N.B: Enter You Detail in White Background Cell
Available Ava ilable Fault Current Calculation (Isc Calculation) Does any GENERATOR Supplay Power To main Service Panel ?? Generator kW: Type of Supplay Voltage Line-Line (V L-L) Voltage Line-Neutral (V L-N) Enter Generator Subtransient (Z) Power Factor No of Generator in Parallel Total 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 Contributions Motor 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 Available Utility or Primary KVA(Source).If You Don't Know than select"Unlimited" ( Provide By Power supplay Company) Supply System Enter transformer KVA rating Secondary Voltage Line-Line ( V L-L) Secondary Voltage Line-Neutral ( V L-N) Enter transformer impedance (Zt) Transformer Calculations Secondary 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 Terminel Maximum Secondary Protection per NEC 450.3(B) Recommended Secondary Breaker Rating Length (L) Type of Conductor (3-Single Conductor cable) or (3 conductor cable) Type of RaceWay No of Conductor per Phase (N) Size of Phase Conductor Size of Neutral Conductor Phase Conductor Constant ("C") Neutral Conductor Constant ("C")
f (L-L) M (L-L) f (L-N) M (L-N) Do You Have any Motor Contributions Motor 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 System Fault Circuit Current Current at Main Service Panel(L-L) Fault Circuit Current 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 RaceWay No of Conductor per Phase (N) Size of Phase Conductor Size of Neutral Conductor Phase Conductor Constant ("C") Neutral Conductor Constant ("C") f (L-L) M (L-L) f (L-N) M (L-N) Do You Have any Motor Contributions Motor 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 System Fault Circuit Current Current at Main Service Panel(L-L) Fault Circuit Current 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 RaceWay No of Conductor per Phase (N) Size of Phase Conductor Size of Neutral Conductor Phase Conductor Constant ("C") Neutral Conductor Constant ("C") f (L-L)
M (L-L) f (L-N) M (L-N) Do You Have any Motor Contributions Motor 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)
Design By :
Jignesh.Parmar. www.jiguparmar.com
[email protected]
Yes 300 Three Phase 480 240 5.75 0.8 3 1125 1353 2706 23534 1556185 No 0 0 23534 1556185
Kw 1.732 Volts Volts %
Kva Am p Am p Am p Am p Am p Am p Amp Amp
ANEL) Unlimited
Kva
Three Phase 3000 440 230 5.75
3 Kva Volts Volts %
440 3937 5905 0.0000 0.0575 68463 102694
Volts Am p Am p
68463
Amp
4921 5000 100 Copper Three Conductor Cable No Non-metalic Raceway 1 600 kcmil 10 32154 982
Amp Amp Meter 1 3 5
1.732 Kva Base
I (L-N)=1.5* I (L-L) Zu=Kva Base/Kva Source
Amp Amp
AW G AW G
ISCa=Tra.FLC(L-L)/(Zu+Zt) ISCa=Tra.FLC(L-N)/(Zu+Zt)
0.8381 0.5440 78.7504 0.0125 No 0 0 37246 1288
1.732
1.7328*L*IscL-L/C*N*V LL-L 1/1+f 1.7328*L*IscL-N/C*N*V L-N 1/1+f
1.732
Am p Am p Amp Amp
Three Phase Feeder System Three Phase 60780 1557473 440 230
1.732 Am p Am p Am p Am p
100 Copper Three Conductor Cable No Non-metalic Raceway 1 14 12 389 617 61.5041 0.0160 1900.8828 0.0005 No 0 0 972 819
Meter 1 3 5
Enter Fault Current Dir Enter Fault Current Dir
AW G AW G
1.732
1.7328*L*IscL-L/C*N*V L-L 1/1+f 1.7328*L*IscL-N/C*N*V L-N 1/1+f
1.732
Am p Am p Amp Amp
Single Phase Feeder System Single Phase 0 819 0 230
1
100 Aluminium 3 Single Conductor Cable No Non-metalic Raceway 1 14 600 kcmil 237 23451 0.0000
Meter 2 1 3
