W912QR25RA023_Plans-0002.pdf

PDF 6 MB Posted May 12, 2025

Attached to: Construction of a Microgrid System at the Conroe Army Reserve Center (ARC) in Conroe, TX
Solicitation number: W912QR25RA023
Issued by: Department of the Army Corps of Engineers Engineering District Louisville

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Written by GovTribe AI · May 12, 2025

These are detailed engineering design plans for a 750 kWdc Microgrid system to be constructed at the Conroe Army Reserve Center in Conroe, Texas. The project includes multiple key components: solar photovoltaic (PV) carport structures, generator units, interconnection switchgear, electrical distribution systems, and associated infrastructure. Specific planned elements include:

The microgrid design encompasses eight PV carport structures with varying power outputs ranging from 61 kW to 102.48 kW, two generator units (one 340 kW prime-rated generator), a microgrid control system, electrical interconnection switchgear, and modifications to the existing electrical distribution system. The project aims to provide energy resiliency and security for critical operations by establishing a microgrid network capable of operating in grid-connected, islanded, and blackout conditions. The design incorporates advanced power management capabilities, including automatic transitions between power modes, load balancing, and the ability to integrate renewable and traditional power generation sources.

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Other files

File	Type	Posted
W912QR25RA023_Specs-0002.pdf	PDF	May 12, 2025
W912QR25RA023-0001.pdf	PDF	Apr 23, 2025
W912QR25RA023_Specs_V1-0000.pdf	PDF	Mar 31, 2025
W912QR25RA023_Specs_V2-0000.pdf	PDF	Mar 31, 2025
W912QR25RA023_Plans-0000.pdf	PDF	Mar 31, 2025

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US Army Corps of Engineers

GENERAL NOTES

OR CL

OR PL

SQUARE

DIAMETER OR ROUND

CENTERLINE

PROPERTY LINE

OPENING OR DEPRESSION IN SLAB OR WALL

OPENING WITH GRATING COVER (PLAN)

ROUGHENED CONSTRUCTION JOINT

CONSTRUCTION JOINT (KEYWAY)

CONSTRUCTION JOINT (KEYWAY) WITH WATERSTOP

MASONRY CONTROL JOINT (IN PLAN)

MASONRY EXPANSION JOINT (IN PLAN)

GUARDRAIL/HANDRAIL

ROUGHENED CONSTRUCTION JOINT WITH WATERSTOP

OPENING WITH CHECKERED PLATE COVER (PLAN)

SAND, CMU, PLASTER

ROCK

EARTH

CRUSHED ROCK

CONCRETE

GRANULAR FILL

GENERAL MATERIALS LEGEND

DIMENSIONS AND SCALE

VIEW MARKERS GENERAL SYMBOLS

EL 100'-0"

REVISION IDENTIFICATION SYMBOL:

THE NUMBER IN THE TRIANGLE INDICATES THE REVISION

NUMBER IDENTIFIED. THE LETTER "A" IMMEDIATELY TO THE

RIGHT OF THE TRIANGLE INDICATES THE REVISION IS PART OF

A CONTRACT ADDENDUM. WHEN REVISIONS INVOLVE LESS THAN

ENTIRE DRAWING, PRINCIPAL ASPECTS OF REVISIONS ARE "CLOUDED".

COLUMN IDENTIFICATION:

SUBSTITUTE LETTER OR NUMBER FOR ASTERISK

OUTLINE OF FUTURE OBJECT

OUTLINE OF NEW OR RELOCATED OBJECT

EXISTING OBJECT TO BE REMOVED OR RELOCATED

EXISTING OBJECT LINE

MATCH LINE

MATERIAL BREAK LINE

SURFACE BREAK LINE

HIDDEN LINE

CENTER LINE

ELEVATION DESIGNATION

REINFORCING BARS IN CONCRETE

WELDED WIRE FABRIC

NON-FERROUS METAL

GLASS (ELEVATION)

STEEL (IN SECTION)

BATT INSULATION

RIGID INSULATION

PLYWOOD

ROUGH WOOD (IN SECTION)

BRICK IN SECTION

1 A

DIMENSIONS AND/OR ELEVATIONS MARKED THUS ( ) ARE APPROXIMATE. OBTAIN FINAL DIMENSIONS FOR

CONSTRUCTION FROM THE CONTRACTING OFFICER.

DIMENSIONS AND/OR ELEVATIONS MARKED THUS ( ) ARE ASSUMED AND SHALL BE VERIFIED OR MODIFIED AS REQUIRED BY THE CONTRACTOR TO SUIT EQUIPMENT FURNISHED. FINAL DIMENSIONS ARE SUBJECT TO THE

REVIEW OF THE CONTRACTING OFFICER.

DIMENSIONS AND/OR ELEVATIONS MARKED THUS (+/-) MUST BE VERIFIED IN THE FIELD BY THE CONTRACTOR.

DIMENSIONS ARE GENERALLY TO SCALE, BUT SHOULD NOT BE SCALED. USE DIMENSIONS SHOWN. NTS (NOT

TO SCALE) IS SHOWN ONLY WHERE DIMENSION IS OBVIOUSLY OUT OF SCALE.

NUMERIC SCALE VALUES (1/4"=1'-0", ETC) APPLY ONLY AT FULL SIZE.

1. ALL SYMBOLS AND ABBREVIATIONS SHOWN ON THIS LEGEND MAY NOT APPEAR ON

THIS SET OF DRAWINGS.

2. WORK MUST COMPLY WITH USACE EM 385-1-1 SAFETY AND HEALTH REQUIREMENTS.

X101

DESIGNATES LOCATION

OF DETAIL

DESIGNATES DIRECTION FROM WHICH

PLAN OR ELEVATION IS VIEWED

DESIGNATES CUTTING

PLANE OF SECTION

DRAWING NUMBER(S)

ON WHICH VIEW IS

CALLED OUT

VIEW IDENTIFICATION

NUMBER

1. CONTRACTOR MUST RETAIN SERVICES OF A REGISTERED PROFESSIONAL ENGINEER

(DELEGATE ENGINEER) TO DESIGN AND PROVIDE DRAWINGS AND CALCULATIONS FOR THE

COMPONENTS DELEGATED BY THE STRUCTURAL ENGINEER OF RECORD.

2. WHERE NOTED ON CONSTRUCTION DOCUMENTS AND AS INDICATED BELOW, CONTRACTOR

MUST RETAIN SERVICES OF A DELEGATED ENGINEER TO PROVIDE SPECIALTY ENGINEERING

SERVICES FOR STRUCTURAL BUILDING COMPONENTS. COMPONENTS INCLUDE, BUT ARE NOT

LIMITED TO FOLLOWING:

A. CARPORT PV STRUCTURES AND ANCHORAGE.

B. CONNECTIONS FOR STRUCTURAL AND SUPPLEMENTAL STEEL NOT DETAILED ON THESE

DRAWINGS.

C. SWITCHGEAR ENCLOSURE, AND ASSOCIATED STAIRS, PLATFORMS, LADDERS AND

ANCHORAGE.

D. ENGINE-GENERATOR ENCLOSURE, SUPPORTS AND ANCHORAGE.

E. EQUIPMENT AND UTILITY SUPPORTS AND ANCHORS

F. STEEL HANDRAIL AND GUARDRAIL

G. TEMPORARY SHEETING, SHORING, SUPPORTS, SOIL RETENTION SYSTEMS AND

DEWATERING SYSTEMS

H. DRILLED PIER FOUNDATIONS (IF CARPORT PV COLUMN BASE LOADS EXCEED DRILLED PIER

DESIGN LOADS INDICATED ON DRAWINGS).

J. LIGHTNING PROTECTION SYSTEM.

3. DELEGATE ENGINEER MUST BE A REGISTERED PROFESSIONAL ENGINEER LICENSED IN THE

STATE OF TEXAS WITH A MINIMUM OF FIVE (5) YEARS OF EXPERIENCE IN DESIGN FOR SPECIFIC

COMPONENT.

4. DELEGATE ENGINEER MUST BE THE ENGINEER OF RECORD FOR THE DELEGATED COMPONENTS

AND MUST SUBMIT SIGNED AND SEALED CALCULATIONS AND DRAWINGS FOR REVIEW BY THE

RESIDENT OFFICE.

5. CALCULATIONS AND DRAWINGS SUBMITTED BY THE DELEGATE ENGINEER FOR REVIEW MUST

INCLUDE CLEARLY DEFINED DESIGN CRITERIA, DESIGN CALCULATIONS, CODE COMPLIANCE,

DETAILS AND LAYOUTS, AND FABRICATION DRAWINGS AND PROCEDURES.

6. REVIEW OF CALCULATIONS AND DRAWINGS SUBMITTED BY THE DELEGATE ENGINEER TO THE

RESIDENT OFFICE WILL BE LIMITED TO THE VERIFICATION THAT THE DELEGATE ENGINEER HAS UTILIZED THE DESIGN CRITERIA SPECIFIED AND HAS UNDERSTOOD THE INTENT OF THE DESIGN.

THE RESIDENT OFFICE WILL NOT MAKE A DETAILED CHECK OF THE CALCULATIONS AND DESIGN

PROCESSES UTILIZED BY THE DELEGATE ENGINEER. THE DELEGATE ENGINEER MUST BE

RESPONSIBLE FOR THE STRUCTURAL INTEGRITY OF THE SPECIALTY COMPONENTS AND

ATTACHMENT TO STRUCTURES AND FOUNDATIONS.

7. FABRICATION OF DELEGATED COMPONENTS MUST NOT COMMENCE UNTIL RESIDENT OFFICE

HAS REVIEWED AND RETURNS SUBMITTAL BACK TO CONTRACTOR, AND SUBMITTAL IS MARKED

"APPROVED".

8. REFER TO SECTION 01 33 00 FOR ADDITIONAL INFORMATION REGARDING SUBMITTAL

PROCEDURES AND REQUIREMENTS.

