MT Vault-9 ME drawings dated 3-19-2026.pdf

VAULT 2

VAULT 3VAULT 8

VAULT 6

VAULT 5

VAULT 4

VAULT 10

V9-E V9-D

V9-B

V9-C

V9-A

VAULT 7

VAULT 1

AREA OF WORK

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SRBR No: 25111A

CONSTRUCTION SET 03-19-2026

“Professional Certification. I hereby certify that these documents were prepared or approved by me, and that I am a duly licensed professional engineer under the laws of the state of , License No. , Expiration Date: .”

PE905594

8-31-2026

Washington DC

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03-19-2026

M001

MECHANICAL

COVER

SHEET

NO SCALE

KEYPLAN

Ex.10"x8"

Ex.10"x8"

M

M

A

50x18

A

50x18

C

B

A

CRAC

9-1A

CRAC

9-1

2"

EX. 21

2"

D

E

EX. VENTILATION

DUCT

EX. VENTILATION

DUCT

J

F

K

2"

EX. 12"

F

G

K

H

I

H

I

V9-E

V9-D

V9-B

V9-C

V9-A

SEE GENERAL

NOTE #5

SCALE: 1/4" = 1'-0"

VAULT 9 PLAN - MECHANICAL DEMOLITION

0 1' 2' 4' 8'

SCALE: 1/4" = 1'-0"

VAULT 9 PLAN - MECHANICAL NEW WORK

0 1' 2' 4' 8'

EXISTING AIR DEVICE TO REMAIN. BALANCE TO 75 CFM AIRFLOW

NEW COMPUTER ROOM AC UNIT WITH RETURN AIR INTAKE ON

TOP. INSTALL MOTOR OPERATED DAMPER ON RETURN OPENING

INTERLOCKED TO CLOSE WHEN THE UNIT IS OFF. RETURN DUCT

SHALL BE FULL SIZE OPENING OF THE UNIT. CONTRACTOR

SHALL EXPAND WALL OPENING AS NEEDED. APPLY FIRE CAULK

AROUND THE DUCT AT THE WALL PENETRATION.

NEW COMPUTER ROOM AC UNIT WITH RETURN AIR INTAKE ON

TOP.

CONNECT NEW 21

2" CHILLED WATER SUPPLY AND RETURN LINES

TO EXISTING AT POINT INDICATED.

NEW RETURN DUCT FROM THE TOP OF THE NEW AC UNIT TO THE

FINISHED FACE OF THE WALL AS SHOWN. REUSE THE EXISTING

WALL OPENING. THE EXISTING WALL OPENING WILL NEED TO BE

MADE LARGER TO ACCEPT THE NEW RETURN DUCT.

NEW 12" COLD WATER UP INTO BOTTOM OF AC UNIT.

NEW 21

2" CHILLED WATER LINES UNDER RAISED FLOOR

1" CONDENSATE DRAIN. CONNECT TO NEW AC UNIT.

EXTEND CONDENSATE LINE OVER AND CONNECT TO EXISTING

DRAIN LINES THAT RUN TO LEVEL BELOW

CONNECT NEW COLD WATER LINE TO EXISTING, MATCH EXISTING

LINE SIZE

NEW 21

2" CHILLED WATER LINE UP INTO BOTTOM OF AC UNIT AND

CONNECT. NEW AC UNIT SHALL HAVE A FACTORY INSTALLED

MODULATING 2-WAY CONTROL VALVE.

NEW WORK PLAN NOTES

A

B

C

D

E

F

G

H

I

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GENERAL NOTES

1. CONTRACTOR TO PERFORM A PRE-BALANCE TEST OF BOTH

CHILLED WATER AND SUPPLY AIRFLOW FOR THE ROOM.

DOCUMENT THE READINGS IN A REPORT

2. WORK SHALL BE SCHEDULED WITH THE OCCUPANTS OF THE

ROOM 2 WEEKS IN ADVANCE.

3. UNIT CONTROLS SHALL BE INTEGRATED INTO EXISTING BUILDING

MANAGEMENT SYSTEM. UNIT SHALL BE SET UP TO MAINTAIN A

SPACE TEMPERATURE OF 72 DEGREES AND 50% RELATIVE

HUMIDITY.

