad mounted transformers as shown on the Drawings and in accordance with Section 33 71 49.

D. Install elbow arresters on each spare 200-Ampere bushing in accordance with Section 33 71 49.

E. Ground and bond in accordance with Section 33 79 19.

F. Connect service entrance cables.

G. Install pad mounted transformer markers in accordance with Section 26 05 53.

3.3 FIELD QUALITY CONTROL

A. Perform applicable visual and mechanical inspections listed in NETA ATS, Section 7.2.2.1.

B. Perform inspections and tests in accordance with manufacturer’s written instructions.

C. Adjust primary taps so secondary voltage is above and within 2 percent of rated voltage.

33 73 14-11

Starkville, Mississippi Modified by Addendum #1 dated 04/16/2026

3.4 CLEANING

A. Touch up scratched or marred surfaces to match original finish.

END OF SECTION

Appendix C

Starkville, Mississippi Modified by Addendum #1 dated April 16, 2026

APPENDIX C

OWNER-FURNISHED MATERIALS

BILL OF MATERIALS

ELECTRIC DISTRIBUTION MATERIALS AND APPURTENANCES (MATERIAL ONLY)

CONSTRUCTION OF PARKVIEW DEVELOPMENT ELECTRICAL SITE PACKAGE (RE-BID)

COLUMBUS REDEVELOPMENT AUTHORITY

COLUMBUS, MISSISSIPPI

ITEM # ITEM MANUFACTURER & CATLOG NO.

QTY

REQ'D

GROUP #1 (STEEL POLES)

1 30/4 STEEL POLE. REFER TO TECHNICAL SPECIFICATION IN APPENDIX C. VALMONT, MEYERS, GRID STRUCTURES, OR MD HENRY 1 2 45/H1 STEEL POLE. REFER TO TECHNICAL SPECIFICATION IN APPENDIX C. VALMONT, MEYERS, GRID STRUCTURES, OR MD HENRY 9 3 50/H1 STEEL POLE. REFER TO TECHNICAL SPECIFICATION IN APPENDIX C. VALMONT, MEYERS, GRID STRUCTURES, OR MD HENRY 6

GROUP #2 (OVERHEAD UTILITY WIRE)

4 WIRE, COVERED, THHN, #4 COPPER SOUTHWIRE OR EQUAL 20

5 WIRE, COVERED, THHN, #2 COPPER SOUTHWIRE OR EQUAL 40

6 WIRE, COVERED, THHN, #1/0 COPPER SOUTHWIRE OR EQUAL 20

7 WIRE, COVERED, THHN, #2/0 COPPER SOUTHWIRE OR EQUAL 60

8 WIRE, 336.4 KCMIL 18/1 ACSR "MERLIN" SOUTHWIRE OR EQUAL 5,694

9 WIRE, 477.0 kCMIL 18/1 ACSR "PELICAN" SOUTHWIRE OR EQUAL 4,015

10 WIRE, #1/0 AL TRIPLEX "NERTINA" SOUTHWIRE OR EQUAL 250

11 WIRE, #2 AL TRIPLEX "CONCH" SOUTHWIRE OR EQUAL 500

12 WIRE, GROUND, #4 SD BARE SOLID COPPER SOUTHWIRE OR EQUAL 1,000

12 WIRE, GROUND, #2 SD BARE STRANDED COPPER SOUTHWIRE OR EQUAL 300

13 WIRE, WILDLIFE, 15 KV, #4 COPPER SOUTHWIRE OR EQUAL 250

GROUP #3 (DISTRIBUTION CROSSARMS & SUPPORTS)

14 CROSSARM, TANGENT, FIBERGLASS, 8', GRAY PUPI "TB2000-096-04X2", ALFO "FTA20-4-096-A-IP" OR EQUAL 9 15 CROSSARM, TANGENT, FIBERGLASS, 10' GRAY PUPI "TB2000-120-05X2", ALFO "FTA20-6-120-A-IP" OR EQUAL 2 16 CROSSARM, DEADEND, FIBERGLASS, 8', GRAY PUPI "DA3000-096-E2-B7X2", ALFO "FDA30-2-96-EB-IP-FG" OR EQUAL 4 17 CROSSARM, DEADEND, FIBERGLASS, 10', GRAY PUPI "DA3000-120-E2-B9X2", ALFO "FDA30-2-120-EB-IP-FG" OR EQUAL 5