DELEGATED DESIGN REQUIREMENTS

AND SUBMITTALS

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SCALE: 1/2" = 1'-0"

MICROGRID INTERCONNECTION SWITCHGEAR ENCLOSURE LIFE SAFETY PLANA1 0 2' 4'1'

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US Army Corps of Engineers

NOTES:

1. EXIT SIGNS AND FIRE EXTINGUISHER LOCATIONS ARE

SHOWN FOR INFORMATION ONLY. REFER TO

ELECTRICAL AND ARCHITECTURAL DRAWINGS FOR

EXACT LOCATIONS.

1. PROJECT NAME

MICROGRID DESIGN, 750KWDC CONROE ARMY RESERVE CENTER, CONROE, TEXAS.

LEGEND:

EXIT SIGN

FIRE EXTINGUISHER

OCCUPANCY LOAD

OCCUPANCY LOAD FACTOR

EXIT NUMBER

TRAVEL DISTANCE

OCCUPANCY CLASSIFICATION

[X/Y]

PERSON/SQUARE FEET

E-0

IBC NFPA 101

UTILITY AND MISCELLANEOUS GROUP U

(CHAPTER 312)

SPECIAL-PURPOSE INDUSTRIAL

(CHAPTER 40)

6. CONSTRUCTION TYPE (IBC CHAPTER 6 AND NFPA 101)

CONSTRUCTION TYPE: IIB / II (000)

12. MEANS OF EGRESS (NFPA 101, NFPA 1)

THE SWITCHGEAR BUILDING WILL BE DESIGNED TO MEET APPLICABLE LIFE SAFETY

CODE REQUIREMENTS FOR OCCUPANT SAFETY AND EGRESS.

EXITS MUST COMPLY WITH THE REQUIREMENTS OF NFPA 101 SECTION 7.3.3. ALL

DOORS MUST BE SIZED AT 0.2 INCHES PER OCCUPANT, NOT LESS THAN 32 INCHES,

USING THE EXIT.

EGRESS LIMITATIONS WILL BE SUBJECT TO THE REQUIREMENTS OF NFPA 101 TABLE

A.7.6. EXITS MUST BE PROVIDED SUCH THAT EXITS ARE AT LEAST ONE-HALF THE

DIAGONAL DISTANCE OF THE BUILDING APART FORM NFPA 101 SECTION 7.5.1.3.2.

13.OCCUPANT LOAD AND EGRESS CAPACITY CALCULATION

BASED ON AN OCCUPANT LOAD OF 2 PERSONS AND A COMMON PATH OF TRAVEL OF

LESS THAN 50 FEET, ONE EXIT HAVING A MINIMUM CLEAR WIDTH OF 32 INCHES IS

REQUIRED FOR THE SWITCHGEAR BUILDING PER NFPA 101 SECTIONS 40.2.4. TWO

EXITS EACH WITH A CLEAR WIDTH OF 40 INCHES ARE PROVIDED FROM THE

SWITCHGEAR BUILDING.

14.PORTABLE FIRE EXTINGUISHERS (NFPA 10, NFPA 101)

IN ACCORDANCE WITH UFC 3-600-01 SECTION 9-17 AND NFPA 101 SECTION 40.3.5, FIRE

EXTINGUISHERS ARE NOT REQUIRED FOR THE SWITCHGEAR BUILDING. HOWEVER, AS

A BEST PRACTICE, FIRE EXTINGUISHERS WILL BE PROVIDED IN THE SWITCHGEAR

BUILDING IN ACCORDANCE WITH NFPA 10.

15.DISCHARGE FROM EXITS (NFPA 101)

EXIT DISCHARGE MUST BE IN ACCORDANCE WITH SECTION 7.7. EXITS MUST

TERMINATE DIRECTLY AT A PUBLIC WAY OR AT AN EXTERIOR EXIT DISCHARGE. EXITS

ARE PERMITTED TO DISCHARGE INTO OPEN COURTS OR YARDS.

16.ILLUMINATION OF MEANS OF EGRESS (NFPA 101)

MEANS OF EGRESS MUST BE ILLUMINATED IN ACCORDANCE WITH SECTION 7.8.

17.EMERGENCY LIGHTING (NFPA 101)

IN ACCORDANCE WITH NFPA 101 SECTION 40.2.9, EMERGENCY LIGHTING IS ONLY

REQUIRED FOR NORMALLY OCCUPIED STRUCTURES. HOWEVER, AS A BEST

PRACTICE, EMERGENCY LIGHTING WILL BE PROVIDED IN ACCORDANCE WITH SECTION

7.9.

18.MARKINGS OF MEANS OF EGRESS (NFPA 101)

MEANS OF EGRESS, OTHER THAN MAIN EXTERIOR EXIT DOORS THAT OBVIOUSLY AND

CLEARLY ARE IDENTIFIABLE AS EXITS, MUST HAVE SIGNS AT EXITS THAT ARE READILY

VISIBLE FROM ANY DIRECTION OF EXIT ACCESS IN ACCORDANCE WITH NFPA 101

SECTION 7.10. EXIT ACCESS MUST BE MARKED IN ALL CASES WHERE THE EXIT OR WAY

TO REACH THE EXIT IS NOT READILY APPARENT.

19. ROOF ACCESS (UFC 3-600-01, SECTION 10-4)

FIRE DEPARTMENT ROOF ACCESS IS NOT REQUIRED FOR THE SWITCHGEAR

BUILDING AS THE BUILDINGS IS LESS THAN FOUR STORIES.

20. FIRE DEPARTMENT ACCESS (UFC 3-600-01)

PER UFC 3-600-01 SECTION 9-1.1, ALL-WEATHER GROUND ACCESS IS NOT

REQUIRED FOR BUILDINGS THAT ARE LESS THAN 5,000 SQUARE FEET OR LESS

THAN 2 STORIES IN HEIGHT. THEREFORE, ALL-WEATHER GROUND ACCESS IS

NOT REQUIRED FOR THE SWITCHGEAR BUILDING.

21. FIRE PROTECTION SYSTEMS (UFC 3-600-01)

IN ACCORDANCE WITH UFC 3-600-01 SECTION 9-7.2.1.1, AUTOMATIC SPRINKLER

SYSTEMS ARE PERMITTED TO BE OMITTED FROM SINGLE-STORY, TYPE II

CONSTRUCTION FACILITIES LESS THAN 15,000 FT2. THEREFORE, THE

SWITCHGEAR BUILDING IS NOT REQUIRED TO BE PROTECTED WITH AN

AUTOMATIC SPRINKLER SYSTEM.

22. FIRE ALARM SYSTEM (UFC 3-600-01, NFPA 101)

IN ACCORDANCE WITH UFC 3-600-01 SECTION 9-18 AND NFPA 101 SECTION

40.3.4, FIRE ALARM AND DETECTION SYSTEMS ARE NOT REQUIRED FOR

INDUSTRIAL OCCUPANCIES WITH A TOTAL OCCUPANT LOAD OF LESS THAN 100

PERSONS. THEREFORE, THE SWITCHGEAR BUILDING IS NOT REQUIRED TO BE

PROTECTED BY A FIRE ALARM AND DETECTION SYSTEM. HOWEVER, AT THE

REQUEST OF THE CLIENT, A FIRE ALARM SYSTEM IS REQUIRED FOR THE

SWITCHGEAR BUILDING. PROVIDE IN ACCORDANCE WITH FA SERIES

DRAWINGS.

23. GENERATOR ENCLOSURE (UFC 3-600-01, NFPA 37)

IN ACCORDANCE WITH NFPA 37 SECTION 4.1.1 AND 4.1.4, THE NATURAL GAS

FUEL FIRED ENGINES SHALL BE SITUATED SO THAT THEY ARE READILY

ACCESSIBLE FOR MAINTENANCE, REPAIR, AND FIREFIGHTING, AND THEY MUST

BE LOCATED A MINIMUM 5 FT FROM ANY OPENINGS IN THE WALLS OF

STRUCTURES. A FIRE ALARM AND FIRE SUPPRESSION SYSTEM ARE NOT

REQUIRED FOR PROTECTION OF THE ENGINE GENERATOR ENCLOSURES.

ALLOWABLE AREA AND HEIGHT CALCULATIONS SWITCHGEAR BUILDING:

NON-SPRINKLERED TYPE IIB CONSTRUCTION (IBC TABLES 504.3, 504.4, & 506.2)

OCCUPANCY

CLASSIFICATION

ALLOWABLE

AREA

(SQ. FT.)

ALLOWABLE

HEIGHT (FT.)

ALLOWABLE

NUMBER OF

STORIES

ACTUAL AREA,

HEIGHT, & STORIES

UTILITY AND

MISCELLANEOUS

GROUP U

8,500 55 2 504 SQ.FT.

12FT / 1 STORY

INTERIOR FINISH CLASSIFICATION: NFPA 101, TABLE A.10.2.2

OCCUPANCY EXIT ENCLOSURE EXIT ACCESS

CORRIDORS

OTHER ROOMS AND

ENCLOSED SPACES

INDUSTRIAL

CLASS A OR B CLASS A, B, OR C CLASS A, B, OR C

CLASS I OR II CLASS I OR II N/A

SWITCHGEAR BUILDING OCCUPANCY LOAD: UFC 3-600-01 TABLE 10-1 AND NFPA 101

TABLE 7.3.1.2

USE

OCCUPANT LOAD

FACTOR (FT²/PERSON) AREA (FT²) OCCUPANT LOAD

UTILITY 500 540 2

EGRESS LIMITATIONS NON-SPRINKLERED BUILDING: NFPA 101 TABLE A.7.6

OCCUPANCY COMMON PATH (FT.) DEAD END (FT.) TRAVEL DISTANCE (FT.)