4. CONTRACTOR TO FIELD VERIFY ALL EXISTING CONDITIONS, PIPE

ARRANGEMENTS, SIZES, LOCATION, ETC. BEFORE BIDDING THE

WORK

5. THE EXISTING DOOR AND FRAME BETWEEN ROOMS V9D AND V9E

MUST BE TEMPORARILY REMOVED TO MAKE WAY FOR THE NEW

UNIT TO BE BROUGHT INTO THE ROOM V9E. CONTRACTOR SHALL

INCLUDE THIS WORK IN THEIR BID AND SHALL FOLLOW ALL

REQUIRED SECURITY MEASURES AS DIRECTED BY THE US

TREASURY.

M101

DEMO &

NEW WORK

MECHANICAL

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SRBR No: 25111A

CONSTRUCTION SET 03-19-2026

“Professional Certification. I hereby certify that these documents were prepared or approved by me, and that I am a duly licensed professional engineer under the laws of the state of , License No. , Expiration Date: .”

PE905594

8-31-2026

Washington DC

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03-19-2026

EXISTING AIR DEVICE TO REMAIN. REMOVE AND CLEAN DEVICE

EXISTING COMPUTER ROOM AC UNIT TO BE REMOVED ENTIRELY

INCLUDING POWER, PIPING CONTROLS, DUCT, FLOOR STAND,

ETC.

CUT EXISTING CHILLED WATER SUPPLY AND RETURN LINES BACK

TO POINT INDICTED AND REMOVE PIPING

EXISTING CHILLED WATER SUPPLY AND RETURN LINE UP FROM

LEVEL BELOW

EXISTING CHILLED WATER LINES BELOW THE FLOOR TO BE

DEMOLISHED

CUT EXISTING CHILLED WATER LINES AT POINT INDICATED AND

REMOVE BACK TO AC UNIT

CUT DOMESTIC COLD WATER LINE AT POINT INDICATED AND

REMOVE BACK TO AC UNIT

DEMOLITION PLAN NOTES

K

Xref .\25111ABdr.dwg

M201

SPECIFICATIONS

SCHEDULES

& DETAILS

MECHANICAL SPECIFICATIONS

1. Furnish and install a complete and operational system in accordance with drawings and these specifications. Provide all materials whether specified or not for a complete and operational system that complies with all required codes and standards. All materials and equipment shall be installed in accordance with the manufacturer's instructions and all applicable codes and standards.

Equipment shall be installed complete including power, controls, supports, etc. Equipment and associated controls shall be functionally tested in all operating modes. All equipment and materials shall be new unless otherwise indicated.

2. The contractor shall be responsible for visiting the site prior to bid and becoming familiar with all existing conditions that may affect his work. The contractor shall include in his bid any required labor and materials necessary to modify, remove or relocate existing work to allow for the new work to be installed. If the contactor believes the new work cannot be installed as shown in the drawings, he shall inform the project construction manager immediately. There shall be no additional compensation for failure to include coordination with existing conditions in the scope and cost.

3. All work shall be done in accordance with applicable building, mechanical, plumbing, electrical and energy codes and standards.

These include, but are not limited to the latest International Building Code (IBC), International Mechanical Code (IMC), International Plumbing Code (IPC), International Fuel Gas Code (IFGC), National Fire Protection Association (NFPA), American Society of Refrigeration and Air Conditioning Engineers (ASHRAE), Sheet Metal and Air Conditioning Contractors National Association (SMACNA), National Electrical Code ASME CSD-1.

4. The contractor shall maintain a competent superintendent on site at all times who will oversee all work and ensure the construction is done in a safe, clean and professional manner. He shall ensure the work is done in accordance with the project specifications, all layout is correct and accurate and the quality of the workmanship meets or exceed industry standards. He shall also verify all manufacturer instructions are being followed for installation and setup.

5. The contractor shall submit equipment shop drawings for all major equipment and materials including, but not limited to Computer Room AC units, pipe, valves and insulation. Shop drawings shall indicate materials, dimensions, weights, performance data and warranty information. Equipment shall be as scheduled on the drawings. Alternate manufacturers may be considered provided they meet or exceed the scheduled performance data and are of equal or better quality. Alternate equipment must fit within the allotted space.

6. The contractor shall maintain a set of as-built documents on site at all times. The drawings shall maintain red-line markup of all deviations from the deign documents and include pertinent information such as critical dimensions and elevations.

