N.B: Enter You Detail in White Background Cell

Available Fault Current Calculation (Isc Calculation)Does any GENERATOR Supplay Power To main Service Panel ??

Generator kW:Type of SupplayVoltage Line-Line (V L-L)Voltage Line-Neutral (V L-N)Enter Generator Subtransient (Z)Power FactorNo of Generator in ParallelTotal Generator kva:Secondary Current ( I L-L)Secondary Current ( I L-N)Maximum Generator Short Circuit Current( Line-Line)Maximum Generator Short Circuit Current( Line-Neutral)Do You Have any Motor ContributionsMotor Contributions (Line-Line)

Motor Contributions (Line-Neutral)

Total Short Circuit Current:( ISC Gen)(L-L)Total Short Circuit Current:( ISC Gen)(L-N)

Fault Current Calculation (TRANSFORMER To MAIN PANEL)

Available Utility or Primary KVA(Source).If You Don't Know than select"Unlimited"( Provide By Power supplay Company)

Supply System

Enter transformer KVA ratingSecondary Voltage Line-Line ( V L-L)Secondary Voltage Line-Neutral ( V L-N)Enter transformer impedance (Zt)Transformer CalculationsSecondary Voltage Line-Line ( V L-L)Transformer Secondary Full Current I (L-L)Transformer Secondary Full Current I (L-N)Source Impedance:(Zu)Total Impedance (Zu+Zt)Short Circuit Current at T.C Secondary( ISCa)(L-L)Short Circuit Current at T.C Secondary( ISCa)(L-N)Short Circuit Current (RMS symmeterical)

At Secondary (Line) Main MCCB Line TerminelMaximum Secondary Protection per NEC 450.3(B)Recommended Secondary Breaker RatingLength (L)Type of Conductor(3-Single Conductor cable) or (3 conductor cable)Type of RaceWay

No of Conductor per Phase (N)Size of Phase ConductorSize of Neutral ConductorPhase Conductor Constant ("C")Neutral Conductor Constant ("C")f (L-L)M (L-L)f (L-N)M (L-N)Do You Have any Motor ContributionsMotor Contributions (Line-Line)Motor Contributions (Line-neutral)Fault Current at termination of Main Disconnect (L-L)Fault Current at termination of Main Disconnect (L-N)

Fault Cuurent Calculation ( Main Panel To Branch Circuit Panel)

Feeder SystemFault Circuit Current at Main Service Panel(L-L)Fault Circuit Current at Main Service Panel(L-N)Volyage Line-Line (V L-L)Volyage Line-Neutral (V L-N)

Length (L)Type of Conductor(3-Single Conductor cable) or (3 conductor cable)Type of RaceWayNo of Conductor per Phase (N)Size of Phase ConductorSize of Neutral ConductorPhase Conductor Constant ("C")Neutral Conductor Constant ("C")f (L-L)M (L-L)f (L-N)M (L-N)Do You Have any Motor ContributionsMotor Contributions (Line-Line)Motor Contributions (Line-neutral)Fault Current at termination of Main Disconnect (L-L)Fault Current at termination of Main Disconnect (L-N)

Fault Cuurent Calculation ( Branch Circuit Panel To Outlet)

Feeder SystemFault Circuit Current at Main Service Panel(L-L)Fault Circuit Current at Main Service Panel(L-N)Volyage Line-Line (V L-L)Volyage Line-Neutral (V L-N)

Length (L)Type of Conductor(3-Single Conductor cable) or (3 conductor cable)

Type of RaceWayNo of Conductor per Phase (N)Size of Phase ConductorSize of Neutral ConductorPhase Conductor Constant ("C")Neutral Conductor Constant ("C")f (L-L)M (L-L)f (L-N)M (L-N)Do You Have any Motor ContributionsMotor Contributions (Line-Line)Motor Contributions (Line-neutral)Fault Current at termination of Main Disconnect (L-L)Fault Current at termination of Main Disconnect (L-N)

Cable/Conductor Unit:

Available Fault Current Calculation (Isc Calculation)Yes

300 KwThree Phase 1.732

480 Volts240 Volts5.75 %0.83

1125 Kva1353 Amp2706 Amp

23534 Amp1556185 Amp

No0 Amp

0 Amp

23534 Amp1556185 Amp

Fault Current Calculation (TRANSFORMER To MAIN PANEL)