SPECIAL PURPOSE

INDUSTRIAL 50 50 300

SWITCHGEAR BUILDING EXIT CAPACITY: NFPA 101, 7.2.1.2.3

EXIT NUMBER

REQUIRED

WIDTH (INCHES)

ACTUAL CLEAR

WIDTH (INCHES)

OCCUPANT

CAPACITY

ACTUAL

CAPACITY

E-1 32 40 200 1

E-2 32 40 200 1

36'

2[1/500]

EXIT SIGN/EMERGENCY

LIGHTING UNIT (TYP)

HVAC

UNIT 1

HVAC

UNIT 2

POWER

PANEL LP-1

AUX.

XFMR

T-AUX

POWER

PANEL PP-1

4. APPLICABLE CODES

· UFC 1-200-01, DOD BUILDING CODE, 1 SEPTEMBER 2022

· UFC 3-600-01, FIRE PROTECTION ENGINEERING FOR FACILITIES, 8 AUGUST 2016 WITH

CHANGE 6, 6 MAY 2021

· NFPA 1, FIRE CODE, 2021 EDITION

· NFPA 10, STANDARD FOR PORTABLE FIRE EXTINGUISHERS, 2022 EDITION

· NFPA 37, STANDARD FOR THE INSTALLATION AND USE OF STATIONARY COMBUSTION

ENGINES AND GAS TURBINES 2021 EDITION

· NFPA 70, NATIONAL ELECTRIC CODE, 2020 EDITION

· NFPA 72 NATIONAL FIRE ALARM AND SIGNALING CODE, 2022 EDITION

· NFPA 101, LIFE SAFETY CODE, 2021 EDITION

· INTERNATIONAL BUILDING CODE (IBC), 2021 EDITION

2. PROJECT DESCRIPTION

THE PROJECT INCLUDES THE INSTALLATION OF NATURAL GAS (NG) GENERATORS AS AN

ON-SITE GENERATION RESOURCE, MICROGRID CONTROL SYSTEM, ELECTRICAL

INTERCONNECTION SWITCHGEAR, INTERCONNECTION CIRCUIT WIRINGS, AND MODIFICATION

TO THE EXISTING ELECTRICAL DISTRIBUTION SYSTEM AS NECESSARY TO ESTABLISH

HUNTER ARMY AIRFIELD'S MICROGRID NETWORK. THE MICROGRID WILL PROVIDE ENERGY

RESILIENCY AND SECURITY FOR CRITICAL OPERATIONS IN THE EVENT OF AN INTERRUPTION

TO THE PRIMARY POWER GRID.

3. CODE ANALYSIS

THE SWITCHGEAR BUILDING HAS BEEN ANALYZED FOR LIFE SAFETY AND FIRE PROTECTION

REQUIREMENTS USING THE CODES AND STANDARDS LISTED BELOW. THE UNIFIED

FACILITIES CRITERIA (UFC) APPLY TO THE MILITARY DEPARTMENTS, THE DEFENSE

AGENCIES, AND THE DOD FIELD ACTIVITIES WHICH PROVIDES TECHNICAL CRITERIA FOR

NEW AND RENOVATED MILITARY CONSTRUCTION. BASED ON UFC 1-200-01 CHAPTER 2 -

MODIFICATIONS TO THE INTERNATIONAL BUILDING CODE (IBC) AND UFC 3-600-01, THE IBC

WILL BE USED FOR FIRE RESISTANCE REQUIREMENTS, ALLOWABLE FLOOR AREA, BUILDING

HEIGHT LIMITATIONS, BUILDING SEPARATION DISTANCE REQUIREMENTS, BUILDING

CONSTRUCTION TYPE, AND OCCUPANCY SEPARATION REQUIREMENTS EXCEPT AS MODIFIED

BY UFC 3-600-01. NFPA 101 WILL BE USED FOR BUILDING CONSTRUCTION RELATED TO

EGRESS AND SAFETY TO LIFE AS WELL AS FIRE RESISTANCE RATINGS OF NON-BEARING

PARTITIONS. OCCUPANCY LOAD WILL BE IN ACCORDANCE WITH NFPA 101 EXCEPT AS

MODIFIED BY THE SUPPLEMENTAL AND MAXIMUM OCCUPANT LOAD FACTORS OF UFC

3-600-01 SECTION 10-3. IF ANY CONFLICTS OCCUR BETWEEN NFPA 101 AND IBC, RELATED TO

FIRE RESISTANCE RATING, NFPA 101 WILL TAKE PRECEDENCE AND APPLICABLE CRITERIA

CONTAINED IN UFC 3-600-01. THE ENGINE GENERATORS ARE CONTAINED WITHIN

PURPOSE-DESIGNED WEATHERPROOF HOUSINGS. IN ACCORDANCE WITH NFPA 37 SECTION

A.3.3.3, THE WEATHERPROOF HOUSINGS ARE NOT CONSIDERED A BUILDING OR STRUCTURE,

AND THEREFORE THEY ARE NOT SUBJECT TO THE BUILDING CODE AND LIFE SAFETY

REQUIREMENTS OF IBC AND NFPA 101.

5. OCCUPANCY CLASSIFICATION (IBC AND NFPA)

NOTE:

THE SWITCHGEAR BUILDING IS NOT CONSIDERED NORMALLY OCCUPIED SPACE.

9. HAZARDOUS AREA PROTECTION (NFPA 101, IBC)

NO HAZARDOUS AREAS SEPARATION REQUIREMENTS ARE APPLICABLE TO THE SWITCHGEAR

BUILDING - NO FIRE BARRIER OR SMOKE PARTITON SEPARATIONS WILL BE REQUIRED.

THEREFORE, THE REQUIREMENTS OF NFPA 101 AND IBC FOR FIRE BARRIER AND SMOKE

PARTITION PENETRATIONS, FIRE AND SMOKE DAMPERS, AND WALL IDENTIFICATION ARE NOT

APPLICABLE TO THE SWITCHGEAR BUILDING.

7. ALLOWABLE AREA AND HEIGHT (IBC CHAPTER 5)

NOTE:

A CALCULATED FRONTAGE INCREASE ALLOWANCE IS NOT REQUIRED FOR THE SWITCHGEAR

BUILDING.

8. FIRE-RESISTIVE REQUIREMENTS FOR CONSTRUCTION TYPE IIB (IBC TABLE 601 AND 705.5)

· PRIMARY STRUCTURAL FRAME 0-HOUR RATING

· EXTERIOR BEARING WALLS 1-HOUR RATING*

· INTERIOR BEARING WALLS 0-HOUR RATING

· EXTERIOR NONBEARING WALLS AND PARTITIONS 1-HOUR RATING*

· INTERIOR NONBEARING WALLS AND PARTITIONS 0-HOUR RATING

· FLOOR CONSTRUCTION AND SECONDARY MEMBERS 0-HOUR RATING

· ROOF CONSTRUCTION AND SECONDARY MEMBERS 0-HOUR RATING

*TAKES INTO ACCOUNT THE FIRE SEPARATION DISTANCE REQUIREMENT OF IBC TABLE

705.5. THE FIRE SEPARATION DISTANCE IS LESS THAN 10 FEET.

THE EXISTING BUILDING ADJACENT TO THE SWITCHGEAR ENCLOSURE IS

CONSTRUCTION TYPE IIB, AND THE EXTERIOR WALLS FACING THE SWITCHGEAR

ENCLOSURE ARE RATED FOR 0-HOUR. THEREFORE, A MINIMUM 1-HOUR FIRE RATING IS

REQUIRED FOR THE EXTERIOR WALLS OF THE SWITCHGEAR ENCLOSURE TO MAINTAIN

COMPLIANCE WITH IBC TABLE 705.5.

N/A: NOT APPLICABLE

10. INSULATION REQUIREMENTS (UFC 3-600-01)

IN ACCORDANCE WITH UFC 3-600-01 SECTION 8-3, THERMAL AND ACOUSTICAL INSULATION

WITH A FLAME SPREAD (FS) RATING NOT HIGHER THAN 75, AND A SMOKE DEVELOPED (SD)

RATING NOT HIGHER THAN 150 WHEN TESTED IN ACCORDANCE WITH ASTM E84 (NFPA 255)

SHALL BE USED UNLESS THE EXCEPTIONS OF SECTION 8-3.2 ARE MET.

11. INTERIOR FINISH CLASSIFICATION (NFPA 101)

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LOSS OF INCOMING UTILITY SOURCE

1. THE MICROGRID CONTROL SYSTEM (MGCS) AUTOMATICALLY ISOLATES ARC MICROGRID FROM THE

UTILITY GRID (OPEN POI BREAKER(S) - ISLANDED MODE.

2. INITIATE GENERATOR UNIT(S) START AND SYNCHRONIZE THE GENERATOR UNIT(S) ON TO THE MICROGRID

AND OPERATE IN PARALLEL WITH THE AVAILABLE DER ON THE MICROGRID.

3. SOLAR PV SYSTEM REMAIN CONNECTED AND IN OPERATION PROVIDING ENERGY INTO THE MICROGRID

SYSTEM.

4. CONROE ARC FACILITIES REMAIN IN OPERATION IN ISLAND MODE

RETURN OF NORMAL UTILITY SUPPLY SOURCE

1. THE MGCS DETECTS THE RETURN OF HEALTHY UTILITY SERVICE SOURCE.

2. DISCONNECT AND DEENERGIZE ALL ONSITE GENERATION RESOURCE (GENERATOR AND PV).

3. MANUALLY CLOSE POI BREAKER TO THE HEALTHY UTILITY SOURCE.

INTENTIONAL ISLANDING OPERATION FROM GRID CONNECTED MODE

1. INITIATE START OF ALL GENERATOR UNITS AND BRING THE GENERATOR UNITS ONLINE TO OPERATE IN

PARALLEL WITH THE UTILITY GRID AND PV.