7. All new equipment and materials shall be reviewed by the contractor before ordering to ensure the equipment will fit in the given space, is suitable for the location, arrangement of duct, piping, etc, and can be serviced once installed. All required service access space shall be maintained and room shall be provided to remove filters and manipulate valves and dampers. Verify equipment electrical characteristics meet the existing available power.

8. The new unit shall be labeled with a phenolic engraved plate that lists the unit ID number, Airflow, Quantity of motors, Motor HP, Motor Amperage, Voltage/Phase, quantity of filters and sizes, chilled water flow in gpm.

9. Computer Room AC units shall be started and tested by a certified representative of the manufacturer. All other equipment shall be started and tested by the installing contractor. The equipment shall be tested in all modes of operation. All operating set points shall be programmed in coordination with the building operating staff. Verify all peripheral components including, but not limited to, control valves, sensors, interlocks, etc operate as intended and specified. The contractor shall provide a one year parts and labor warranty starting from the date the project is accepted and considered substantially complete by the engineer. At the time the equipment is turned over to the owner, all units shall have clean filters.

10. All new air and hydronic systems shall be balanced by a third-party firm certified by AABC or NEBB. Test and balance all fans and the computer room AC unit. All airflows and water flows shall be set to within 10% of that prescribed on the drawings. Submit to the engineer of record a Test and Balance report at the completion of the project indicating information about each piece of equipment and each system. Provide equipment operating data, and individual supply outlet measurement.

11. Ductwork shall be constructed to SMACNA standards for low pressure duct (2” wc) and made with galvanized sheet steel, minimum 26 gage. Duct joints and fittings shall be sealed Class B. All joints and seems shall be taped or sealed using mastic material. The supply duct shall be externally wrapped with 1-1/2” thick fiberglass duct-wrap with foil face and integral vapor barrier.

12. Chilled water pipe and cold water pipe shall be type L copper with soldered fittings and joints. Pro-Press joints and fittings are also acceptable. Ball valve shall be of brass construction and full port with extended handles and a drain port placed on the unit side.

Balance valves shall be brass construction and include test ports and memory stops. They shall be equal to “Xylem Circuit Setters”.

Chilled water pipe and cold water pipe shall be insulated with closed cell elastomeric preformed pipe insulation equal to “Armacell”, ½” thick. All joints and plain ends shall be sealed with an appropriate sealant.

13. Condensate drain pipe shall be DWV or type L copper. Insulated with closed cell elastomeric preformed pipe insulation equal to “Armacell”, ½” thick.

14. The CRAC unit floor stand shall be provided with the unit, by the manufacturer. The stand shall be constructed out of steel with reinforced, adjustable legs to the set the height needed. the stand shall support eh unit along the entire perimeter and shall have legs at each corner and evenly spaced along the long dimension. The legs shall have enlarged feet to spread the load.

DRAWING NO. :

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SRBR No: 25111A

CONSTRUCTION SET 03-19-2026

“Professional Certification. I hereby certify that these documents were prepared or approved by me, and that I am a duly licensed professional engineer under the laws of the state of , License No. , Expiration Date: .”

PE905594

8-31-2026

Washington DC

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STRAINER WITH THREADED HOSE-

END CONNECTION FOR BLOWDOWN

BALL VALVE - TYPICAL

POSITIVE SHUT-OFF CIRCUIT

SETTER WITH TEST PORTS AND

MEMORY LOCK

CHWS

CHWR

COMPUTER ROOM AC UNIT WITH

TOP RETURN, BOTTOM

DISCHARGE

CONNECT CHILLED WATER LINES

TO UNIT COIL CONNECTIONS

FACTORY FURNISHED

MODULATING TWO-WAY

CONTROL VALVE

RAISE FLOOR

BASEMENT FLOOR

UNIT FLOOR STAND

NO SCALE

COMPUTER ROOM AC UNIT PIPING DETAIL

1" COPPER CONDENSATE LINE

2" COLD WATER

CONNECT COLD WATER TO

UNIT HUMIDIFIER

VAULT 3VAULT 8

VAULT 6

VAULT 5

VAULT 4

VAULT 10

V9-E V9-D

V9-B

V9-C

V9-A

VAULT 7

VAULT 1

AREA OF WORK

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SRBR No: 25111A

CONSTRUCTION SET 03-19-2026

“Professional Certification. I hereby certify that these documents were prepared or approved by me, and that I am a duly licensed professional engineer under the laws of the state of , License No. , Expiration Date: .”