Unlimited Kva

Three Phase 3 1.7323000 Kva Kva Base440 Volts230 Volts5.75 %

440 Volts3937 Amp5905 Amp I (L-N)=1.5* I (L-L)

0.0000 Zu=Kva Base/Kva Source0.057568463 Amp ISCa=Tra.FLC(L-L)/(Zu+Zt)

102694 Amp ISCa=Tra.FLC(L-N)/(Zu+Zt)

68463 Amp

4921 Amp5000 Amp100 Meter

Copper 1Three Conductor Cable 3 Non-metalic Raceway 5

Design By : Jignesh.Parmar. www.jiguparmar.com jiguparmar@yahoo.com

12.5 mm2 MM2 14 AWG4 mm2 MM2 12 AWG

389617

69.2785 1.732 1.7328*L*IscL-L/C*N*V L-L0.0142 1/1+f

125.3369 1.732 1.7328*L*IscL-N/C*N*V L-N0.0079 1/1+f

No0 Amp0 Amp

974 Amp813 Amp

Three Phase Feeder System

Three Phase 1.73224508 Amp Enter Fault Current Directly if You Know (L-L)

1556998 Amp Enter Fault Current Directly if You Know (L-N)440 Amp230 Amp

100 MeterCopper 1

Three Conductor Cable 3 Non-metalic Raceway 5

14 mm2 MM2 12 AWG

10 mm2 MM2 8 AWG617

156015.6358 1.732 1.7328*L*IscL-L/C*N*V L-L0.0601 1/1+f

751.5943 1.732 1.7328*L*IscL-N/C*N*V L-N0.0013 1/1+f

No0 Amp0 Amp

1473 Amp2069 Amp

Single Phase Feeder System

Single Phase 10 Enter Fault Current Directly if You Know (L-L)

2069 Enter Fault Current Directly if You Know (L-N)0

230

100 MeterAluminium 2

Three Conductor Cable 3

Non-metalic Raceway 51

507 mm2 MM2 1000 kcmil507 mm2 MM2 1000 kcmil

32938329380.0000 2 1.7328*L*IscL-L/C*N*V L-L1.0000 1/1+f0.0546 2 1.7328*L*IscL-N/C*N*V L-N0.9482 1/1+f

No0 Amp0 Amp0 Amp

1962 Amp

Enter Fault Current Directly if You Know (L-L)Enter Fault Current Directly if You Know (L-N)

Enter Fault Current Directly if You Know (L-L)Enter Fault Current Directly if You Know (L-N)

Gen p.f Volts parallal250 0.6 208 1300 0.65 480 2375 0.7 3400 0.75 4500 0.8 5600 0.85 6750 0.9900 0.95

1000 11200 Meter1300

1800

2000240025003000

Utility / Primary KVA35,000 3 Phase 20 14 AWG 2.5 mm2 14 AWG50,000 3 Phase 48 12 AWG 4 mm2 12 AWG65,000 10 AWG 6 mm2 10 AWG75,000 Three Phase 8 AWG 10 mm2 8 AWG100,000 Single Phase 6 AWG 16 mm2 6 AWG150,000 4 AWG 25 mm2 4 AWG250,000 Yes 3 AWG 30 mm2 3 AWG500,000 No 2 AWG 35 mm2 2 AWGUnlimited 1 AWG 50 mm2 1 AWG

O AWG 55 mm2 O AWG Non-metalic Raceway OO AWG 70 mm2 OO AWG

Metalic Raceway OOO AWG 95 mm2

Aluminium in Non-metalic OOOO AWG 120 mm2Alumnium in Metalic Race 250 kcmil 127 mm2 250 kcmil

300 kcmil 152 mm2 300 kcmil3 Single Conductor Cable 350 kcmil 177 mm2 350 kcmilThree Conductor Cable 400 kcmil 203 mm2 400 kcmilAluminium 500 kcmil 253 mm2 500 kcmilCopper 600 kcmil 304 mm2 600 kcmil

750 kcmil 355 mm2 750 kcmil

1000 kcmil 507 mm2

MM2 1AWG/Kcmill

OOO AWG

OOOO AWG

1000 kcmil

AWG mm2 Maximum Fuse Size(Amp) AWGOO 70 400 26OO 55 325 251 50 250 242 35 200 234 25 125 226 16 80 218 10 50 20