2. DISPATCH DER (GENERATORS/PV) TO PICK UP ALL THE LOAD WHERE POWER FLOW IS NEAR ZERO

(SLIGHTLY EXPORTING POWER) ACROSS POI.

3. OPEN POI BREAKER(S) TO ISOLATE ARC MICROGRID FROM THE UTILITY GRID FOR “SEAMLESS

TRANSITION” TO ISLAND MODE.

THE MICROGRID CONTROL SYSTEM (MGCS) SHALL MANAGE THE OPERATION OF INTERCONNECTION SWITCHGEAR, DER, AND LOAD BALANCING FOR ALL MODES OF OPERATION WHEN THE MICROGRID CONTROL

SYSTEM IS SET TO AUTOMATIC OPERATION.

MODE OF OPERATIONS

THERE ARE THREE STATES/MODES OF OPERATION FOR THE MICROGRID POWER SYSTEM: GRID CONNECTED, ISLANDED, AND BLACKOUT CONDITIONS. THE GRID CONNECTED AND THE ISLANDED MODES ARE THE TWO WORKING MODES OF OPERATIONS WHERE THE MICROGRID POWER SYSTEM IS ENERGIZED. IN BLACKOUT CONDITION, THE POWER SYSTEM IS COMPLETELY DEENERGIZED. SEE MICROGRID'S MODE OF OPERATION DIAGRAM BELOW FOR THE GRAPHICAL REPRESENTATION OF THE MICROGRID'S MODE OF OPERATION AND THE

ASSOCIATED TRANSITION BETWEEN MODES OF OPERATION.

MICROGRID MODE OF OPERATION DIAGRAM

MICROGRID OPERATIONAL DESCRIPTION

BLACKOUT CONDITION

IT IS POSSIBLE FOR THE MICROGRID POWER SYSTEM TO EXPERIENCE A COMPLETE BLACKOUT

CONDITION AS A RESULT OF SEVERE FAULT ON THE POWER SYSTEM, MIS-OPERATION OR FAILURE

OF THE MICROGRID CONTROL SYSTEM AND/OR PROTECTIVE RELAY SYSTEM. IN SUCH BLACKOUT

EVENT, THE MICROGRID CONTROL SYSTEM WILL ISOLATE THE UTILITY GRID AND ALL OF THE

DISTRIBUTED ENERGY RESOURCES FROM THE MICROGRID POWER SYSTEM. THE MICROGRID WILL

HAVE THE CAPABILITY TO START ITS DER UNITS FROM THE DE-ENERGIZED STATE. THE MICROGRID

POWER SYSTEM CAN BE BROUGHT BACK INTO SERVICE MANUALLY OR SEMI-AUTOMATICALLY

AFTER THE POWER SYSTEM IS DEEMED IN SAFE CONDITION FOR REENERGIZATION.

WHEN THE MICROGRID IS IN A BLACKOUT STATE, THE MGCS COMMANDS THE DERS TO

DISCONNECT FROM THE MICROGRID POWER SYSTEM. THE DERS REMAIN DISCONNECTED UNTIL A

BLACK-START SEQUENCE IS INITIATED, OR THE MICROGRID IS RECONNECTED TO THE UTILITY GRID

(SEE THE FOLLOWING TRANSITIONS SUBSECTION).

TRANSITIONAL STATES BETWEEN MODE OF OPERATION:

PLANNED DISCONNECT FROM THE UTILITY GRID

PLANNED INTENTIONAL ISLANDING INVOLVES CONTROLLING THE ENERGY FLOW AT THE POINT

OF INTERCONNECTION(POI) TO NEAR ZERO AND SEPARATING FROM THE GRID. DURING

PLANNED INTENTIONAL ISLANDING A MICROGRID DISCONNECTS FROM THE AREA ELECTRIC

POWER SYSTEM (EPS) IN A PLANNED MANNER WHEN THE EPS IS GRID-CONNECTED AND IN A

NORMAL OPERATING MODE. THE TRANSITION TO ISLAND MODE IS BASED ON A REASONABLE

WARNING PERIOD.

FOR THE PLANNED DISCONNECT FROM THE UTILITY GRID, THE MICROGRID SYSTEM

OPERATOR WILL INITIATE GOTO ISLAND MODE. THE MGCS WILL RESPOND TO A COMMAND TO

DISCONNECT THE MICROGRID FROM THE UTILITY BY DISPATCHING THE DERS AND OPENING

THE MICROGRID POI. PRIOR TO OPENING THE POI, THE MGCS WILL EXECUTE CONTROL

ACTIONS TO PREPARE THE MICROGRID FOR A SUCCESSFUL TRANSITION TO ISLAND

OPERATION AND TO MITIGATE THE NEED TO SHED LOAD.

THE MGCS WILL PERFORM THE FOLLOWING FUNCTIONS DURING A PLANNED SEAMLESS

DISCONNECT:

1. VERIFIES PERMISSIVE CONDITIONS OF THE MICROGRID POWER SYSTEM TO INITIATE

GOTO ISLAND MODE (DISCONNECT FROM THE UTILITY GRID) PROCESS.

2. STARTS BOTH STANDBY GENERATOR UNITS TO PROVIDE ADDITIONAL SPINNING

RESERVE AND INERTIA ON THE MICROGRID.

3. ADJUSTS RENEWABLE DER POWER OUTPUTS FOR ISLAND OPERATION

4. DISPATCHES GENERATORS TO REDUCE POWER FLOW (REAL AND REACTIVE) ACROSS

THE MICROGRID POI

5. OPENS THE POI BREAKER WHEN THE REAL AND REACTIVE POWER FLOWS ARE WITHIN

DISCONNECTS LIMITS. [THE REAL AND REACTIVE POWER FLOWS SHOULD BE NEAR

ZERO, BUT SLIGHTLY IMPORTING REAL AND REACTIVE POWER.]

6. AUTOMATICALLY CHANGES ONE DER (GENERATOR UNIT) TO ISOCHRONOUS MODE

7. THE SOLAR PHOTOVOLTAIC SYSTEM WILL AUTOMATICALLY DISCONNECT ITSELF

FORM THE MICROGRID THROUGH THE INVERTER WHEN IT SENSE MICROGRID

INSTABILITY (VOLTAGE AND/OR FREQUENCE ARE OUTSIDE OF ACCEPTABLE LIMITS)

DURING THE TRANSITION OR WHEN THERE IS INSUFFICIENT SUNLIGHT ENERGY

AVAILABLE TO PRODUCE POWER. THE SOLAR PHOTOVOLTAIC SYSTEM WILL

AUTOMATICALLY SWITCH MODE OF OPERATION FROM ISLAND MODE TO GRID

CONNECTED MODE. THE PV SYSTEM WILL AUTOMATICALLY RECONNECT ITSELF TO

THE MICROGRID WHEN THE MICROGRID POWER SYSTEM IS HEALTHY AND STABLE (AT

NORMAL OPERATING VOLTAGE AND FREQUENCY) AND WHEN SUNLIGHT IS AVAILABLE

TO PRODUCE POWER AND INJECT TO POWER INTO THE MICROGRID.

UNPLANNED DISCONNECT FROM THE UTILITY GRID (NON-SEAMLESS)

UNPLANNED ISLANDING WILL OCCUR WHEN THE MICROGRID PROTECTIVE RELAY SYSTEM

DETECTS THE SUDDEN LOSS OF UTILITY VOLTAGE OR ABNORMAL UTILITY VOLTAGE, CURRENT

AND/OR FREQUENCY BEYOND ACCEPTABLE LIMITS. THE DETECTION OF UTILITY SOURCE

ABNORMAL CONDITIONS WILL INITIATE THE MGCS TO TRANSITION TO ISLANDED MODE BY

DISPATCHING THE DERS AND OPENING THE MICROGRID POI. THE MGCS WILL PERFORM THE

FOLLOWING FUNCTIONS IN RESPONSE TO DETECTION OF UNACCEPTABLE UTILITY SOURCE

ABNORMAL CONDITION:

1. POI RELAY OPENS THE POI BREAKER

2. THE SOLAR PHOTOVOLTAIC SYSTEM WILL AUTOMATICALLY DISCONNECT ITSELF

FORM THE MICROGRID THROUGH THE INVERTER WHEN IT SENSE MICROGRID

INSTABILITY (VOLTAGE AND/OR FREQUENCE ARE OUTSIDE OF ACCEPTABLE LIMITS)

DURING THE TRANSITION OR WHEN THERE IS INSUFFICIENT SUNLIGHT ENERGY

AVAILABLE TO PRODUCE POWER.

3. OPEN ALL LOAD BREAKERS ON ARC MAIN DISTRIBUTION PANEL POWER PANEL PP-1

LOADS TO UNLOAD SYSTEM FOR RESTART.

4. START STANDBY GENERATOR UNITS

5. THE PV SYSTEM WILL AUTOMATICALLY RECONNECT ITSELF TO THE MICROGRID WHEN

THE MICROGRID POWER SYSTEM IS HEALTHY AND STABLE (AT NORMAL OPERATING

VOLTAGE AND FREQUENCY) AND WHEN SUNLIGHT IS AVAILABLE TO PRODUCE POWER

AND INJECT TO POWER INTO THE MICROGRID.

