E601-E601_0006.pdf
PDF 220 KB Posted
- Attached to
- GRCA 318719_Temporary WWTP at North Rim Federal contract opportunity
- Solicitation number
- 140P2026R0075
About this file
This document is an electrical single-line diagram for a temporary wastewater treatment facility (WWTP) located at North Rim, Grand Canyon National Park. The diagram illustrates the electrical distribution system and interconnections for the facility's power infrastructure.
The system receives incoming primary power at 24.49 kV from Garkane Energy and distributes it through an automatic transfer switch (ATS) to multiple load centers (MCB1, MCB3, and MCB4). The facility is equipped with a portable generator as backup power with cam lock-type connectors for temporary connections. Power is distributed to several critical components including two wastewater treatment pumps (TWWTP-1 and TWWTP-2) rated at approximately 125 full-load amperes at 480V three-phase, UV treatment units (UV Unit 1, 2, and 3), equipment loads (EQ) at approximately 30 FLA, and a wastewater laboratory panel. The cable schedule details 13 separate cable runs (identified as A through M) using PVC conduit ranging from 2 to 6 inches in diameter, with conductor sizes varying from #6 to 500 kCMIL aluminum URD cables depending on load requirements. General notes emphasize grounding electrode system requirements at every structure, proper cable termination at manufacturer-provided terminals, and disconnection procedures for the portable generator. The MCB1 load analysis indicates a total connected load of 748.9 kVA for the primary MCB1 distribution center.
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Text version
25KV 3PH JUNCTION ENCLOSURE.
(3) 4-POSITION JUNCTION BARS W/
200AMP ELBOW TERMINATIONS AND
200AMP PROTECTIVE CAPS
LA
TRANSFORMER - T1A
24.9kV - 480Y/277 V 5.75% Z 750 kVA
3-PH
100A 30A
ESB-13C
EXIST MEDIUM
VOLTAGE POWER TO WWTP
T-37
200A 3P
150A 3P
200A 3P
25A 3P
1000A 3P
150A 3P
60A 3P
MCB1
480/277 VAC
3Ø, 4W 1000A
NEMA 3R
65KAIC
TWWTP-1 ~125FLA
VOLTAGE:480/3
TWWTP-2 ~125FLA
VOLTAGE:480/3
EQ ~30 FLA
VOLTAGE:480/3
TO MCB4
HYPOCHLORITE / CAUSTIC
STORAGE CONTAINER
TO MCB3
CITRIC ROOM / MEMBRANE
STORAGE CONTAINER
WW LAB (T3B)
60A 3P
UV UNIT 1: PANEL LCP-5101
MTS
480V/3PH
3-POLE
1000AMPS
NEMA 3R
65KAIC
GEN
PORTABLE
GENERATOR
LINE A (N.P.S)
TO ESB-14
(NOT SHOWN)
EXIST 25KV 3PH POWER CABLE
250A 3P
UV UNIT 3: PANEL LCP-5301
60A 3P
UV UNIT 2: PANEL LCP-5201
1000AT
3PH
LSIGA
N
G
N
G
PER. MFR
LSIGA
N
G
T3B 150kVA DRY TYPE
480 - 208/120V
NEMA 3R WITH WEATHERSHIELDS
MANUFACTURER PROVIDED PANEL BOARD
208/120 VAC
3Ø, 4W 400A
WASTE WATER LAB
200A 3P
200A 3P
200A 3P
200A 3P
200A 3P
SURGE
ARRESTER
METER
CAM LOCK TYPE
RECEPTACLES
(MALE)
G
G
PORTABLE
CABLES WITH
CAM LOCK
CONNECTORS.
THREE PER
PHASE.
CAM LOCK TYPE
RECEPTACLES
(FEMALE)
ESB-13 ESB-12
PTS-2
SO
U
R C
E
TR
AN
SF
ER
C
O N
TR
O
L
N.C.
N.O.
N.C.
SPARE
25K PTS-2
SOURCE TRANSFER SWITCH
AT POWER DISTRIBUTION CENTER (PDC)
LINE C (N.P.S)
TO T-35
(NOT SHOWN)
TO T-36
GENERATION BUILDING
(NOT SHOWN)
TO MC-2
INCOMING GARKANE ENERGY PRIMARY 24.49KV POWER
(NOT SHOWN)
CABLE ID FROM TO CONDUIT CABLE
A ESB-13C T1A 6" PVC CONDUIT (3) 1/C 3/0 AL 133% URD CABLE W/ 1/3 CONC NEUTRAL
B T1A ATS 6" PVC CONDUIT 3 SETS [3#500kCMIL, #500kCMIL (N), #3/0 (G)]*
C ATS MCB1 6" PVC CONDUIT 3 SETS [3#500kCMIL, #500kCMIL (N), #3/0 (G)]*
D MCB1 MCB4 3" PVC CONDUIT 1 SET [3#4/0, #4/0 (N), #4 (G)]*
E MCB1 MCB3 3" PVC CONDUIT 1 SET [3#4/0, #4/0 (N), #4 (G)]*
F MCB1 EQ 2" PVC CONDUIT 1 SET [3#8, #8 (N), #6 (G)]*
G MCB1 TWWTP-1 2" PVC CONDUIT 1 SET [3#1/0, #1/0 (N), #6 (G)]*
H MCB1 TWWTP-2 2" PVC CONDUIT 1 SET [3#1/0, #1/0 (N), #6 (G)]*
I MCB1 T3B 3" PVC CONDUIT 1 SET [3#250, #4 (G)]*
J MCB1 UV UNIT 1 2" PVC CONDUIT 1 SET [3#6, #6 (N), #8 (G)]*
K MCB1 UV UNIT 2 2" PVC CONDUIT 1 SET [3#6, #6 (N), #8 (G)]*
L MCB1 UV UNIT 3 2" PVC CONDUIT 1 SET [3#6, #6 (N), #8 (G)]*
M T3B WW LAB PB 6" PVC CONDUIT 2 SETS [3#350kCMIL, #350kCMIL (N), #2/0 (G)]*
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DATE:
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DESIGNED:
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TECH. REVIEW:
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SUB SHEET NO.
