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1 <br />NOTES: <br />ENCLOSURE1 <br />GROUNDING ELECTRODE CONDUCTOR TO BE BONDED TO 5/8" X 8'-0" <br />COPPER CLAD GROUND ROD PER NEC 250.52(A)(5), 250.53(A), AND 250.68. <br />(TYPICAL) <br />PROVIDE MAIN BONDING JUMPER PER NEC 250.24(1)(4), 250.28(C), AND <br />250.8(7). <br />REFER TO SINGLE LINE DIAGRAM ON SHEET E3.0 FOR EQUIPMENT <br />GROUNDING CONDUCTOR SIZING. <br />DXL8-MV-SWGR-1 <br />1 <br />A. GROUNDING SCHEMATIC TO BE READ IN CONJUNCTION WITH SINGLE LINE. <br />REFER TO SHEET E2.0 FOR EQUIPMENT CONDUCTOR SIZING. <br />2 <br />GND. <br />DXL8-XFMR-1 <br />GND. <br />DXL8-LVSB-1480/277V, 4W, 3PH SWITCHBOARD <br />GROUNDING <br />SYSTEM <br />3/0AWG CU <br />1 <br />GND. <br />DISTRIBUTIONINCOMING <br />GND. <br />GND. <br />DSD5-LV-PNL-XX (208V) <br />GND. <br />TYPICAL 208V PANEL <br />REFER TO SITE PLANS <br />FOR QUANTITIES <br />DSD5-LV-XFMR-XX480V-208Y/120V <br />DXL8-PNL-9 <br />GND. <br />TYPICAL L3 CHARGER <br />(480V) <br />GND <br />TYPICAL L2 CHARGER <br />(208V) <br />GND. <br />GROUNDING <br />ELECTRODE <br />2 <br />NE <br />U <br />T <br />. <br />NE <br />U <br />T <br />. <br />NE <br />U <br />T <br />. <br />3 <br />3 3 <br />3 <br />3 3 <br />3 <br />GROUND BUSHING <br />WITH LISTED LAY IN <br />LUGLOCKNUT <br />COMPRESSION <br />FITTING <br />METAL CONDUIT <br />CONDUCTORS <br />EQUIPMENT <br />GROUNDING <br />CONDUCTOR <br />ENCLOSURE <br />CONTINUOUS <br />GROUND STRIP <br />INSULATION AT LUG <br />REBAR MUST BE AT MINIMUM 20' <br />CONTINUOUS. EXTEND REBAR USING <br />STEEL TIE WIRES OR WELDING PER <br />NEC 250.52(3)(1) <br />GROUNDING ELECTRODE <br />CONDUCTOR (GEC) TO GROUND <br />BAR IN EQUIPMENT <br />CONCRETE EQUIPMENT PAD <br />2" MIN <br />A MINIMUM OF 2" CONCRETE <br />ENCASEMENT REQUIRED FOR <br />ELECTRODE <br />NTS2CONCRETE ENCASED ELECTRODE <br />MV EQUIPMENT PADS <br />BOND EQUIPMENT GROUNDING <br />ELECTRODE (EGC) TO <br />TRANSFORMER <br />BOND GEC TO CONCRETE ELECTRODE <br />USING LISTED REBAR GROUNDING <br />CONNECTOR. GEC AND OR SPLICED REBAR <br />TO BE 20' CONTINUOUS <br />BURY GROUND RING TO A MINIMUM DEPTH OF 30". <br />MIN OF 2 AWG BARE COPPER. SIZE TO BE PER THE <br />NEC 250.66(C) <br />ALL WIRE, CONNECTORS, RODS, AND OTHER GROUNDING <br />EQUIPMENT SHALL BE LISTED FOR DIRECT BURIAL AND LISTED FOR <br />USE IN GROUNDING SYSTEMS. <br />ATTACHMENT TO GEC, USE TEST <br />WELL. <br />NTS1MV TRANSFORMER GROUND RING <br />NTS3480:208 TRANSFORMER GROUNDING <br />1. ALL GROUNDING/BONDING CONNECTIONS NOT TERMINATED INSIDE EQUIPMENT SHALL BE MADE USING IRREVERSIBLE COMPRESSION OR