PE905594

8-31-2026

Washington DC

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03-19-2026

E001

ELECTRICAL

COVER

SHEET

ELECTRICAL SYMBOL LIST

JUNCTION OR PULL BOX - CEILING, WALL MOUNTED. SIZE PER N.E.C. UNLESS NOTED

OTHERWISE.

SYMBOL DESCRIPTION

ABBREVIATIONS

MAIN CIRCUIT BREAKER

FUSED SAFETY SWITCH

ABOVE FINISHED FLOOR (TO CENTERLINE UNO)

ENCLOSED CIRCUIT BREAKER

COMBINATION FUSED STARTER SWITCH

MCB

FSS

CFSS

C, CDT

ECB

AFF

C/B

EQUIPMENT GROUND

CIRCUIT BREAKER

CONDUIT

NON-FUSED SAFETY SWITCH

UNLESS NOTED OTHERWISE

VOLTAGE (RATING AS INDICATED)

UNO

V

NFSS

MAIN LUGS ONLYMLO

PC/COMMUNICATION OUTLETPC

ELECTRICAL PANEL: 120/208 VOLT - SURFACE, RECESSED MOUNTED

WIRING CONCEALED ABOVE CEILING OR IN WALL (INSULATED CONDUCTOR

WIRING BELOW GRADE OR BELOW FINISHED SLAB (INSULATED CONDUCTOR

PLAN NOTE - REFER TO NOTES ON DRAWING.1

CONTROL EQUIPMENT

CONFIGURATION AS REQUIRED AND GROUND PER CODE) (5).

ELECTRICAL PANEL: 277/480 VOLT - SURFACE, RECESSED MOUNTED,

EQUIPMENT CONNECTION NOTE - SEE SCHEDULE.

G, GND

(1)

EQUIPMENT CONNECTION - PROVIDE LOCAL DISCONNECT AT UNIT W/FUSE

PROTECTED WHERE REQUIRED (SEE EQUIPMENT PLANS AND SCHEDULES TO

INCLUDE DOCUMENTS FOR EQUIPMENT PROVIDED UNDER OTHER DIVISIONS FOR

CONNECTION REQUIREMENTS)

CIRCUIT CONNECTION LEGEND

2,3 INDICATES CIRCUITS TO BE CONNECTED

(ADJACENT TO DEVICE)

[P3] INDICATES CIRCUIT SOURCE PANEL

(TYPICAL FOR ROOM/SPACE)

PROVIDE GFCI OUTLET FOR EACH LOCATION INDICATED AND WHERE REQUIRED BY CODE.

USE OF FEED THRU NEUTRAL/PROTECTION IS NOT ACCEPTABLE.

CONFIGURATION AS REQUIRED AND GROUND PER CODE) (5).

SYMBOL NOTES

NEC NATIONAL ELECTRICAL CODE

(LATEST EDITION UNO)

AMP,AMPERE (RATING AS INDICATED)A

POLEP

J J

FSS WITHIN SITE OF EQUIPMENT (FUSE SIZE AS REQUIRED BY SUPPLIER)

GFCI DUPLEX RECEPTACLE, NEMA 5-20R (1)

EXISTING TO REMAIN(E)

NO SCALE

KEYPLAN

A. DEMOLITION COORDINATION:

1. NOTIFY THE (PM) OF ANY WORK THAT MAY DISRUPT OTHER AREAS OUTSIDE

OF THE WORK AREA.

GENERAL REQUIREMENTS

SPECIAL CONDITIONS

REFER TO THE SPECIFICATIONS FOR ADDITIONAL REQUIREMENTS OF THIS

PROJECT.

US DEPARTMENT OF TREASURY - PROJECT MANAGER (PM) TO REVIEW AND

APPROVE THE WORK. SUPPLEMENTAL DOCUMENTS OR INSTRUCTIONS BY THE (PM)

TO BE PART OF THE SCOPE OF WORK.

1.

2.

B. WIRING REQUIREMENTS:

1. WIRING METHOD SHALL BE AS REQUIRED PER CODE FOR BUILDING

CONSTRUCTION TYPE AND EACH SPACE FUNCTION.