6. CLOSE ARC BUILDING FEEDER BREAKERS ONE BY ONE TO ENERGIZE FACILITY LOADS.

THERE ARE SCENARIOS WHERE THE MICROGRID PROTECTIVE SYSTEM MAY NOT ONLY TRIP

THE POI BREAKER(S), BUT ALSO TRIP THE DERS RESULTING IN MICROGRID BLACKOUT

CONDITION. IF SUCH AN EVENT OCCURRED, THE MGCS WILL DISCONNECT ALL DERS FROM

THE DEAD MICROGRID POWER SYSTEM. THE MGCS WILL ALSO RESET THE DER'S SETPOINTS

PARAMETERS TO PREPARE FOR A MANUAL OR AUTOMATIC BLACK-START OPERATION. THE

MICROGRID CONTROL SYSTEM WILL BE POWERED FROM THE UNINTERRUPTIBLE POWER

SUPPLY (UPS) SOURCES. ONCE THE MICROGRID IS BLACKED OUT CONDITION, THE MICROGRID

WILL HAVE THE ABILITY TO BE RE-ENERGIZED BY ONE OF THE FOLLOWING METHODS:

1. FOR MOMENTARY OUTAGE (LESS THAN ONE MINUTE):

a. THE SOLAR PHOTOVOLTAIC SYSTEM WILL AUTOMATICALLY DISCONNECT ITSELF

FORM THE MICROGRID THROUGH THE INVERTER WHEN IT SENSE MICROGRID

INSTABILITY (VOLTAGE AND/OR FREQUENCY ARE OUTSIDE OF ACCEPTABLE

LIMITS) DURING THE TRANSITION OR WHEN THERE IS INSUFFICIENT SUNLIGHT

ENERGY AVAILABLE TO PRODUCE POWER. THE SOLAR PHOTOVOLTAIC SYSTEM

WILL AUTOMATICALLY SWITCH MODE OF OPERATION FROM ISLAND MODE TO

GRID CONNECTED MODE.

b. THE PV SYSTEM WILL AUTOMATICALLY RECONNECT ITSELF TO THE MICROGRID

WHEN THE MICROGRID POWER SYSTEM IS HEALTHY AND STABLE (AT NORMAL

OPERATING VOLTAGE AND FREQUENCY) AND WHEN SUNLIGHT IS AVAILABLE TO

PRODUCE POWER AND INJECT TO POWER INTO THE MICROGRID.

c. FACILITY LOADS RETURN ONCE UTILITY RETURNS TO NORMAL POWER.

2. FOR TEMPORARY OR LONGER DURATION OF UTILITY POWER OUTAGE, THE ON-SITE

GENERATOR UNITS ARE BROUGHT ONLINE TO PROVIDE ELECTRICAL POWER TO THE

MICROGRID SYSTEM TO SERVE THE CAMPUS LOADS IN ISLAND MODE UNTIL THE

NORMAL UTILITY POWER SOURCE BECOME AVAILABLE. THE PV SYSTEM WILL

AUTOMATICALLY DISCONNECT AND RECONNECT ITSELF AS DESCRIBED IN ITEM 1. THE

OPERATOR MAY RE-ENERGIZE THE MICROGRID BY INITIATING THE MGCS

BLACK-START SEQUENCE.

A QUALIFIED SYSTEM OPERATOR NEEDS TO INVESTIGATE AND EXAMINE THE STATE OF

CONDITIONS OF THE MICROGRID POWER SYSTEM BEFORE RE-ENERGIZATION OF THE

MICROGRID POWER SYSTEM AFTER A BLACKOUT EVENT. THIS IS TO ENSURE THAT ANY

DANGEROUS CONDITIONS ARE IDENTIFIED, AND THE SYSTEM IS PLACED BACK IN A SAFE

CONDITION FOR RE-ENERGIZATION.

RECONNECT THE DEAD MICROGRID TO THE UTILITY GRID

(BLACKOUT STATE TO GRID CONNECTED MODE)

THE MICROGRID SYSTEM OPERATOR INITIATES GOTO GRID CONNECTED MODE FROM THE

MGCS'S HMI(S) OR THE AUTOMATIC RECONNECT FUNCTION OF THE MGCS. THE MGCS WILL

PERFORM THE FOLLOWING FUNCTIONS TO RECONNECT THE LIVE MICROGRID TO THE UTILITY

GRID:

1. CONFIRM HEALTHY UTILITY SOURCE (VOLTAGE AND FREQUENCY ARE WITHIN

ACCEPTABLE AND STABLE LIMITS)

2. DISCONNECT AND DEENERGIZE ALL ONSITE GENERATION RESOURCE (GENERATOR

AND PV)

3. CLOSE THE MICROGRID POI BREAKER

NOTE: THIS IS THE FASTEST WAY TO RESTORE POWER TO THE MICROGRID AND TO RESTORE

ELECTRICAL SUPPLY SOURCE TO THE CAMPUS AFTER A BLACKOUT. THE DERS CAN REMAIN

OFF-LINE ALLOWING THE SYSTEM OPERATOR TIME TO ACCESS THE CONDITION OF DERS

AFTER A BLACKOUT BEFORE BRINGING THEM BACK ON-LINE.

BLACK START MICROGRID

THE MICROGRID SYSTEM OPERATOR INITIATES BLACKSTART FROM THE MGCS'S HMI(S). THE

MGCS WILL INITIATE BLACK START SEQUENCE UNDER ITS OWN POWER USING AVAILABLE

DERS. THIS METHOD WILL ALLOW THE MICROGRID TO BE RESTORED AND OPERATED DURING

A UTILITY OUTAGE. THE MGCS WILL PERFORM THE FOLLOWING FUNCTIONS TO BLACK START

MICROGRID POWER SYSTEM:

1. CONFIRM THAT THE MICROGRID POWER SYSTEM IS DEAD (SYSTEM VOLTAGE IS

BELOW THE MICROGRID DEAD THRESHOLD).

2. CONFIRM THAT THE POI BREAKER IS OPENED AND ISOLATED FROM THE UTILITY GRID

AND ALL DERS ARE DISCONNECTED FROM THE MICROGRID ISLAND.

3. OPEN FACILITY LOAD FEEDER BREAKERS AT THE ARC MAIN DISTRIBUTION PANEL AND

POWER PANEL PP-1 LOADS.

4. STARTS BOTH STANDBY GENERATOR UNITS

5. ENERGIZE THE MAIN UTILITY SERVICE SWITCHGEAR BY CLOSING THE GENERATOR

UNIT TIE BREAKER(S)

6. ENERGIZE DISTRIBUTION ARC MAIN DISTRIBUTION PANEL AND POWER PANEL PP-1

LOADS BY CLOSING BREAKERS ONE AT A TIME.

7. THE PV SYSTEM WILL AUTOMATICALLY RECONNECT ITSELF TO THE MICROGRID WHEN

THE MICROGRID POWER SYSTEM IS HEALTHY AND STABLE (AT NORMAL OPERATING

VOLTAGE AND FREQUENCY) AND WHEN SUNLIGHT IS AVAILABLE TO PRODUCE POWER

AND INJECT TO POWER INTO THE MICROGRID.

NOTE THAT THIS IS THE FASTEST WAY TO RESTORE POWER TO THE MICROGRID AND TO

RESTORE POWER TO THE CAMPUS AFTER A BLACKOUT. THE DERS CAN REMAIN OFF-LINE

ALLOWING THE SYSTEM OPERATOR TIME TO ASSESS THE CONDITION OF DERS AFTER A

BLACKOUT BEFORE BRINGING THEM BACK ON-LINE.

PV INVERTER OPERATION DESCRIPTION

A. MANUAL POWER ON/OFF - NORMALLY, IT IS NOT NECESSARY TO TURN OFF THE INVERTER, BUT

IT CAN BE SHUT DOWN MANUALLY IF REGULATION SETTING OR MAINTENANCE IS REQUIRED.

RESTARTING THE INVERTER IS REQUIRED AFTER REGULATION SETTING OR MANUAL (FAULT)

SHUTDOWN. THE INVERTER WILL START UP AND OPERATE NORMALLY IF THE START-UP

CONDITIONS ARE MET. OTHERWISE, THE INVERTER WILL GO TO STAND-BY MODE.

B. AUTOMATIC TURN ON/OFF - THE INVERTER WILL START UP AUTOMATICALLY WHEN THE OUTPUT

VOLTAGE AND POWER OF PV ARRAYS MEET THE SET VALUE, AC POWER GRID IS NORMAL, AND

THE AMBIENT TEMPERATURE IS WITHIN ALLOWABLE OPERATING RANGE. THE INVERTER WILL BE

SHUT DOWN AUTOMATICALLY WHEN THE OUTPUT VOLTAGE AND POWER OF PV MODULES ARE

LOWER THAN THE SET VALUE, THE AC POWER GRID FAILS, OR THE AMBIENT TEMPERATURE

EXCEEDS THE NORMAL RANGE

C. OPERATION MODES - THERE ARE 4 OPERATION MODES: LOGO/START-UP, NORMAL OPERATION, STANDBY AND FAULT MODES.

1. START-UP MODE IS WHEN THE INVERTER IS CHECKING IF CONDITIONS ARE MET FOR

CONNECTION AFTER A MANUAL START-UP OF THE INVERTER.

2. NORMAL OPERATION MODE IS THE DEFAULT INDICATION INTERFACE FOR NORMAL

OPERATION. IN THIS MODE, THE INVERTER IS CONVERTING THE DC POWER FROM THE

ARRAY TO AC POWER, FEEDING IT CONTINUOUSLY TO THE GRID.

3. STANDBY MODE IS ACTIVE WHEN THE OUTPUT VOLTAGE AND POWER OF PV MODULES

DO NOT MEET THE STARTUP CONDITIONS OR PV VOLTAGE AND INPUT POWER ARE

LOWER THAN THE SET VALUE. THE INVERTER WILL CHECK AUTOMATICALLY WHETHER

IT MEETS THE STARTUP CONDITIONS IN THIS MODE UNTIL IT TURNS BACK TO NORMAL

OPERATION MODE.

4. FAULT MODE IS DISPLAYED WHEN THE INVERTER DISCONNECTS FROM THE GRID DUE

TO A FAULT IN THE INVERTER OR GRID.

