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A SCALE: NTS
<br />NOT USED
<br />FINISHED FLOOR
<br />B SCALE: NTS
<br />FEEDER TO REMOTE BUILDING / STRUCTURE GROUNDING DETAIL
<br />TELECOMMUNICATION GROUND:
<br />1 # cu., IN CONDUIT TO TELECOMMUNICATIONS
<br />ROOM BACKBOARDS AND GROUNDING BUS BARS. IF
<br />PROVIDED IN PROJECT DRAWINGS, SEE TELECOM
<br />PATHWAYS AND GROUNDING RISER FOR ADDITIONAL
<br />REQUIREMENTS.
<br />GROUNDING ELECTRODE CONDUCTOR:
<br />1 # cu., GROUNDING ELECTRODE CONDUCTOR PER ART. 250.32(E).
<br />EXTENDED FROM SWITCHBOARD GROUND BUS WITH CODE-SIZED EMT,
<br />IMC, OR RIGID CONDUIT AS CONDITIONS DICTATE. TERMINATE FEEDER
<br />EQUIPMENT GROUNDING CONDUCTOR AT THE SWITCHBOARD GROUND
<br />BUS AS WELL - SEE SINGLE LINE.
<br />1 # cu. IN CONDUIT TO EFFECTIVELY
<br />GROUNDED METAL FRAME OF THE BLDG. PER
<br />ART. 250.52(A)(2).
<br />(1) MINIMUM 20 FT. LENGTH OF #4 MINIMUM/
<br />1# BARE COPPER ENCASED IN MINIMUM 2"
<br />OF CONCRETE ALL AROUND PER ART.
<br />250.52(A)(3).GROUNDING ELECTRODE & CONDUCTOR - ALTERNATE:
<br />1 #6 cu., 1/2"C. TO ELECTRODE PER ART. 250.52(A)(4), (A)(5), (A)(6), (A)(7) &
<br />250.53 WHERE NONE OF THE ELECTRODES IN ART. 250.52 (A)(1), (A)(2) &
<br />(A)(3) ARE AVAILABLE.
<br />PROVIDE CONNECTION OF GROUNDING CONDUCTORS/ BONDING JUMPERS PER
<br />ART.250.8 (TYPICAL) USING 2-HOLE CONNECTORS.
<br />TELEPHONE/CATV UTILITY GROUND:
<br />1 # cu. IN CONDUIT TO UTILITY CO.
<br />TELEPHONE/CATV BACKBOARD.
<br />TO GROUND BUS LOCATED WITHIN EACH BUILDING SWITCHBOARD, DISTRIBUTION
<br />BOARD, PANEL BOARD AND/OR FEEDER DISCONNECT FEEDING THE REMOTE
<br />BUILDING OR STRUCTURE.
<br />BONDING JUMPER(S):
<br />PROVIDE BONDING WITH 1 # cu., IN CONDUIT TO NEAREST METAL, WATER PIPE
<br />(HOT, COLD, SPRINKLER, SEWER, BUILDING MOUNTED - INTERIOR OR EXTERIOR ETC),
<br />UNINTENTIONALLY UNGROUNDED BUILDING STEEL, GAS PIPE, HVAC DUCTS IN THE
<br />BUILDING PER ART. 250.104 (A), (B), & (C).
<br />THIS DETAIL APPLIES TO BUILDINGS OR STRUCTURES SUPPLIED BY FEEDERS OR BRANCH CIRCUITS GOVERNED BY ART. 250.32 AND SPECIFICALLY BY ART.
<br />250.32(B)(1) WHERE THE GROUNDED CONDUCTOR IS NOT CONNECTED TO THE GEC IN THE SUPPLIED BUILDING DUE TO THE POSSIBILITY OF PARALLEL CIRCUIT
<br />PATHS FOR NEUTRAL CURRENT. WHERE THE STUCTURE OR BUILDING SUPPLIED IS EXISTING, CONTRACTOR SHALL MAKE EVERY EFFORT TO
<br />EXTEND/RECONNECT EXISTING GROUNDING ELECTRODE(S)/SYSTEM.
<br />MOUNT TO WALL USING STAND-OFF INSULATORS
<br />AND BRACKETS. TYPICAL.