18 PIN, CROSSARM, CLAMP TYPE MPS "J3322Z", HPS "14322P", ALFO "AF3322" 14

19 PIN, CROSSARM, PIN TYPE "MPS "J626Z", HPS "883P", ALFO "AF207" 14

20 CLEVIS, SECONDARY, ONE SPOOL MPS "J251", HPS "C2070024", ALFO "AF1300", ALLIED BOLT "8479" 8 21 PIN, RIDGE, FIBERGLASS, 2" x 18" MPS "G1HDR118AS1", HPS "RPH181", ALFO "F1CS-HV-V18-RHP1" 14 22 PIN, HORIZONTAL, FIBERGLASS, 1-1/2" x 18" MPS "G1MDA118AS1", HPS "1SBM18H1", ALFO "F1CS-MV-18-BHP-1" 1 23 FIBERGLASS EXTENSION LINK, CLEVIS-EYE, 12" MPS "GTCE15-12R", HPS "GS16012CE", ALFO "FGS16-12CT" 18

GROUP #4 (DISTRIBUTION INSULATORS)

24 INSULATOR, DEADEND, POLYMER, 35 KV MPS "DS35M", PPC "PDEI-35", GAMMA "PS035", ALFO "DEI-35" 60

25 INSULATOR, PIN TYPE, 15 KV PPC "366-S", VICTOR "6R", GAMMA "6183-R" 48

26 INSULATOR, SPOOL PPC "5101", VICTOR "VI 2612", GAMMA "8442-70" 24

GROUP #5 (DISTRIBUTION CONDUCTOR ACCESSORIES)

27 CLAMP, DEADEND, #336.4 KCMIL - 954 kCMIL ACSR MPS "HDSO-116-2", HPS "ADEZ116N", ALFO "DES-HDSO-116" 70 28 CLAMP, DEADEND, #4/0 ACSR - 556 KCMIL ACSR MPS "ASO-858-2-N", HPS "ADEZ88N", ALFO "DES-ASO-858-2-N" 10 29 CLAMP, HOTLINE, #8 - #2/0 CU MPS "C-1520", HPS "BC20", ALFO "AF-BC20", R1MA "BHLC-100" 25

30 CLAMP, STIRRUP, #6- #2/0 ACSR MPS "L8-0-N", HPS "AHLS022019E" 25

CONSTRUCTION OF PARKVIEW DEVELOPMENT ELECTRICAL SITE PACKAGE (RE-BID)

COLUMBUS REDEVELOPMENT AUTHORITY

COLUMBUS, MISSISSIPPI

ITEM # ITEM MANUFACTURER & CATLOG NO.

QTY

REQ'D

31 CONNECTOR, MULTI TAP UTILICO "PTT4-250", BLACKBURN "ABP440", POLARIS "PPT250-4" 21

32 SERVICE GRIP, #2 AL TRIPLEX PREFORMED "SG4504" OR EQUAL 5

33 SERVICE GRIP, #1/0 AL TRIPLEX PREFORMED "SG4506" OR EQUAL 10

34 CONNECTOR, COMPRESSION, #4-6 CU-#4-6 CU BLACKBURN "CF-44-1" OR EQUAL 50

35 CONNECTOR, COMPRESSION, #336.4 KCMIL ACSR-#2-#6 CU BURNDY "YHN-500", BLACKBURN "WR699" OR EQUAL 50

36 CONNECTOR, COMPRESSION, #2 CU-#4 CU BLACKBURN "CF-44-1" OR EQUAL 10

37 CONNECTOR, COMPRESSION, #4/0-477.0 KCMIL ACSR-#4/0-477.0 kCMIL ACSR BURNDY "YHN-525" OR BLACKBURN "WR885" 30

38 CONNECTOR, COMPRESSION, #6 CU- GUY STRAND BURNDY "UCK1UL", BLACKBURN "K1" 10

39 TOP TIE, 477.0 ACSR PLP UTF-1211 50

40 ALUMINUM TIE WIRE, #4 (25 LB SPOOL) PRIORITY WIRE & CABLE "AL-TIEWIRE-4" OR EQUAL 1

TERMINAL, COMPRESSION, ALUMINUM OR COPPER, CABLE TO NEMA 2 HOLE PAD,

477/0 KCMIL ACSR SEFCOR "AL-90-2B" OR EQUAL 6

GROUP #6 (DISTRIBUTION SWITCHES & ARRESTERS)