D. GRID-TIED POWER GENERATION -THE INVERTERS WILL HAVE AN AUTOMATIC GRID-TIED POWER

GENERATION PROCESS, WHICH WILL CHECK CONSTANTLY WHETHER AC POWER GRID MEETS

THE CONDITIONS FOR GRID-TIED POWER GENERATION, AND TEST WHETHER THE PV ARRAY HAS

ADEQUATE ENERGY. AFTER ALL CONDITIONS ARE MET, THE INVERTER WILL ENTER NORMAL

OPERATION MODE AND ENTER NET METERING WITH THE GRID. WHILE GENERATING POWER,

THE INVERTER CAN DETECT THE POWER GRID AT ALL TIMES, SUPPLY CURRENT, MATCHING

VOLTAGE AND FREQUENCY OF THE GRID AND KEEP THE PHOTOVOLTAIC ARRAY OUTPUT AT THE

MAXIMUM POWER POINT.

STANDBY GENERATOR UNIT SYNCHRONIZATION CABILITY

A. EACH OF THE STANDBY GENERATOR UNIT SHALL HAVE THE CAPABILITY TO SYNCHRONIZE TO

THE MICROGRID ACROSS THEIR RESPECTIVE GENERATOR TIE BREAKER, OR AT THE UTILITY POI

BREAKER.

B. EACH OF THE STANDBY DIESEL GENERATOR UNIT SHALL HAVE THE CAPABILITY TO OPERATE IN

THE “MICROGRID CONTROL MODE” OR IN THE “LOCAL CONTROL MODE” WHICH IS SELECTED BY

LOCAL CONTROL SELECTOR SWITCH LOCATED ON THE RESPECTIVE GENERATOR CONTROL

CUBICLE ON THE MV SWITCHGEAR.

C. EACH GENERATOR UNIT SHALL HAVE ITS OWN DEDICATED AUTO-SYNCHRONIZER AND CAN

OPERATE INDEPENDENTLY FROM THE MICROGRID CONTROLLER WHEN PLACED IN THE “LOCAL

CONTROL MODE”. THE LOCAL GENERATOR CONTROL/AUTO-SYNCHRONIZER WILL PERFORM THE

GENERATOR UNIT STARTER/STOP COMMANDS, AVR RAISE/LOWER COMMAND, GOVERNOR

CONTROL, SYNCHRONIZATION, SYNCH SOURCE SELECTION AND APPROPRIATE BREAKER

CLOSE/OPEN/TRIP COMMANDS. THE MICROGRID CONTROLLER SHALL EXECUTE THE CONTROL

AND MONITORING FUNCTIONS THROUGH THE LOCAL GENERATOR

CONTROL/AUTO-SYNCHRONIZER.

D. IN THE “MICROGRID CONTROL MODE”, THE MICROGRID CONTROLLER EXECUTES THE

AUTOMATIC GENERATOR STARTER/STOP COMMANDS, SYNCHRONIZATION, SYNCH SOURCE

SELECTION AND APPROPRIATE BREAKER CLOSE/OPEN/TRIP COMMANDS BASED ON

PROGRAMMED SEQUENCE OF OPERATION.

E. IN THE “LOCAL CONTROL MODE”, THE OPERATOR WILL NEED TO MANUALLY INITIATE THE

GENERATOR STARTER/STOP COMMANDS, SYNCH SOURCE SELECTION VIA SOURCE SELECTOR

SWITCH (GEN BREAKER/POI BREAKER), SYNCHRONIZATION, AND BREAKER CLOSE COMMANDS

BASED ON ESTABLISHED SEQUENCE OF MANUAL GENERATOR SYNCHRONIZATION OPERATION.

GRID CONNECTED MODE (NORMAL MODE OF OPERATION)

IN GRID CONNECTED MODE OPERATION, THE MICROGRID POWER SYSTEM IS CONNECTED IN PARALLEL TO THE UTILITY GRID INTERCONNECTION APPLICATION WILL BE FOR NET METERING. THE REAL AND REACTIVE POWER FLOW THROUGH THE POINT OF INTERCONNECTION (POI) WITH THE UTILITY COMPANY WITHIN OPERATING LIMITS.

THE GRID CONNECTED MODE INCLUDES ACTIVE POWER LIMITS, REACTIVE POWER LIMITS, AND VOLTAGE LIMITS AT THE POI. THE MICROGRID CONTROL SYSTEM (MGCS) MANAGES THE AVAILABLE DISTRIBUTED ENERGY RESOURCES (DER) WHILE MAINTAINING THE OPERATING CONSTRAINTS OF THE MICROGRID POWER SYSTEM.

THE SOLAR PHOTOVOLTAIC SYSTEM GENERATES POWER WHEN SUNLIGHT IS AVAILABLE PROVIDING SUPPLEMENTAL POWER TO THE MICROGRID NETWORK. THE ON-SITE GENERATOR UNITS ARE NORMALLY OFF-LINE ON STANDBY. THE GENERATOR UNIT(S) WILL OPERATE WHEN REQUIRED DURING UTILITY POWER

OUTAGE OR DURING THE DEMAND MANAGEMENT OR PEAK SHAVING PERIOD IF DESIRED.

ISLANDED MODE (CONTINGENCY MODE OF OPERATION)

THE MICROGRID POWER SYSTEM WILL AUTOMATICALLY TRANSITION FROM GRID CONNECTED MODE TO ISLAND MODE IN EVENT OF THE UTILITY GRID POWER OUTAGE. THE MICROGRID POWER SYSTEM WILL HAVE THE CAPABILITY TO TRANSITION FROM THE GRID CONNECTED MODE TO ISLAND MODE IN ANTICIPATION OF POTENTIAL OR PLANNED UTILITY POWER OUTAGE EVENTS SUCH AS SCHEDULED ROLLING BLACK, IMMINENT SEVERE WEATHER EVENTS, WILDFIRE EVENTS, ETC. THIS ACTION IS MANUALLY INITIATED BY THE SYSTEM OPERATOR VIA

MGCS'S HMI.

IN ISLANDED MODE OF OPERATION, THE MICROGRID POWER SYSTEM UTILIZES THE AVAILABLE DERS ON THE

CAMPUS SITE TO PROVIDE ELECTRICAL POWER TO THE CAMPUS FACILITIES.

THE SOLAR PHOTOVOLTAIC SYSTEM GENERATES POWER WHEN SUNLIGHT IS AVAILABLE PROVIDING POWER TO THE MICROGRID POWER SYSTEM. WHEN THE MICROGRID IS IN AN ISLANDED STATE, THE MGCS PROVIDES

FREQUENCY CONTROL OR VOLTAGE CONTROL MODES:

· FREQUENCY CONTROL/REAL POWER SHARING -- THE MGCS WILL COMMAND ONE OF THE DERS TO OPERATE IN ISOCHRONOUS MODE TO MAINTAIN THE MICROGRID SYSTEM FREQUENCY AT THE NOMINAL VALUE (60 HZ). THE MGCS WILL COMMAND THE REMAINING DERS TO OPERATE IN DROOP MODE. THE MGCS WILL ADJUST THE POWER OUTPUT SETPOINTS OF THESE DERS TO SHARE THE MICROGRID LOAD AND TO ENSURE THE

ISOCHRONOUS DER HAS ENOUGH OPERATING MARGIN TO RESPOND TO FREQUENCY DEVIATIONS.

· VOLTAGE CONTROL/REACTIVE POWER SHARING -- THE MGCS WILL COMMAND TWO GENERATORS TO OPERATE IN VOLTAGE DROOP MODE TO REGULATE THEIR TERMINAL VOLTAGES ACCORDING TO THEIR DROOP LINE. THE MGCS WILL ADJUST THE VOLTAGE SETPOINTS OF THESE DERS TO ENSURE THAT THEIR TERMINAL VOLTAGES DO NOT EXCEED PRESET LIMITS. THE MGCS WILL COMMAND THE REMAINING DERS TO OPERATE IN CONSTANT REACTIVE POWER MODE. THE MGCS WILL ADJUST THE REACTIVE POWER OUTPUT SETPOINTS OF THESE DERS TO ENSURE THAT THEIR TERMINAL VOLTAGES DO NOT EXCEED PRESET LIMITS. THE MGCS WILL ADJUST THE VOLTAGE SETPOINTS AND REACTIVE POWER SETPOINTS OF THE DERS TO SHARE THE MICROGRID REACTIVE

POWER REQUIREMENT TO MAINTAIN SYSTEM VOLTAGE AT THE CONFIGURED VOLTAGE SETPOINT.

CLIN NOTES:

CLIN 0004: ADD PV/CARPORT #4 (61KW)

CLIN 0005: ADD PV/CARPORT #5 (63.44KW)

CLIN 0006: ADD PV/CARPORT #6 (102.48KW)

CLIN 0007: ADD PV/CARPORT #7 (94.85KW)

CLIN 0008: ADD PV/CARPORT #8 (101.87KW)

CLIN 0009: ADD ELECTRICAL SERVICE FROM POWER PANEL PP-1 TO

EXISTING FIRE HOUSE MAIN SERVICE ENTRANCE RATED

DISCONNECT.

CLIN 0003: ADD GEN2 340KW (AT .8PF) PRIME RATED GENERATOR.

