HomeMy WebLinkAbout008 Electrical LegendPOSITION OF
SUPPORT WHEN
REQUIRED
NOTE:
POSITION SERVICE TAKEOFF MIDWAY
BETWEEN TRANSFORMER HANGER
BRACKETS
POSITION OF NEUTRAL
NEUTRAL
MATERIAL QTY ITEM
c 2 BOLT, MACHINE, 5/8" X REQ'D LENGTH
d 2 WASHER, SQUARE, 2 1/4"
p CONNECTORS, COMPRESSION TYPE, AS REQ'D
an 1 TRANSFORMER, 12.47 kV, SELF-PROTECTED
MATERIALQTY ITEM
ap 1 CLAMP, HOT LINE
av
1
JUMPERS, STRANDED, AS REQ'D
bv ROD, ARMOR (AS REQ'D)
ek 2 LOCKNUTSXan
c-d-ek
p
ap-bv
av
an
2'-6"841'-7"
av 3'-6"1'-6"min.
RECONNECT
EXISTING
SECONDARY
NEW SECONDARY TO
WATER METER BUILDING.
PROVIDE DRIP LOOP AS
SHOWN AND CAP TOP OF
CONDUIT.
PROVIDE SECONDARY
BUSHINGS TO
ACCOMMODATE TWO
SERVICES
1SN
1SN
120/240V
1PH, 3W
100A
PANEL P1
TRANSITION DOWN POLE
TO UNDERGROUND
NEW 120/240V, 1PH, 3W, 25 KVA
POLE-MOUNT XFMR
SEE DETAIL 5
GROUND PER
GROUNDING DETAIL
MAIN DISCONNECT
SE RATED, NEMA 3R
120/240V, 1PH, 3W
100AS / 100AF
5,038 AIC
RE-CONNECT EXISTING SECONDARY TO
NEW TRANSFORMER AS REQUIRED.
PROVIDE SECONDARY BUSHINGS
APPROPRIATE FOR FEEDING TWO
SERVICES AS SHOWN
SPD
N
G
BOND NEUTRAL TO GND
AT THIS LOCATION ONLY
INCOMING SERVICE NEUTRAL
AND EQUIPMENT GROUND
CONDUCTORS
#6 CU
#6 CU
METAL UG
WATER SERVICE BUILDING STEEL
IN CONTACT WITH
EARTH (10' MIN)
OR WHERE STEEL
COLUMN BOLTS ARE
CONNECTED TO
UFER ELECTRODE
(WHERE APPLICABLE)
UFER GND
GROUNDING CONDUCTOR:
TIE TO A MIN. 20FT, #5A36 ROD OR
20-FT #4 BARE CU CONDUCTOR.
JOIN BY EXOTHERMIC WELDING
PROCESS. LOCATE BELOW
SERVICE ENTRANCE MAIN
DISCONNECT. WIRE TIE TO
STRUCTURAL REBAR IN FOOTING.
FLOOR SLAB
FOUNDATION WALL
FOOTING
REBAR (TYP)
10'
GND
RODS
MAIN DISCONNECT
WIDTH 2"4"24" MIN.RESURFACE TO MATCH EXISTING.
PROVIDE NEW CONCRETE, ASPHALT,
SEED, OR EXISTING SOD AS
REQUIRED. SEE SPECS FOR
MATERIAL AND INSTALLATION
REQUIREMENTS.
SAND OR CLEAN SOIL
CONDUIT(S) AND WIRE
COMPACTED
BACKFILL
WARNING TAPE
UNDISTURBED EARTH
NOTES:
1. WIDTH: MINIMUM 6"
2. WHERE POSSIBLE PUSH CONDUIT UNDER SIDEWALKS AND DRIVES TO AVOID EXCAVATION.
3. CONTRACTOR MAY USE BORING MACHINE IN LIEU OF TRENCHING WHERE CONDITIONS
PERMIT. EQUIPMENT AND CONDUIT SHALL BE PRE-APPROVED BY ARCHITECT/ENGINEER.
EXISTING 120/240V, 1PH, 3W, 15 KVA
POLE-MOUNT XFMR
RETIRE AND REPLACE WITH NEW
120/240V, 1PH, 3W, 25 KVA
POLE-MOUNT XFMR
PER DETAIL 2
EXISTING 120/240V, 1PH, 3W
SECONDARY TO REMAIN. RECONNECT
TO NEW XFMR AS REQUIRED.
REV. DESCRIPTION DATE
REVIEWED BY:
DRAWN BY:
SHEET
DATE
SHEET TITLEMONTANASTATE UNIVERSITYMSU-CPDC
MONTANA STATE UNIVERSITY
BOZEMAN, MONTANA
PHONE: 406.994.5413
FAX: 406.994.5665
MMI#0747.075AES BART FARMCITY WATER SERVICE95% CONSTRUCTION DOCUMENTSRPM
MJS
ELECTRICAL DETAILS
E0.2
11-11-2021
PPA#20-0116
N.T.S.5 SINGLE-PHASE POLE-MOUNT TRANSFORMER DETAIL
N.T.S. 2 NEW ONE LINE DIAGRAM
N.T.S.3 GROUNDING AND BONDING RISER DIAGRAM
N.T.S.4 ELECTRICAL TRENCH DETAIL
1SN 100 3W 1 1-1/2"2#2 1#2 1#6
CONDUIT PHASE QTY
AND AWG
NEUTRAL
AWG
GROUND
AWG
FEEDER
NUMBER AMPS
WIRE QTY
PER
CONDUIT
SETS IN
PARALLEL
75 DEG COPPER
FEEDER NUMBER KEY:
N = INCLUDES NEUTRAL CONDUCTOR
S = SINGLE PHASE
NOTE: GROUNDING CONDUCTOR IS SIZED ACCORDING TO NEC
250.122 TABLE, UNLESS FEEDER NUMBER IS FOLLOWED BY AN
ASTERISK (*) INDICATING THAT THE GROUNDING CONDUCTOR IS
SIZED ACCORDING TO NEC 250.66 TABLE.
SCHEDULE IS BASED ON 75 DEGREE C. COPPER CONDUCTORS IN NEC 310.60 TABLE.
FEEDER SCHEDULE - COPPER
N.T.S. 1 EXISTING ONE LINE DIAGRAM
02/01/22
21450 MSU AES
Bart Farm Water
Service Bldg.
MOD