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PMIS/PKG NO.
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DRAWING NO.
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SHEET
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OF
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TITLE OF SHEET
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NORTH RIM - GRAND CANYON NATIONAL PARK
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A/E FIRM
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PRIME:
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HDR ENGINEERING, INC.
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PM: MATTHEW GOUGH
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DENVER, CO
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TEMPORARY WWTP
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SINGLE LINE DIAGRAM 1
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AutoCAD SHX Text 182752A
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T. VANG
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T. VANG
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T. MOORE
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MAY 2026
AutoCAD SHX Text 318719
AutoCAD SHX Text E601
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ELECTRICAL
AutoCAD SHX Text KEYNOTES: 1. TERMINATE POWER CABLES AT MANUFACTURER PROVIDED TERMINATE POWER CABLES AT MANUFACTURER PROVIDED TERMINAL BLOCKS. 2. TEMPORARY PORTABLE GENERATOR CONNECTION WITH CAM TEMPORARY PORTABLE GENERATOR CONNECTION WITH CAM LOCK TYPE CONNECTIONS. 3. 100% RATED BREAKER 100% RATED BREAKER 4. INTERCEPT EXISTING MEDIUM VOLTAGE POWER CABLE INTERCEPT EXISTING MEDIUM VOLTAGE POWER CABLE BETWEEN POWER DISTRIBUTION CENTER AND WWTP. SET 3PH JUNCTION ENCLOSURE. EXPOSE EXISTING MEDIUM VOLTAGE POWER CABLE AND REROUTE TO JUNCTION ENCLOSURE ESB-13C. TERMINATE WITH EXISTING POWER CABLE. 5. ABANDON EXISTING MEDIUM VOLTAGE POWER FROM ABANDON EXISTING MEDIUM VOLTAGE POWER FROM INTERCEPTION POINT TO WWTP. 6. MAIN BONDING JUMPER MAIN BONDING JUMPER 7. ALL GROUNDING JUMPER TO BE #4/0 UNLESS OTHERWISE ALL GROUNDING JUMPER TO BE #4/0 UNLESS OTHERWISE SHOWN. SEE DETAIL 3 ON SHEET E503 FOR GROUNDING ELECTRODE SYSTEM DETAIL. 8. DO NOT BOND NEUTRAL AND GROUND TOGETHER. DO NOT BOND NEUTRAL AND GROUND TOGETHER. 9. MAIN BONDING JUMPER.MAIN BONDING JUMPER.
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CABLE/CONDUIT SCHEDULE
AutoCAD SHX Text GENERAL NOTES 1. GROUNDING ELECTRODE SYSTEM IS REQUIRED AT EVERY GROUNDING ELECTRODE SYSTEM IS REQUIRED AT EVERY STRUCTURE AND BUILDING FED FROM MCBS. NEUTRAL IS NOT TO BE BONDED AT THE BUILDING GROUND.
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NOTE: (* COPPER CONDUCTORS WITH XHHW-2 INSULATION)
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JUNE 2026
AutoCAD SHX Text 7/20/2026 Vang, Tou C:\Users\TVANG\DC\ACCDocs\HDR\10350545_NPS_GRCA_N_Rim_Utility_2022\Project Files\CAD_HDR\DRAWINGS\TEMPORARY WASTEWATER\ELECTRICAL\E601-E602.dwg Vang, Tou C:\Users\TVANG\DC\ACCDocs\HDR\10350545_NPS_GRCA_N_Rim_Utility_2022\Project Files\CAD_HDR\DRAWINGS\TEMPORARY WASTEWATER\ELECTRICAL\E601-E602.dwgVang, Tou C:\Users\TVANG\DC\ACCDocs\HDR\10350545_NPS_GRCA_N_Rim_Utility_2022\Project Files\CAD_HDR\DRAWINGS\TEMPORARY WASTEWATER\ELECTRICAL\E601-E602.dwg C:\Users\TVANG\DC\ACCDocs\HDR\10350545_NPS_GRCA_N_Rim_Utility_2022\Project Files\CAD_HDR\DRAWINGS\TEMPORARY WASTEWATER\ELECTRICAL\E601-E602.dwgC:\Users\TVANG\DC\ACCDocs\HDR\10350545_NPS_GRCA_N_Rim_Utility_2022\Project Files\CAD_HDR\DRAWINGS\TEMPORARY WASTEWATER\ELECTRICAL\E601-E602.dwg
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| E601 |
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