UNPLANNED DISCONNECT FROM UTILITY

(UNSUCCESSFUL ISLANDING)

BLACKOUT

CONDITION

SYSTEM OUTAGE EVENT

DURING ISLAND

OPERATION

UNPLANNED DISCONNECT

FROM UTILITY

(SUCCESSFUL ISLANDING)

PLANNED DISCONNECT

FROM UTILITY

(SEAMLESS ISLANDING)

BLACK START

INTO ISLAND MODEISLANDED

RECONNECT TO

UTILITY GRID

GRID CONNECTED

RECONNECT TO

UTILITY GRID

BLACKOUT

CONDITION

RECONNECT TO

UTILITY GRID FROM

ISLAND MODE

PLANNED DISCONNECT

FROM UTILITY

(SEAMLESS ISLANDING)

UNPLANNED DISCONNECT

FROM UTILITY

(SEAMLESS ISLANDING)

BLACK START CAMPUS

INTO ISLAND MODE

SYSTEM OUTAGE

EVENT DURING

ISLAND OPERATION

UNPLANNED DISCONNECT FROM UTILITY

(UNSUCCESSFUL ISLANDING)

RECONNECT TO UTILITY GRID FROM

CAMPUS BLACKOUT CONDITION

GRID CONNECTED

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LOAD BANK TESTING SEQUENCE:

A. CONNECT PORTABLE STEPPED LOAD BANK TO OPEN LOAD BANK DISCONNECT.

TRANSFER ALL LOADS OFF OF SWITCHGEAR BUS 2 AND OPEN BREAKERS CB-F1A, CBF2A,

AND TIE BREAKER.

B. CLOSE BREAKER CB-F4 AND LOAD BREAK DISCONNECT SWITCH.

C. CLOSE BREAKER CB-G1 AND TURN ON GENERATOR 1.

D. STEP PORTABLE LOAD BANK UP SEQUENTIALLY UP TO FULL LOAD THEN REDUCE LOAD

STEPPING BACK DOWN TO NO LOAD.

E. TURN GENERATOR 1 OFF AND OPEN BREAKER CB-G1.

F. REPEAT STEPS C THROUGH E WITH GENERATOR 2 IF CLIN0003 IS SELECTED.

G. OPEN BREAKER CB-F4 AND LOAD BREAK DISCONNECT SWITCH.

H. CLOSE TIE BREAKERS AND RETURN BREAKERS CB-F1A AND CB-F2A BACK TO PREVIOUS

POSITION.

I. DISCONNECT AND REMOVE PORTABLE LOAD BANK.

NOTE THAT FOR THIS PROJECT UNPLANNED SEAMLESS TRANSITION IS NOT POSSIBLE WITHOUT A BATTERY

ENERGY STORAGE SYSTEM.

CLIN 0003: ADD GEN2 340KW (AT .8PF) PRIME RATED GENERATOR.

CLIN 0004: ADD PV/CARPORT #4 (61KW)

CLIN 0005: ADD PV/CARPORT #5 (63.44KW)

CLIN 0006: ADD PV/CARPORT #6 (102.48KW)

CLIN 0007: ADD PV/CARPORT #7 (94.85KW)

CLIN 0008: ADD PV/CARPORT #8 (101.87KW)

CLIN 0009: ADD ELECTRICAL SERVICE FROM POWER PANEL PP-1 TO

EXISTING FIRE HOUSE MAIN SERVICE ENTRANCE RATED

DISCONNECT.

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CTRL

CTRL CTRL

CTRL CTRL CTRL CTRL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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SHEET ID

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K D

05/06/25

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US Army Corps of Engineers

'-0

10'-0"20'-105 8"

MH-8

TYPE 1

MH-6

TYPE 3

0 8'4' 16'

GENERATOR

GEN1

GENERATOR

GEN2

20'-105 8"

DB-12

8X4"C 2X4

DB-8

12X4"C 3X4

DB-9

4X4"C 2X2

DB-10

2X4"C 1X2

DB-11

2X4"C 1X2

7' -6

CLIN0003: ADD GEN2

340KW (AT .8PF) PRIME

RATED GENERATOR

20'-2"

FROM

UTILITY

FEED

DBC-12

2X2"C

DBC-11

4X2"C

DB-13

2X2"C

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ES400

KEYNOTES:

1. PROVIDE 3000A, 480Y/277V, 65 KAIC, NEMA 3R LOAD BREAK

DISCONNECT AND METER. ELECTRICAL EQUIPMENT AND

INSTALLATION MUST COMPLY WITH ENTERGY DISTRIBUTED ENERGY

RESOURCE STANDARDS FOR DISTRIBUTION INTERCONNECTION AND

CUSTOMER INSTALLATION STANDARDS FOR ELECTRIC SERVICE

MANUAL.

NOTES:

1. REFER TO SHEET E-005 FOR CLIN DESCRIPTIONS.

2. REFER TO SHEET E-600 FOR FEEDER CONDUCTOR SIZE, CONDUIT

SIZE, AND RACEWAY ROUTING.

3. REFER TO STRUCTURAL SHEETS FOR EQUIPMENT PAD DETAILS.

SEE MECHANICAL

SHEET M-100 FOR

CONTINUATION

TO MH-7

(SEE DETAIL K15

ON SHEET ES401)

LOAD BREAK

DISCONNECT

3000A, 480Y/277V, 65KAIC, NEMA 3R

METERING

SEE DETAIL A4 ON

SHEET ES401 FOR

CONTINUATION

TO TERMINATION BOX

(SEE DETAIL K15 ON

SHEET ES401)

TO EXISTING 1500KVA

UTILITY TRANSFORMER

(SEE DETAIL K15 ON

SHEET ES401)

DB-13

8X4"C 2X4

SCALE: 1/8" = 1'-0"

ELECTRICAL DISTRIBUTION SITE PLANA1

PLAN

NORTH

2Q R

_P la ns -0

SDSDSDSD

X X

NPW

WWWWWWWWWWWW

F F

8" W

L C

CTRL

SCALE: 1/8" = 1'-0"

SWITCHGEAR AREAA4

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

S U

B M

C H

E C

D R

A W

E D

C O

A C

T N

S O

N N

U E

SHEET ID

D A

A R

K D

05/06/25

A Y

U S

A R

M Y

C O

O F

E D

D R

N G

E, KY

R N

,I N

E D

E M

O O

W N

,P A

A N

C O

N R

O E

A R

M Y

R E

S E

R V

E C

R ,C

O N

R O

E, TE

R O

G R

E S

S, 0K W

D C

Fi le

P at h:

P lo tD at e:

C :\p ro je ct s\ da ta so ur ce -1

\c om m on

dw g

US Army Corps of Engineers

SWITCHGEAR

PDC

8' -0

'-0

9' -0

10'-43 4" 14'-0" 6'-0"

MH-6

TYPE 3

0 8'4' 16'

SCALE: 1/8" = 1'-0"

SERVICE FEEDER INTERCEPT PLANK15 0 8'4' 16'

MH-7

TYPE 3

MH-5

DB-2

6X4"C 2X3

DB-1

6X4"C 2X3

DB-12

8X4"C 2X4

DB-12

8X4"C 2X4

DB-9

4X4"C 2X2

DB-8

12X4"C 3X4

CLIN0007: ELECTRICAL

SERVICE FROM POWER

PANEL PP-1 TO EXISTING

FIRE HOUSE MAIN

SERVICE ENTRANCE

RATED DISCONNECT

DB-14

2X4"C 1X2

DBC-11

4X2"C

DBC-14

1X2"C

800A, 480V, 3P, NEMA 4X,

GENERATOR LOAD BANK

DISCONNECT SWITCH

M E

N D

M E

N T

M .S

O G

E R

M .W

A G

C .D

R U

M M

O N

ES401

SERVICE TRANSFORMER

SITE ELECTRICAL DISTRIBUTION PLAN

TO UTILITY

GENERATORS

(SEE DETAIL A9

ON SHEET ES400)

TO MH-8

(SEE DETAIL A9

ON SHEET ES400)

TO MH-7 (SEE DETAIL

K15 THIS SHEET)

TO FIREHOUSE

(SEE DETAIL A5

ON SHEET ES402)

TO MH-4

(SEE DETAIL A5

ON SHEET ES402)

NOTES:

1. REFER TO SHEET E-005 FOR CLIN DESCRIPTIONS.

2. REFER TO SHEET E-600 FOR FEEDER CONDUCTOR SIZE, CONDUIT

SIZE, AND RACEWAY ROUTING.

3. REFER TO STRUCTURAL SHEETS FOR EQUIPMENT PAD DETAILS.

4. PROVIDE TEMPORARY POWER AS REQUIRED TO MAINTAIN ARC

BUILDING OPERATIONS THROUGHOUT CONSTRUCTION.

5. ROUTE 2" CONDUIT ALONG SIDE OF BUILDING, AVOIDING

INTERFERENCES ALONG THE NORTH SIDE OF THE BUILDING. FOR

CONTINUATION SEE ES402.

TO MH-6

(SEE DETAIL A4

ON SHEET ES401)

ARC BUILDING

EXISTING PULL BOX

DB-13

8X4"C 2X4

SWITCHGEAR

PDC

SUGGESTED CONSTRUCTION

PHASING:

1. PHASE 1:

a. COORDINATE WITH OWNER AND ENTERGY PRIOR TO ANY

SHUTDOWNS. FIELD VERIFY EXISTING CONDITIONS AND LOCATE

UTILITIES PRIOR TO BEGINNING WORK. FINAL LOCATION OF

ELECTRICAL EQUIPMENT SHALL BE FIELD LOCATED.

b. INTERCEPT SECONDARY FEED FROM EXISTING 1500kVA

TRANSFORMER TO ARC BUILDING PULLBOX.

c. PROVIDE NEW MANHOLE AND 3000A, 600V, 3P, 4W, NEMA 3R

PAD-MOUNTED SECONDARY TERMINATION ENCLOSURE.

PAD-MOUNTED SECONDARY TERMINATION ENCLOSURE MUST BE

LOCATED IN LINE WITH INTERCEPTED ARC BUILDING FEEDER.

d. PROVIDE NEW CONDUCTORS, CONDUIT, AND DUCTBANK FROM

TRANSFORMER SECONDARY THROUGH MANHOLE AND TERMINATE

INSIDE PAD-MOUNTED SECONDARY TERMINATION ENCLOSURE.

TERMINATE INTERCEPTED ARC BUILDING FEEDER INSIDE

PAD-MOUNTED SECONDARY TERMINATION ENCLOSURE.