10 6 30 1912 4 20 1814 2.5 15 1716 1.5 7.5 16

1412

Factor of Max.Utilization Ku 10Motor 0.75 8

Ltg 1 642

Demand Factor Ks 1Ltg 1 O

Heating/AC 1 OOPower Socket 2 OOO

Lift/Hoist 0.6 to 1 OOOOMotor 0.6

Maximum Circuit Length in mtr for Cu conductor ( for Alu multiply 0.62)

1.5 2.5 4 6

50 100 167 267 40063 79 133 212 31780 63 104 167 250100 50 83 133 200125 40 67 107 160160 31 52 83 125200 25 42 67 100250 20 33 53 80320 16 26 42 63400 13 21 33 50500 10 17 27 40560 9 15 24 36630 8 13 21 32700 7 12 19 29800 6 10 17 25875 6 10 15 231000 5 8 13 201120 4 7 12 181250 4 7 11 161600 5 8 13

Operating Cuurent Im of the Instantaneous Tripping

element(A)

2000 4 7 102500 5 83200 4 64000 55000 4630080001000012500

Maximum Length of Copper Conductor circuit in Meter protcted by B Type C.BRated Current of C.B (A) 1.5 2.5 4 6

6 200 333 533 80010 120 200 320 48016 75 125 200 30020 60 100 160 24025 48 80 128 19232 37 62 100 15040 30 50 80 12050 24 40 64 9663 19 32 51 7680 15 25 40 60100 12 20 32 48125 10 16 26 38

Maximum Length of Copper Conductor circuit in Meter protcted by CType C.BRated Current of C.B (A) 1.5 2.5 4 6

6 100 167 267 40010 60 100 160 24016 37 62 100 15020 30 50 80 12025 24 40 64 9632 18 31 50 7540 15 25 40 6050 12 20 32 4863 9.5 16 26 3880 7.5 12.5 20 30100 6 10 16 24125 5 8 13 19

Maximum Length of Copper Conductor circuit in Meter protcted by D Type C.BRated Current of C.B (A) 1.5 2.5 4 6

1 429 7142 214 357 571 8573 143 238 381 5714 107 179 286 4296 71 119 190 286

10 43 71 114 17116 27 45 71 10720 21 36 57 8625 17 29 46 6932 13 22 36 54

40 11 18 29 4350 9 14 23 3463 7 11 18 2780 5 9 14 21100 4 7 11 17125 3 6 9 14

Short circuit Current at T.C Secondary3 Ph T.C Rating (KVA) Rated FLC(Amp) ISC at Secondary

50 70 1391100 139 2782160 223 4452200 278 5565250 348 6956315 448 8765400 556 11130500 696 13912600 836 16714700 975 19500800 1115 22286900 1254 25072

1000 1393 278601250 1741 348201500 1089 417802000 1786 557202500 3482 696403000 4179 83580

MCCB/ELCB Size0.5 6

mm2 1 6 Max Amp mm2 AWG 3cx1.50.13 2 6 2.2 2.7 0.13 26 3cx2.50.16 4 6 2.7 3.5 0.16 25 3cx40.2 6 10 3.5 2.7 0.2 24 3cx6

0.26 10 16 4.7 3.5 0.26 23 3cx100.33 16 20 7 4.7 0.33 22 3cx160.41 20 25 9 7 0.41 21 3cx250.52 25 32 11 9 0.52 20 3cx350.65 32 40 14 11 0.65 19 3cx500.82 40 45 16 14 0.82 18 3cx701.04 45 50 19 16 1.04 17 3cx951.5 50 63 22 19 1.5 16 3cx1202.5 63 80 32 22 2.5 14 3cx1504 80 100 41 32 4 12 3cx1856 100 125 55 41 6 10 3cx225

10 125 225 64 55 10 816 225 600 73 64 16 625 600 800 135 73 25 435 800 1600 181 135 35 250 1600 2000 211 181 50 155 2000 3000 245 211 55 O70 3000 3200 283 245 70 OO95 3200 4000 328 283 95 OOO

120 4000 5000 380 328 120 OOOO5000 6000 380 1206000 6000

Maximum Circuit Length in mtr for Cu conductor ( for Alu multiply 0.62)