2. PROVIDE QUANTITY OF CONDUCTORS REQUIRED TO INCLUDE EQUIPMENT

GROUNDING PER CODE. WIRING SHOWN ON PLAN FOR POWER AND SWITCH

CONTROL CLARITY ONLY.

3. PROVIDE DEDICATED NEUTRAL CONDUCTOR FOR ALL RECEPTACLE AND

LIGHTING CIRCUITS. NEUTRALS CAN BE SHARED FOR 20 AMP CIRCUITS ONLY IF

OVERSIZED.

4. CONDUCTOR AWG SIZE SHALL BE AS REQUIRED BY CODE AND ADJUSTED FOR

VOLTAGE DROP.

DESIGNATION

EXISTING EQUIPMENT TO BE REMOVED

EXISTING EQUIPMENT RELOCATED

EXISTING EQUIPMENT TO REMAIN

DEMOLITION LEGEND

DESCRIPTION

NEW EQUIPMENT

(R) (E)

(X)

(N)

EXISTING EQUIPMENT TO BE REMOVED(X/R)

AND RELOCATED

C. SCIF:

1. ALL WORK WITH-IN THE SPACE TO CONFORM TO SCIF AREA REQUIREMENTS.

2. ALL WIRING IN SPACE TO BE INSTALLED IN CONDUIT. CONDUIT AND DEVICES AT

SCIF PERIMETER ALLS TO BE SURFACE MOUNTED.

3. ALL CONDUIT PENETRATIONS TO BE GROUNDED AT POINT OF PENETRATION OR

DI-ELECTRIC COUPLINGS USED.

4. PROVIDE SCIF EMI POWER FILTER FOR CRAC UNIT FEEDERS AT SCIF INTERIOR

WALL NEAR THE POINT OF PENETRATION.

VAULT ELECTRIC ROOM

(SEE E102)

D1MENC-0-7,9,11

(N)CRAC

9-1A

(N)CRAC

9-1

EMENC-0A-14,16,18

3 4

(SCIF)

VAULT 2

VAULT 3VAULT 8

VAULT 6

VAULT 5

VAULT 4

VAULT 10

V9-E

V9-D

V9-B

V9-C

V9-A

VAULT 7

VAULT 1

(SCIF)

2 4

GENERAL NOTES

1. COORDINATE DEMOLITION AND REPLACEMENT OF CRAC UNIT

SEQUENCING WITH MECHANICAL WORK TO MAINTAIN COOLING AT

ALL TIMES.

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

VAULT 9 PLAN - ELECTRICAL

0 2' 4' 8' 16'

DISCONNECT EXISTING CRAC UNIT AND ADJUST EXISTING

DISCONNECT TO COORDINATE WITH NEW UNIT LOCATION OF

REPLACEMENT AND WORK-IN CLEARANCE REQUIREMENTS OF

THE UNIT AND DISCONNECT.

PLAN NOTES (DEMOLITION)

D1

E101

VAULT 9 PLAN

ELECTRICAL

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SRBR No: 25111A

CONSTRUCTION SET 03-19-2026

“Professional Certification. I hereby certify that these documents were prepared or approved by me, and that I am a duly licensed professional engineer under the laws of the state of , License No. , Expiration Date: .”

PE905594

8-31-2026

Washington DC

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MAINTAIN EXISTING POWER CIRCUITS. CONNECT NEW CRAC

UNITS. PROVIDE FUSE SIZE PER EQUIPMENT NAME PLATE.

BEND #6 GROUND AT FEEDER CONDUIT POINT OF PENETRATION

INTO 9 AND BOND TO TELECOM GROUND BUS BAR IN SPACE.

DIVERT FROM NORMAL POWER PANEL TO EMERGENCY POWER.

WORK TO BE COMPLETED WITH ROOM (V9-A) ELECTRIC ROOM.

PROVIDE SCIF EMI FILTER SURFACE MOUNTED ON SECURE SIDE

OF WALL AND NEAR FEEDER POINT OF PENETRATION.