2. PHASE 2:

a. PROVIDE CONDUCTORS, CONDUIT, AND DUCTBANK FROM

TRANSFORMER SECONDARY TO MICROGRID SWITCHGEAR

BREAKER M1-POI.

b. PROVIDE CONDUCTORS, CONDUIT, AND DUCTBANK FROM

MICROGRID SWITCHGEAR BREAKER CB-F1 TO PAD-MOUNTED

SECONDARY TERMINATION ENCLOSURE.

c. REMOVE CONDUCTORS FROM TRANSFORMER SECONDARY TO

PAD-MOUNTED SECONDARY TERMINATION ENCLOSURE.

d. TRANSITION POWER TO PAD-MOUNTED SECONDARY TERMINATION

ENCLOSURE FROM TRANSFORMER TO MICROGRID SWITCHGEAR.

1c 2c1d

2d2b

2d2a

DB-7

8X4"C 2X4

DB-13

8X4"C 2X4

DB-13

8X4"C 2X4

TO PAD-MOUNTED

TERMINATION ENCLOSURE

(SEE DETAIL K15 THIS

SHEET)

NOTE 5

PAD-MOUNTED

SECONDARY

TERMINATION

ENCLOSURE

PLAN

NORTH

PLAN

NORTH

L4 S-501

2Q R

_P la ns -0

MILITARY DRIVE

N O

FIRE LANE

FIRE

LANE

N E

FIRE LANE

N E

SDSDSDSD

SDSD

X X X X X X X X X X X X X X X X X X X X

X X

XXXX

X X

XXXXXXXXXX

XXXXXXXXXXXXXXX

X X X X X X X

XXXXXXXXXXXXX

NPW NPW NPW NPW NPW NPW NPW NPW NPW

NPW

W N

NPW

WWWWWWWWWWWWW

W W

SAN

SAN SAN SAN SAN SAN SAN SAN SAN SAN SAN

F F

F F F F

F F

F F F F F F F F F F

F U

T 8"

W L

F U

T 8"

W L

P15

P39

N O

FIRE LANE

FIRE

LANE

N E

FIRE LANE

N E

SDSDSDSD

SDSD

X X X X X X X X X X X X X X X X X X X X

X X

XXXX

X X

XXXXXXXXXX

XXXXXXXXXXXXXXX

X X X X X X X

XXXXXXXXXXXXX

NPW NPW NPW NPW NPW NPW NPW NPW NPW

NPW

WWWWWWWWWWWWW

W W

SAN

SAN SAN SAN SAN SAN SAN SAN SAN SAN SAN

F F

F F F F

F F

F F F F F F F F F F

F U

T 8"

W L

F U

T 8"

W L

P15

P39

CTRLCTRL CTRL

L C

CTRL

L C

CTRL CTRL CTRL

CTRL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

S U

B M

C H

E C

D R

A W

E D

C O

A C

T N

S O

N N

U E

SHEET ID

D A

A R

K D

05/06/25

A Y

U S

A R

M Y

C O

O F

E D

D R

N G

E, KY

R N

,I N

E D

E M

O O

W N

,P A

A N

C O

N R

O E

A R

M Y

R E

S E

R V

E C

R ,C

O N

R O

E, TE

R O

G R

E S

S, 0K W

D C

Fi le

P at h:

P lo tD at e:

C :\p ro je ct s\ da ta so ur ce -1

\c om m on

dw g

US Army Corps of Engineers

SCALE: 1" = 30'-0"

CARPORT PV SYSTEM PLANA15 30' 60'0

)P V

E L

M O

D U

)P V

E L

M O

D U

)P V

E L

M O

D U

)P V

E L

M O

D U

)P V

E L

M O

D U

66"

)P V

E L

M O

D U

(334) PV PANEL MODULES

)P V

E L

M O

D U

MAIN SERVICE

TRANSFORMER, SEE

ONE-LINE DIAGRAM

DRAWING E-600

A R

T #6

A R

T #5

A R

T #7

A R

T #1

A R

T #2

A R

T #3

A R

T #4

CLIN0008 CARPORT #8

(TYP)

INVERTER 6-1

AC COMBINER

PANEL PV-1

INVERTER 5-1

INVERTER 6-2

D H

INVERTER 7-1

INVERTER 8-2

INVERTER 8-1

E R

1 INVERTER 4-1

DB-3

4X4"C

2X2DB-14

2X4"C 1X2

SEE SHEET ES403

FOR CONTINUATION

CLIN0007: ELECTRICAL

SERVICE FROM POWER

PANEL PP-1 TO EXISTING

FIRE HOUSE MAIN

SERVICE ENTRANCE

RATED DISCONNECT

SCALE: 1" = 30'-0"

CARPORT PV AREAA5 30' 60'0

MH-6

TYPE 3

MH-5

TYPE 3

MH-4

TYPE 3

HH HH

DBC-3

3X2"C

DBC-2

1X2"C

DBC-10

1X2"C

DBC-9

1X2"C

DBC-8

1X2"C

DBC-7

1X2"C

DBC-6

2X2"C

DBC-1

2X2"C

DBC-14

2X2"C

M E

N D

M E

N T

M .S

O G

E R

M .W

A G

C .D

R U

M M

O N

ES402

NOTES:

1. REFER TO SHEET E-005 FOR CLIN DESCRIPTIONS.

2. REFER TO SHEET E-600 FOR FEEDER CONDUCTOR

SIZE, CONDUIT SIZE, AND RACEWAY ROUTING.

3. REFER TO STRUCTURAL SHEETS FOR EQUIPMENT

PAD DETAILS.

4. OUTDOOR: ROUTE CONDUIT ALONG EXTERIOR OF

BUILDING, AVOIDING EXISTING OBSTRUCTIONS.

PENETRATE WALL THROUGH WAREHOUSE

PORTION OF BUILDING, COORDINATE WITH

OWNER ON PENETRATION LOCATION BEFORE

DOING ANY WORK.

INDOOR: SHOWN IS APPROXIMATED CONDUIT

ROUTING THROUGH EXISTING BUILDING. FIBER

OPTIC CABLE MUST BE ROUTED THROUGH

EXISTING TRAYS TO THE GREATEST EXTENT

POSSIBLE. ROUTE FIBER OPTIC INSIDE 1" NMT

TUBING INSIDE EXISTING TRAY.

SITE ELECTRICAL DISTRIBUTION PLAN

KEYNOTES:

1. BID OPTIONS: PV CARPORTS 4, 5, 6, 7 AND 8 ARE BID

OPTIONS. OPTIONS INCLUDE FOLLOWING FOR PV

CARPORTS 4, 5, 6, 7 AND 8:

· PV PANELS, INVERTERS, CONDUCTORS, AND

RACEWAY

· CARPORT STRUCTURES AND ANCHORS

· DRILLED PIER FOUNDATIONS

1 1

MH-7

TYPE 3

NOTE 4

PLAN

NORTH

PLAN

NORTH

NOTES:

1. ALL STRING CABLES AND HOMERUNS MUST BE

LABLED ON BOTH ENDS OC CONNECTION WITH

STRING NUMBER, INVERTER NUMBER, AND

POLARITY. ALL CONDUCTORS MUST BE LABELED

PER NFPA 70 ARTICLE 690 WIRING METHODS.

2. PROVIDE DC CONDUCTORS IN FREE AIR

ATTACHED TO PV RACKING STRUCTURE. PROVIDE

ONE 2" CONDUIT FROM EACH INVERTER TO THE

AC COMBINER BOX. REFER TO ONE-LINE FOR

CONDUIT AND CONDUCTOR SIZES.

3. FIELD VERIFY AND ADJUST CONDUIT,

CONDUCTOR, AND DUCT BANK LAYOUT AND

QUANTITIES BASED ON FINAL PV EQUIPMENT

SELECTED AND MANUFACTURER REQUIREMENTS.

PROVIDE CALCULATIONS FOR ALTERATIONS.

DB-1

4X4"C

DB-2

4X4"C

INV5-1

2"C

DB-2

4X4"C

INV7-1

INV7-2

2X2"C 1X2

6X2"C 3X21

INV1-1

INV1-2

2X2"C 1X2

INV2-1

INV2-2

2X2"C 1X2

INV3-1

INV3-2

2X2"C 1X2

INV4-1

2"C 1X2

INV8-1

INV8-2

2X2"C 1X2

L4 S-501

2Q R

_P la ns -0

MILITARY DRIVE

N O

FIRE LANE

FIRE

LANE

N E

FIRE LANE

N E

SDSDSDSDSDSDSD SD

SDSDSDSD

X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X

X X

XXXXXXX

X X

XXXXXXXXXXXXXXXXX

XXXXXX

XXXXXXXXXXXXXXXXX

X X X X X X X X X X X

XXXXXXXXXXXXXXXXXXXX

NPW NPW NPW NPW NPW NPW NPW NPW NPW NPW NPW NPW NPW NPW NPW

NPW

WWWWWWWWWWWWWWWWWWWWWW

W W

SAN

SAN SAN SAN SAN SAN SAN SAN SAN SAN SAN SAN SAN SAN SAN SAN SAN

F F

F F F F F F F

F F

F F F F F F F F F F F F F F F F

F U

T 8"

W L

F U

T 8"

W L

A A A A A A A A

AAA

A A

X X

XXXXXXXXXXXXXXXX

XXXXXXXXXXXXXXX

NPW

F F

G G G

SCALE: 1" = 30'-0"

CARPORT LIGHTING PLANA1 30' 60'0

PP-1, 5

PP-1, 7

PP-1, 9

PP-1, 11

PP-1, 15PP-1, 13PP-1, 1

PP-1, 3

KEYNOTES:

1. RELOCATE SALVAGED STREET LIGHT, POLE, AND CIRCUIT HERE.

ROTATE FIXTURE 90° AND EXTEND…

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File details come from the government source that posted it. Updated May 12, 2025.