SWITCH, LOADBREAK, THREE POLE SIDEBREAK, 25 KV, 600 AMPERES, UNITIZED,

HOOKSTICK TYPE, COMPLETE WITH ALL MOUNTING HARDWARE S&C "147442R4-H-A2", HPS "AR113FHHL" 1

43 SWITCH, FUSED CUTOUT, 15 KV, 100 AMPERE MPS "SC15HG116-D", HPS "CP710114PB", ALFO "CSG15-100A-110-CB-16KA" 26 44 ARRESTER, SURGE, DISTRIBUTION CLASS, 10 KV MPS "ZHP010-0C00100", HPS "2137097324", ALFO "AHD10B-1GA-4X1-4X" 16 45 ARRESTER, SURGE, RISER CLASS, 10 KV MPS "ZRP010-0C00100", HPS "2216097324", ALFO "ARP10B-1GA-4X1-4X" 10

46 FUSE, EXPULSUION, 15 KV, 65 AMP TYPE "T" HPS "M65T23" OR EQUAL 10

47 FUSE, EXPULSUION, 15 KV, 3 AMP TYPE "K" HPS "M3K23" OR EQUAL 3

48 FUSE, EXPULSUION, 15 KV, 6 AMP TYPE "K" HPS "M6K23" OR EQUAL 2

49 FUSE, EXPULSUION, 15 KV, 10 AMP TYPE "K" HPS "M10K23" OR EQUAL 2

GROUP #7 (GUYING)

50 3/8" H.S. STEEL GUY STRAND, FURNISH ON 250' COILS NATIONAL STRAND, AMERICAN WIRE GROUP OR EQUAL 250 51 7/16" E.H.S. STEEL GUY STRAND, FURNISH ON 250' COILS NATIONAL STRAND, AMERICAN WIRE GROUP OR EQUAL 250 52 ANCHOR, POWER SCREW, 1-1/2" SS, 8/10" DOUBLE HELIX MPS "D6632", HPS "012642AE" 5 53 SQUARE SHAFT EXTENSION, 1-1/2" x 5' MPS "D6620-U", HPS "12656" 10

54 GUY TERMINATION, TWINEYE, 1-1/2" SS MPS "D6604US", HPS "C1020024" 5

GUY STRAIN INSULATOR, FIBERGLASS, CLEVIS- ROLLER, 15,000 LB RATING, 144"

LENGTH MPS "GCC15-144R", HPS "GS16144CC1", ALFO "FGS16-144CR" 2

GUY STRAIN INSULATOR, FIBERGLASS, CLEVIS- ROLLER, 21,000 LB RATING, 144"

LENGTH MPS "GCC21-144R", HPS "GS21144CC1", ALFO "FGS21-144CR" 4

57 GUY GRIP, 3/8", PREFORMED PLP "GDE-1107", HPS "FWDE1107" 50

58 GUY GRIP, 7/16", PREFORMED PLP "GDE-1108", HPS "FWDE1108" 25

59 POLE EYE PLATE, WITHOUT CLEATS, 3" BOLT SPACING REQUIRED MPS "MGA-345N", ALLIED BOLT "22002" 25

CONSTRUCTION OF PARKVIEW DEVELOPMENT ELECTRICAL SITE PACKAGE (RE-BID)

COLUMBUS REDEVELOPMENT AUTHORITY

COLUMBUS, MISSISSIPPI

ITEM # ITEM MANUFACTURER & CATLOG NO.