PLAN NOTES (NEW WORK)

VAULT 10

V9-D

V9-B

V9-C

V9-A

VAULT 1

T

T

TRANSFORMER RACK (E)

DISCONNECT 'CP-V9' (E)

DISCONNECT 'PP-V9' (E)

DISCONNECT 'CP-V1' (E)

DISCONNECT 'PP-V1' (E)

PANEL 'LPNC-0' (E)

PANEL 'EMENC - 0A' (E)

PANEL 'MENC-0' (E)

PANEL 'EMENC-0' (E)

PANEL 'ELPNC-0' (E)

ECB 'MENC-3'

ECB 'MENC-1'

(E) DISTRIBUTION PANEL 'EMD-PNCO'

(E) SWITCHBOARD 'BNC-0'

(E) SWITCHBOARD 'EMBNC-0'

VAULT ELECTRIC ROOM

E102

VAULT

ELECTRIC

ROOM

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SRBR No: 25111A

CONSTRUCTION SET 03-19-2026

“Professional Certification. I hereby certify that these documents were prepared or approved by me, and that I am a duly licensed professional engineer under the laws of the state of , License No. , Expiration Date: .”

PE905594

8-31-2026

Washington DC

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03-19-2026

SCALE: 1/4" = 1'-0"

0 1' 2' 4' 8'

2. SITE VISIT:

SECTION 16B - DEMOLITION WORK

1. SCOPE:

A. Material and equipment made superfluous by reason of the new work shall become the property of the contractor and shall be removed from the site unless the equipment is specifically indicated to be retained by the Owner, in which case the contractor shall disconnect & remove the equipment and return to the Owner.

B. The contractor shall furnish all labor, material and equipment necessary to complete the demolition work.

C. The work shall include removal and relocation of existing equipment as shown on the drawings.

A. Prior to preparing the bid, the contractors shall visit the site and familiarize themselves with all existing conditions. Make all necessary investigations as to locations of utilities and all other matters which can affect the work. No additional compensation will be made to the contractor as a result of failure to get familiar with the existing conditions under which the work must be performed.

8. DISTRIBUTION EQUIPMENT:

7. GROUNDING:

6. DRAWINGS AND SPECIFICATIONS:

4. SHOP DRAWINGS:

5. GUARANTEE:

3. REGULATIONS AND CODE REQUIREMENTS:

2. SCOPE:

SECTION 16A - ELECTRICAL WORK

1. GENERAL:

9. EQUIPMENT CONNECTIONS AND MOTOR STARTERS:

A. The GENERAL and SPECIAL CONDITIONS listed under Division 1 shall govern this work where applicable.

B. The contractor shall furnish all labor, materials, equipment and services necessary for the construction of the complete functioning electrical system.

C. All labor and materials, although not specifically mentioned, but necessary for the completion of the work and the successful operation of the electrical systems, shall be as if specifically indicated.

D. Materials and equipment installed as part of the permanent installation shall be new unless otherwise indicated or specified, and shall be approved by the Underwriter's Laboratories, inc., for installation in each particular case where standard's have been established.

E. The project includes work with_in a secure space. All wiring to be surface mounted at SCIF perimeter, above raised floors or below drop ceiling. Exposed locations shall be pre-approved the architect prior to rough-in. Exposed wiring at finished areas shall be installed in conduit or surface metal raceway per architects approval. Exposed surfaces shall be primed and finish painted as directed.

A. The Contractor shall provide all labor and materials required to install a completed system of electrical work as indicated on the drawings and/or herein specified. Work includes but is not limited to the following:

1. Power feeders and safety switches.

2. Final connections of mechanical equipment, electrical motors.

A. All work shall conform to the requirements of the latest editions of the following codes, regulations and specifications.

1. National Electrical Code (NFPA 70)

2. National Fire Protection Association (NFPA)

3. Underwriters Laboratories, Inc.

4. Building Code

5. Local and state requirements

A. The Contractor shall submit shop drawings (electronically) and manufacturer's catalog cuts showing all details of all equipment to be furnished.

A. In addition to the guarantee obligations herein before specified in other divisions, the Contractor shall guarantee the system installation free from all mechanical and electrical defects for the period of one year from date of final acceptance by the Owner.

A. The drawings are intended to show the general arrangement of the outlets and equipment. Door swings shall checked for arrangement of switches which shall be, installed on the latch side. Contractor shall check structural plans, mechanical plans and specifications so that he may coordinate his work with these trades.