10 16 25 35 50 70 95 120 150

417333267 427208 333167 267 417133 213 333 467104 167 260 365 49583 133 208 292 39667 107 167 233 31760 95 149 208 283 41763 85 132 185 251 37048 76 119 167 226 333 45242 67 104 146 198 292 39638 61 95 133 181 267 362 45733 53 83 117 158 233 317 400 43530 48 74 104 141 208 283 357 38827 43 67 94 127 187 253 320 34821 33 52 73 99 146 198 250 272

17 27 42 58 79 117 158 200 21713 21 33 47 63 93 127 160 17411 17 26 36 49 73 99 125 1368 13 21 29 40 58 79 100 1097 11 17 23 32 47 63 80 875 8 13 19 25 37 50 63 694 7 10 16 20 29 40 50 54

5 8 12 16 23 32 40 434 7 9 13 19 25 32 35

Maximum Length of Copper Conductor circuit in Meter protcted by B Type C.B10 16 25 35 500 0 0

800 0 0500 800 0400 640 0320 512 800250 400 625 875200 320 500 700160 256 400 560 760127 203 317 444 603100 160 250 350 47580 128 200 280 38064 102 160 224 304

Maximum Length of Copper Conductor circuit in Meter protcted by CType C.B10 16 25 35 50667400 640250 400 625 875200 320 500 700160 256 400 560 760125 200 313 438 594100 160 250 350 47580 128 200 280 38064 102 159 222 30250 80 125 175 23840 64 100 140 19032 51 80 112 152

Maximum Length of Copper Conductor circuit in Meter protcted by D Type C.B10 16 25 35 50

952714476 762286 457 714179 286 446 625 848143 229 357 500 679114 183 286 400 54389 143 223 313 424

71 114 179 250 33957 91 143 200 27145 73 113 159 21536 57 89 125 17029 46 71 100 13623 37 57 80 109

Maximum Circuit Length in mtr for Cu conductor ( for Alu multiply 0.62)

185 240

459411321 400

257 320206 256161 200128 160103 12882 10264 8051 6441 51

"C" For Copper conductor. "C" For Allu conductor.

mm2 AWG/Kcmill

3 Single Conductor 3 Conductor Cable

AWG/Kcmill600V 600V

Steel Nonmagnetic Steel

2.5 mm2 14 AWG 389 389 389 389 14 AWG4 mm2 12 AWG 617 617 617 617 12 AWG6 mm2 10 AWG 981 982 982 982 10 AWG

10 mm2 8 AWG 1557 1559 1559 1560 8 AWG16 mm2 6 AWG 2425 2430 2431 2433 6 AWG25 mm2 4 AWG 3806 3826 3830 3838 4 AWG30 mm2 3 AWG 4774 4811 4820 4833 3 AWG35 mm2 2 AWG 5907 6044 5989 6087 2 AWG50 mm2 1 AWG 7293 7493 7454 7579 1 AWG55 mm2 O AWG 8925 9317 9210 9473 O AWG70 mm2 OO AWG 10755 11424 11245 11703 OO AWG95 mm2 OOO AWG 12844 13923 13656 14410 OOO AWG

120 mm2 OOOO AWG 15082 16673 16392 17483 OOOO AWG127 mm2 250 kcmil 16483 18594 18311 19779 250 kcmil152 mm2 300 kcmil 18177 20868 20617 22525 300 kcmil177 mm2 350 kcmil 19704 22737 22646 24904 350 kcmil203 mm2 400 kcmil 20566 24297 24253 26916 400 kcmil253 mm2 500 kcmil 22185 26706 26980 30096 500 kcmil304 mm2 600 kcmil 22965 28033 28752 32154 600 kcmil355 mm2 750 kcmil 24137 29735 31051 34605 750 kcmil507 mm2 1000 kcmil 25278 31491 33864 37197 1000 kcmil

Maximum Length of Copper Conductor circuit in Meter protcted by B Type C.B

1.5 2.5 4 6 10 16

6 200 333 533 800 0 010 120 200 320 480 800 016 75 125 200 300 500 80020 60 100 160 240 400 64025 48 80 128 192 320 51232 37 62 100 150 250 40040 30 50 80 120 200 32050 24 40 64 96 160 25663 19 32 51 76 127 20380 15 25 40 60 100 160100 12 20 32 48 80 128125 10 16 26 38 64 102