QTY

REQ'D

60 GUY THIMBLE, CLEVIS TYPE MPS "CT88", HPS "TC1", ALFO "AFCT88" 25

61 GUY MARKER, YELLOW PLASTIC, 8' LENGTH PLP "PG6500SC", MPS "J1493Y" 30

GROUP #8 (GROUNDING)

62 GROUND ROD, COPPER CLAD, 5/8" X 8' ERICO "615883" OR EQUAL 16

63 CLAMP, GROUND ROD, BRONZE, 5/8" ERICO "HDC58R", BURNDY "GRC58" OR EQUAL 16

64 GROUND ROD, COPPER CLAD, 3/4" X 10' ERICO "615883" OR EQUAL 17

65 CONNECTOR, COMPRESSION, 3/4" ROD - #2 CU BURNDY "YSHG3429" OR EQUAL 17

66 CONNECTOR, COMPRESSION, #4/0-#2 CU - #4/0-#2 CU BURNDY "YH2929" OR EQUAL 75

67 TRANSFORMER TANK GROUND LUG, #8-#2/0 CU, 1/2"-13 THREAD MPS "TG-820", HPS "GTCL34A" OR EQUAL 50

GROUP #9 (OVERHEAD TRANSFORMERS)

TRANSFORMER, CONVENTIONAL, SINGLE PHASE, 15 KVA, 12470Y/7200-120/240

VOLTS. REFER TO TECHNICAL SPECIFICATION IN APPENDIX D. ABB/HITACHI, ERMCO, EATON, POWER PARTNERS, HOWARD 3

TRANSFORMER, CONVENTIONAL, SINGLE PHASE, 25 KVA, 12470Y/7200-120/240

VOLTS. REFER TO TECHNICAL SPECIFICATION IN APPENDIX D. ABB/HITACHI, ERMCO, EATON, POWER PARTNERS, HOWARD 2

TRANSFORMER, CONVENTIONAL, SINGLE PHASE, 50 KVA, 12470Y/7200-120/240

VOLTS. REFER TO TECHNICAL SPECIFICATION IN APPENDIX D. ABB/HITACHI, ERMCO, EATON, POWER PARTNERS, HOWARD 2

GROUP #10 (HARDWARE)

71 BOLT, MACHINE, 5/8" X 12" MPS "J8812", HPS "8812", ALFO "AF8812" 75

72 BOLT, MACHINE, 5/8" X 14" MPS "J8814", HPS "8814", ALFO "AF8814" 75

73 BOLT, MACHINE, 5/8" X 16" MPS "J8816", HPS "8816", ALFO "AF8816" 50

74 EYEBOLT, 5/8" X 12" MPS "J9412", HPS "29962", ALFO "AF9412" 25

75 EYEBOLT, 5/8" X 14" MPS "J9414", HPS "29964", ALFO "AF9414" 25

76 EYEBOLT, 5/8" X 16" MPS "J9416", HPS "29966", ALFO "AF9416" 25

77 EYENUT, 5/8" MPS "J1092", HPS "6502", ALFO "AF1092", ALLIED BOLT "5876" 25

78 LOCKNUT, MF, 3/4" MPS "J8583", HPS "3512", ALFO, "AF8583", ALLIED BOLT "22010" 25 79 LOCKNUT, MF, 5/8" MPS "J8584", HPS "3513", ALFO "AF8584", ALLIED BOLT "22011" 200 80 WASHER, SQUARE, 2-1/4", 11/16" HOLE MPS "J1075", HPS "6813", ALFO "AF1075", ALLIED BOLT "11500" 200 81 WASHER, 3" SQUARE, CURVED, 11/16" HOLE MPS "J113", HPS "682312", ALFO "AF113", ALLIED BOLT "233" 50 82 WASHER, 3" SQUARE, CURVED, 13/16" HOLE MPS "J6823", HPS "682312", ALFO "AF6823", ALLIED BOLT "244" 50

GROUP #11 (EQUIPMENT BRACKETS)

83 BRACKET, EQUIPMENT, SINGLE PHASE, FIBERGLASS MPS "G1MA0HBDDB", HPS "1SBM18CTB", ALFO "F1CA-MV-H18-D3-H" 17 84 BRACKET, EQUIPMENT, THREE PHASE, FIBERGLASS MPS "G3MA014824DDB", HPS "3SBM4818CTB", ALFO "F3CA-MV-H4824-D3-H" 1

BRACKET, TRANSFORMER CLUSTER MOUNT, COMPLETE WITH MOUNTING

HARDWARE MPS "C15M39", HPS "C15M3-9", ALFO "15M3-9" 1

CONSTRUCTION OF PARKVIEW DEVELOPMENT ELECTRICAL SITE PACKAGE (RE-BID)

COLUMBUS REDEVELOPMENT AUTHORITY

COLUMBUS, MISSISSIPPI

ITEM # ITEM MANUFACTURER & CATLOG NO.