EXOTHERMIC CONNECTIONS <br />OR OTHER UL LISTED NEC COMPLIANT MEANS. <br />2. ALL METAL EQUIPMENT, ENCLOSURES, CONDUITS, CABINETS, BOXES, AND RECEPTACLES SHALL BE BONDED TO THE GROUNDING SYSTEM. BOND EXTERIOR METALLIC <br />CONDUITS, INCLUDING THOSE INTERRUPTED BY HANDHOLES, NON-METALLIC JUNCTIONS, OR TRANSITIONS, TO MAINTAIN ELECTRICAL CONTINUITY. WHERE METAL <br />CONDUITS TERMINATE IN ENCLOSURES WITHOUT CONTINUITY, PROVIDE A BONDING JUMPER FROM THE ENCLOSURE GROUND BUS TO THE CONDUIT. <br />3. ALL GROUNDING ELECTRODES SHALL CONSIST OF COPPER OR COPPERCLAD DRIVEN GROUND RODS NO SMALLER THAN 5/8” X 8' AND HAVE RESISTANCE TO EARTH OF <br />25 OHMS OR LESS. IF RESISTANCE OF 25 OHMS OR LESS TO EARTH CANNOT BE ACHIEVED, THEN A SUPPLEMENTAL ELECTRODE SHALL BE DRIVEN AS PER NEC 250.53. IF <br />MULTIPLE GROUND RODS ARE DRIVEN, THEY SHALL BE SPACED NOT LESS THAN 6 FT APART. <br />4. CONTRACTOR SHALL GROUND ALL EQUIPMENT ACCORDING TO MANUFACTURERS INSTRUCTIONS AND PER NEC. <br />5. PROPERLY SIZED EQUIPMENT GROUNDING CONDUCTORS SHALL BE INSTALLED WITH ALL RACEWAYS AND CABLE CONVEYANCES. METALLIC RACEWAY AND CONDUIT <br />CONNECTORS SHALL NOT BE CONSIDERED ADEQUATE GROUNDING. GROUNDING CONDUCTOR SIZES PROVIDED ON CIRCUIT SCHEDULE. <br />6. SYSTEMS OVER 1000V ARE TO BE GROUNDED AS PER NEC 250.180 <br />7. THE SIZE OF THE GROUNDING ELECTRODE CONDUCTOR AND BONDING JUMPER(S) FOR CONNECTION OF GROUNDING ELECTRODES PER NEC TABLE 250.66 <br />8. EQUIPMENT GROUNDING CONDUCTORS AS PER NEC TABLE 250.122. THE EQUIPMENT GROUNDING CONDUCTORS SHALL NOT BE REQUIRED TO BE LARGER THAN THE <br />CIRCUIT CONDUCTORS SUPPLYING THE EQUIPMENT. <br />GROUNDING NOTES <br />GROUNDING DIAGRAM <br />GROUNDING DIAGRAM NOTES <br />MAIN BONDING JUMPER <br />NTS5CONDUIT BODY GROUNDING <br />SYSTEM WITH GROUND BUS + NEUTRAL BUS <br />NTS6 <br />MIN #750KCMIL <br />AWG CU <br />GROUNDING ELECTRODE <br />CONDUCTOR <br />MAIN GROUND BUS <br />EQUIPMENT GROUND BUS <br />NEUTRAL BUS <br />BOND TO ENCLOSURE <br />MIN 3/0 AWG CU <br />SERVICE EQPT ENCLOSURE <br />NTS4MAIN BUILDING GROUND BUS ASSEMBLY <br />INSULATOR <br />TWO HOLE LUG <br />EXOTHERMIC WELD <br />CABLE TO LUG <br />FINISHED FLOOR <br />CONDUIT & GROUND <br />CONDUCTOR TO <br />GROUNDING <br />ELECTRODE <br />CONDUIT & <br />GROUND <br />CONDUCTOR <br />BUSHING <br />GROUND <br />CONDUCTOR <br />18" <br />2" <br />12" <br />(2) 3/8" x 2-1/2" <br />MACHINE BOLTS WITH <br />WASHER MOUNTED <br />ON STUDS. <br />SBJ <br />PRIMARY WINDING <br />DRY TYPE TRANSFORMER <br />A B C <br />277/480V <br />X1 X2 <br />X3 <br />120/208V <br />SECONDARY WINDING <br />GND. <br />XO <br />H1 <br />H2 <br />H3 <br />SSBJ <br />CONTINUOUS GREEN <br />GROUND CONDUCTOR <br />(SSBJ) SIZED PER NEC <br />TABLE 250.102(C)(1). <br />SEE GROUNDING <br />DIAGRAM <br />N <br />EGC <br />SEE SLD GEC <br />800A PNL: #2/0 AWG CU <br />600A PNL: #1/0 AWG CU <br />208/120V <br />SSBJ <br />SBJ - SYSTEM BONDING JUMPER <br />600A PNL: 2/0 AWG CU <br />800A PNL: 2/0 AWG CU <br />GEC <br />GEC TO BOND TO EXISTING BUILDING <br />STEEL THAT IS BONDED TO THE <br />EXISTING GROUNDING ELECTRODE <br />SYSTEM. BOND THE GEC TO OTHER <br />GROUNDING ELECTRODES WHERE <br />AVAILABLE PER NEC 250.64(F). <br />PH: <br />RE <br />V <br />I <br />S <br />I <br />O <br />N <br />DA <br />T <br />E <br />2/ <br />1 <br />9 <br />/ <br />2 <br />5 <br />Ci <br />t <br />y <br /> <br />o <br />f <br /> <br />C <br />a <br />r <br />l <br />s <br />b <br />a <br />d <br /> <br />C <br />o <br />m <br />m <br />e <br />n <br />t <br />s <br />A <br />45 <br />0 <br /> <br />L <br />A <br />M <br />B <br />E <br />R <br />T <br /> <br />A <br />V <br />E <br />, <br /> <br />P <br />A <br />L <br />O <br /> <br />A <br />L <br />T <br />O <br />, <br /> <br />C <br />A <br /> <br />9 <br />4 <br />3 <br />0 <br />6 <br />(8 <br />8 <br />8 <br />) <br /> <br />3 <br />4 <br />2 <br />- <br />7 <br />3 <br />8 <br />3 <br />ORIGINAL SIZE 24"X36" <br />REV: <br />PROJ: <br />DL <br />X <br />8 <br /> <br />E <br />L <br />E <br />C <br />T <br />R <br />I <br />C <br /> <br />V <br />E <br />H <br />I <br />C <br />L <br />E <br /> <br />C <br />H <br />A <br />R <br />G <br />I <br />N <br />G <br /> <br />S <br />T <br />A <br />T <br />I <br />O <br />N <br />S <br />51 <br />5 <br /> <br />E <br />A <br />S <br />T <br /> <br />D <br />Y <br />E <br />R <br /> <br />R <br />O <br />A <br />D <br />SA <br />N <br />T <br />A <br /> <br />A <br />N <br />A <br />, <br /> <br />C <br />A <br /> <br />9 <br />2 <br />7 <br />0 <br />7 <br />BSE14-2 <br />DLX8_EV_OSP <br />ALEXANDER SHORTS <br />PROFESSIONA L ENGINEER <br />ELECTRICALSTATE OF CALIFORNIA <br />E 21782 <br />7/ <br />1 <br />4 <br />/ <br />2 <br />5 <br />Ut <br />i <br />l <br />i <br />t <br />y <br /> <br />t <br />r <br />e <br />n <br />c <br />h <br /> <br />p <br />a <br />t <br />h <br />B <br />9/22/25 <br />SS <br />B <br />J <br /> <br />U <br />p <br />s <br />i <br />z <br />e <br />, <br /> <br />G <br />e <br />n <br />e <br />r <br />a <br />t <br />o <br />r <br /> <br />s <br />e <br />c <br />t <br />i <br />o <br />n <br />C <br />9/ <br />2 <br />2 <br />/ <br />2 <br />5 <br />GROUNDING <br />DETAILS <br />E4.2 <br />IFP C