<br />2,000A
<br />0-200A
<br />201-400A
<br />OVER 401A
<br />2,500A
<br />4,000A
<br />3,000A
<br />SERVICE SIZE
<br />SERVICE SIZE
<br />0-1,000A
<br />1,600A
<br />1,200A
<br />#400KCMIL, 1-1/4"C
<br />#4, 3/4"C
<br />#3/0, 3/4"C
<br />#1/0, 3/4"C
<br />G.E.C. SIZE
<br />#500KCMIL, 1-1/4"C
<br />#700KCMIL, 1-1/2"C
<br />#600KCMIL, 1-1/2"C
<br />B.J. SIZE
<br />#300KCMIL, 1"C
<br />#3/0, 3/4"C
<br />#4/0, 1"C
<br />BONDING JUMPER (B.J.) SHALL BE
<br />SIZED AS FOLLOWS:
<br />GROUNDING ELECTRODE CONDUCTOR
<br />SHALL BE SIZED AS FOLLOWS:
<br />TELECOMMUNICATIONS GROUND
<br />CONDUCTOR. MINIMUM SIZE SHALL BE BASED
<br />ON DISTANCE BETWEEN
<br />TELECOMMUNICATIONS ROOM AND SYSTEM
<br />GROUNDING BUS BAR AS FOLLOWS:
<br />LESS THAN 13'
<br />14'-41'
<br />42'-66'
<br />67'-105'
<br />106'-175'
<br />176'+
<br />#6, 3/4"C
<br />#1, 3/4"C
<br />#2/0, 3/4"C
<br />#4/0, 1"C
<br />#300 KCMIL, 1-1/4"C
<br />#500 KCMIL, 1-1/2"C
<br />PROVIDE AT LEAST (3) SPARE DRILLED CONNECTION POINTS.
<br />PROVIDE PERMANENT TAG TO IDENTIFY EACH CONDUCTOR.
<br />1/4"x3"x LENGTH AS REQUIRED. COPPER GROUND BUS OUTSIDE
<br />SWITCHBOARD, DRILLED AND TAPPED AS REQUIRED. PROVIDE PHENOLIC
<br />LABEL INDICATING "MAIN ELECTRICAL SERVICE GROUND". SEE
<br />ELECTRICAL SPECIFICATIONS FOR MORE INFORMATION.
<br />1 # cu., 1"C. INTERCONNECT TO ALL OTHER
<br />ELECTRICAL FEEDERS. PER ART. 250.58.
<br />GROUNDING ELECTRODE & CONDUCTOR:
<br />1 # cu., 3/4"C. TO METAL UNDERGROUND WATER
<br />PIPE (MINIMUM OF 10FT LONG) PER ART. 250.52(A)(1)
<br />WITH A CONNECTION MADE WITHIN 5 FT. OF POINT OF
<br />ENTRANCE INTO THE BUILDING PER ART. 250.68(C)(1).
<br />tk1sc project number: B2305501.000
<br />drawn by:checked by:
<br />drawing no.:
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<br />consultant
<br />agency
<br />owner
<br />date:
<br />drawing title:
<br />description:date:Rev:
<br />tBP project number :
<br />architect
<br />THIS DRAWING AND THE DESIGNS, DEPICTIONS, IDEAS AND OTHER INFORMATION
<br />CONTAINED HEREIN CONSTITUTE UNPUBLISHED WORK OF tBP/ARCHITECTURE AND
<br />SHALL REMAIN THE PROPERTY OF tBP/ARCHITECTURE IN PERPETUITY. NO PART
<br />THEREOF SHALL BE REPRODUCED, DISCLOSED, DISTRIBUTED, SOLD, PUBLISHED OR
<br />OTHERWISE USED IN ANY WAY WITHOUT THE ADVANCED EXPRESS WRITTEN CONSENT
<br />OF tBP/ARCHITECTURE.
<br />ph: 714.667.2700
<br />SANTA ANA, CA 92701
<br />20 CIVIC CENTER PLAZA
<br />SANTA ANA PLANNING AND BUILDING AGENCY
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<br />21125.00
<br />09/06/2023
<br />11870 Pierce Street, Suite 160
<br />Riverside, California 92505
<br />951.299.4160 www.tk1sc.com
<br />Project Leader - Bill Voller
<br />tk1sc Job #: B2305501.000
<br />Electrical Lead - Marie Rothenberger
<br />Revision #0105/30/20251
<br />TRANSFORMER
<br />INFORMATION +
<br />GROUNDING DETAILS
<br />E2-2
<br />1
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