Maximum Length of Copper Conductor circuit in Meter protcted by CType C.B

1.5 2.5 4 6 10 16

6 100 167 267 400 66710 60 100 160 240 400 64016 37 62 100 150 250 40020 30 50 80 120 200 32025 24 40 64 96 160 25632 18 31 50 75 125 20040 15 25 40 60 100 160

Nonmagnetic

Rated Current of C.B (A)

Rated Current of C.B (A)

50 12 20 32 48 80 12863 9.5 16 26 38 64 10280 7.5 12.5 20 30 50 80100 6 10 16 24 40 64125 5 8 13 19 32 51

Maximum Length of Copper Conductor circuit in Meter protcted by D Type C.B

1.5 2.5 4 6 10 16

1 429 7142 214 357 571 8573 143 238 381 571 9524 107 179 286 429 7146 71 119 190 286 476 76210 43 71 114 171 286 45716 27 45 71 107 179 28620 21 36 57 86 143 22925 17 29 46 69 114 18332 13 22 36 54 89 14340 11 18 29 43 71 11450 9 14 23 34 57 9163 7 11 18 27 45 7380 5 9 14 21 36 57100 4 7 11 17 29 46125 3 6 9 14 23 37

Rated Current of C.B (A)

"C" For Allu conductor.

3 Single Conductor 3 Conductor Cable 0.5 1600V 600V 1 2

Steel Steel 2 4

237 237 237 237 4 6376 376 376 376 6 10599 599 599 599 10 16951 952 952 952 16 20

1481 1482 1482 1482 20 322346 2350 2351 2353 32 452952 2961 2963 2966 45 503713 3730 3734 3740 50 634645 4678 4686 4699 63 805777 5838 5852 5876 80 1007187 7301 7327 7373 100 2258826 9110 9077 9243 225 600

10741 11174 11185 11409 600 80012122 12862 12797 13236 800 160013910 14923 14917 15495 1600 200015484 16813 16795 17635 2000 300016671 18506 18462 19588 3000 320018756 21391 21395 23018 3200 400020093 23451 23633 25708 4000 500021766 25976 26432 29036 5000 600023478 28779 29865 32938 6000 6000

Maximum Length of Copper Conductor circuit in Meter protcted by B Type C.B

25 35 50

0000

800625 875500 700400 560 760317 444 603250 350 475200 280 380160 224 304

Maximum Length of Copper Conductor circuit in Meter protcted by CType C.B

25 35 50

625 875500 700400 560 760313 438 594250 350 475

MCCB/ELCB

Nonmagnetic

Nonmagnetic

200 280 380159 222 302125 175 238100 140 19080 112 152

Maximum Length of Copper Conductor circuit in Meter protcted by D Type C.B

25 35 50

714446 625 848357 500 679286 400 543223 313 424179 250 339143 200 271113 159 21589 125 17071 100 13657 80 109

AWG mm2mm2 AWG/Kcmill mm226 0.13

25 0.16

24 0.2 2.5 mm2 14 AWG 2.5 mm2

23 0.26 4 mm2 12 AWG 4 mm222 0.33 6 mm2 10 AWG 6 mm2

21 0.41 10 mm2 8 AWG 10 mm2

20 0.52 16 mm2 6 AWG 16 mm219 0.65 25 mm2 4 AWG 25 mm218 0.82 30 mm2 3 AWG 30 mm217 1.04 35 mm2 2 AWG 35 mm216 1.5 50 mm2 1 AWG 50 mm214 2.5 55 mm2 O AWG 55 mm212 4 70 mm2 OO AWG 70 mm210 6 95 mm2 OOO AWG 95 mm28 10 120 mm2 OOOO AWG 120 mm26 16 127 mm2 250 kcmil 127 mm24 25 152 mm2 300 kcmil 152 mm22 35 177 mm2 350 kcmil 177 mm21 50 203 mm2 400 kcmil 203 mm2O 55 253 mm2 500 kcmil 253 mm2

OO 70 304 mm2 600 kcmil 304 mm2OOO 95 355 mm2 750 kcmil 355 mm2

OOOO 120 507 mm2 1000 kcmil 507 mm2

6 0.507614213 MM23.0402 AWG/Kcmill

0.451127822.706766917