A. Grounding of all conduit, panelboards, boxes, cabinets and equipment shall conform to the requirements of the latest edition of the National Electric Code.

B. All branch circuits shall include a bonded raceway and conductor.

Equipment ground per NFPA 70, article 250 in addition to tick marks indicated on wiring.

A. Not Applicable.

A. All power wiring shall be installed and connected under this section, unless already provided by on the equipment.

ELECTRICAL SPECIFICATIONS

13. PULL-BOXES AND JUNCTION BOXES:

15. LIGHTING FIXTURES:

14. WIRING DEVICES:

11. WIRING METHODS:

12. OUTLET BOXES:

10. CONDUCTORS:

A. All secondary conductors shall be copper, 98% conductivity covered with 600 volt standard type THW or THHN Insulation. AWG size shall be per NFPA 70 or larger where indicated on the plans.

B. All wiring shall be in strict accordance with the latest edition of the National Electrical Code.

C. All wire number 8 and larger shall be stranded.

D. A color coding system shall be used throughout the building network of feeders and circuits and used as a basis of balancing the load within 10%.

E. Neutral conductors for isolated ground circuits shall be dedicated or sized 1.73 times larger for shared neutral circuits.

F. Upon completion of branch circuit wiring, the Contractor shall check and adjust circuit breaker arrangements to assure system load balance is within +10% or -10% across all three phases.

A. Branch circuit and feeders rated shall be conductors ran in conduit.

B. Conduit and wire sizes shall be per NFPA 70 or larger as indicated on the plans.

C. Type MC Cable is acceptable for branch circuits, in concealed areas or utility rooms

A. Outlet boxes in concealed locations shall be galvanized stamped steel of sizes required by the NEC.

B. Boxes in exposed locations shall be cast, with gasketed cover.

C. Provide covers for all boxes.

A. Pull-boxes shall be provided as shown or wherever required to facilitate pulling of wires and cables, or as junction points. All such boxes shall be installed in accessible locations.

A. 20 AMP rated receptacles shall be used for all dedicated 20 AMP circuit connections per NFPA 70 requirements.

A. Not Applicable.

4. CUTTING AND PATCHING:

3. OUTAGES:

A. All electrical/telephone service work which will interfere with the normal use of occupied areas in any manner, shall be done at such times as shall be mutually agreed upon by the Contractor and the Owner.

B. Unless otherwise specified, outages any services, required for the performance of this contract and affecting areas other than the immediate work area shall be scheduled at least tHIRTY (30) days in advance. All such outages shall be performed on other than normal duty hours.

C. Outages during business hours must be approved by the treasury prior to commencement of the work.

A. Cutting and patching are not anticipated for this scope of work.

B. All pull boxes with-In SCIF must be able to be secured/locked or visible seal attached to detect the box has been opened.

DRAWING NO. :

SRBR NO. :

DATE :

REVISION :

SHEET TITLE :

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SRBR No: 25111A

CONSTRUCTION SET 03-19-2026

“Professional Certification. I hereby certify that these documents were prepared or approved by me, and that I am a duly licensed professional engineer under the laws of the state of , License No. , Expiration Date: .”

PE905594

8-31-2026

Washington DC

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25111

03-19-2026

E201

ELECTRICAL

SCHEDULES

AND

SPECS

POWER DISTRIBUTION DIAGRAM

NO SCALE

SWITCHBOARD 'SWBNC-0' (E)

277/480V - 3PH, 4W

MAIN SWITCHBOARD

(EMERGENCY POWER)

(E)

PANEL

'MENC-0'

(E)

3/600

MCB

(E)

3/600 (E)

3/800

MCB

(E)

SWITCHBOARD 'EMBNC-0' (E)

277/480V - 3PH, 4W

MAIN SWITCHBOARD

(NORMAL POWER)

(E)

PANEL

'EMENC-0A'

(E)

3/225

MCB

(E)

3/225 (E)

3/800

MCB

(E)

TAP

BOX

(N)

(X)

(N)

CRAC

9-1A (R)

CRAC

9-1 (R)

(E) (E)

SCIF EMI

FILTERS (N)

#6 GND TO TELECOM

BUS BAR (N)

VAULT 9E & 9D

SCIF PERIMETER

CIRCUIT TO BE

DIRECTED TO

EMERGENCY POWER