QTY

REQ'D

GROUP #12 (UTILITY UNDERGROUND PRIMARY CABLE WIRE)

86 WIRE, #4/0 ALUMINUM 15KV UD CABLE

OKONITE "162-23-3081", OR EQUAL BY PRYSMIAN, KERITE, SOUTHWIRE -

FURNISHED ON THREE (3) 830 FOOT REELS AND ONE (1) 3,200 FOOT REEL 5,690

GROUP #13 (UTILITY UNDERGROUND SECONDARY CABLE WIRE)

CABLE, UNDERGROUND TRIPLEX, #4/0 ALUMINUM, RUGGEDIZED OR HI-SCORE,

SWEETBRIAR, PACKAGED ON THREE (3) 1000' REELS SOUTHWIRE OR EQUAL 3,000

GROUP #14 (UNDERGROUND CONDUCTOR ACCESSORIES)

88 200A 15 KV 3-WAY CABLE JUNCTION ENCLOSURE HOWARD "4584-268-770-4YY" OR EQUAL 2 89 200A 15 KV KV 3-WAY CABLE JUNCTION ENCLOSURE BOX PAD CONCAST "FC-23-85-32-1880" OR EQUAL 2 90 15 KV 200A LOADBREAK JUNCTION BARS, THREE-POSITION 3M "215J3B", ELASTIMOLD "164J3-5", OR EQUAL 3 91 15 KV 200A FEEDTHRU PARKING STAND, 2-WAY ELASTIMOLD "164FT", EATON "LPF215H", OR EQUAL 1

92 200A 15 KV LOADBREAK ELBOW TERMINATION, #4/0 AL WITH CABLE SHIELD

3M "215LB508B", ELASTIMOLD "162LR-C5270-S", EATON "LE215-CC-09-CS" OR

EQUAL 43

93 BUSHING CAP, 15 kV, 200A LOADBREAK 3M "215LBI", ELASTIMOLD "167DRG", OR EQUAL 6

94 CABLE TERMINATOR, 15 KV, FOR #4/0 AL 15 KV 220 MIL JCN CABLE

3M “7652-S-4(L)” (TERMINATOR), CROSS ARM MOUNTING BRACKET "MB-4",

AND “SC0030”(STEM CONNECTOR), OR EQUAL 13

95 10KV ELBOW SURGE ARRESTER 3M "215SA10", ELASTIMOLD "167ESA-10", EATON "3238018C10M", OR EQUAL 1

GROUP #15 (PAD MOUNTED TRANSFORMERS)

96 50 KVA 1P PAD-MOUNTED TRANSFORMER ERMCO, HOWARD, OR HITACHI 13

GROUP #17 (SECONDARY PEDESTALS)

SECONDARY PEDESTAL, BASE & COVER, WITH HEX HEAD BOLTS & 3-350 MCM

CONNECTORS PENCELL "AG18-L350" 16

GROUP #18 (CONDUIT)

98 CONDUIT, CABLE RISER, SCHEDULE 80 PVC, 2" CARLON, CANTEX, ALLIED TUBE & CONDUIT, OR EQUAL 330

99 CONDUIT STANDOFF BRACKET AND T-SLOT BAR, ALUMINUM HPS "C6CSO24" 32

100 CONDUIT STRAP, 2" HPS "CSTK2", ALFO "STK2", OR EQUAL 44

NOTE: MAXIMUM REEL SIZE SHALL BE 72" FLANGE HEIGHT x 56" OUTSIDE WIDTH. ACTUAL CABLE LENGTHS PER REEL SHALL NOT BE LESS THAN SPECIFIED OR MORE 5% GREATER

SINGLE PHASE Pad-Mounted TranSformer FOUNDATION Installed CONTRACTOR-FURNISHED, CONTRACTOR INSTALLED) (33 73 14.02) - PER EACH