Enter Fault Current Dir Enter Fault Current Dir
AW G AW G
2
1.7328*L*IscL-L/C*N*V L-L
1.0000 0.0304 0.9705 No 0 0 0
Am p Am p Amp
795
Amp
2
1/1+f 1.7328*L*IscL-N/C*N*V L-N 1/1+f
ctly if You Know (L-L) ctly if You Know (L-N)
ctly if You Know (L-L) ctly if You Know (L-N)
Gen 250 300 375 400 500 600 750 900 1000 1200 1300 1800 2000 2400 2500 3000
p.f 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1
Volts 208 480
parallal 1 2 3 4 5 6
Meter
Utility / Pri 35,000 50,000 65,000 75,000 100,000 150,000 250,000 500,000 Unlimited Non-metali Metalic Ra Aluminium i Alumnium i 3 Single Co Three Con Aluminium Copper
ary KVA 3 Phase 20 3 Phase 48 hree Phas ingle Phas Yes No
c Raceway ew eway in in Non-met n Meta Metali lic cR nduc nducto torr Ca ucto uctorr Cabl Cabl
14 12 10 8 6 4 3 2 1 O OO OO O OOOO 250 250 kcmil kcmil 300 kcmil 350 350 kcmil kcmil 400 400 kcmi kcmill 500 kcmil 600 kcmil 750 kcmil 1000 kcmil
AWG OO OO 1 2 4 6 8 10 12 14 16
mm2 70 55 50 35 25 16 10 6 4 2.5 1.5
Factor of Max.Utilization Motor Ltg
Ku 0.75 1
Demand Factor Ltg Heating/AC Power Socket Lift/Hoist Motor
Ks 1 1 2 0.6 to 1 0.6
Maximum Fuse Size(Amp) 400 325 250 200 125 80 50 30 20 15 7.5
AWG 26 25 24 23 22 21 20 19 18 17 16 14 12 10 8 6 4 2 1 O OO O OO O OO O
Maximum Ci Circuit Le Len Operating Cuurent Im of the Instantaneous Tripping element(A) 50 63 80 100 125 160 200 250 320 400 500 560 630 700 800 875 1000 1120 1250 1600 2000 2500
1.5
2.5
4
6
100 79 63 50 40 31 25 20 16 13 10 9 8 7 6 6 5 4 4
167 133 104 83 67 52 42 33 26 21 17 15 13 12 10 10 8 7 7 5 4
267 212 167 133 107 83 67 53 42 33 27 24 21 19 17 15 13 12 11 8 7 5
400 317 250 200 160 125 100 80 63 50 40 36 32 29 25 23 20 18 16 13 10 8
3200 4000 5000 6300 8000 10000 12500
Rated Current of C.B (A) 6 10 16 20 25 32 40 50 63 80 100 125
Rated Current of C.B (A) 6 10 16 20 25 32 40 50 63 80 100 125
Rated Current of C.B (A) 1 2 3 4 6 10 16 20 25 32 40 50 63 80
4
6 5 4
1.5 200 120 75 60 48 37 30 24 19 15 12 10
Maximum Length of Copper Conductor circuit in Meter protcted 2.5 4 6 333 533 800 200 320 480 125 200 300 100 160 240 80 128 192 62 100 150 50 80 120 40 64 96 32 51 76 25 40 60 20 32 48 16 26 38
1.5 100 60 37 30 24 18 15 12 9.5 7.5 6 5
Maximum Max imum Length Length of Copper Conductor Conductor circuit in Meter Meter protcte 2.5 4 6 167 267 400 100 160 240 62 100 150 50 80 120 40 64 96 31 50 75 25 40 60 20 32 48 16 26 38 12.5 20 30 10 16 24 8 13 19
1.5 429 214 143 107 71 43 27 21 17 13 11 9 7 5
Maximum Length of Copper Conductor circuit in Meter protcted 2.5 4 6 714 357 571 857 238 381 571 179 286 429 119 190 286 71 114 171 45 71 107 36 57 86 29 46 69 22 36 54 18 29 43 14 23 34 11 18 27 9 14 21
100 125
4 3
7 6
Short circuit Current at T.C Secondary 3 Ph T.C Rating (KVA) Rated FLC(Amp) ISC at Secondary 50 70 1391 100 139 2782 160 223 4452 200 278 5565 250 348 6956 315 448 8765 400 556 11130 500 696 13912 600 836 16714 700 975 19500 800 1115 22286 900 1254 25072 1000 1393 27860 1250 1741 34820 1500 1089 41780 2000 1786 55720 2500 3482 69640 3000 4179 83580
11 9
17 14
MCCB/ELCB 0.5 1 2 4 6 10 16 20 25 32 40 45 50 63 80 100 125 225 600 800 1600 2000 3000 3200 4000 5000 6000
mm2 0.13 0.16 0.2 0.26 0.33 0.41 0.52 0.65 0.82 1.04 1.5 2.5 4 6 10 16 25 35 50 55 70 95 120
Size 6 6 6 6 10 16 20 25 32 40 45 50 63 80 100 125 225 600 800 1600 2000 3000 3200 4000 5000 6000 6000
Max Amp 2.2 2.7 3.5 4.7 7 9 11 14 16 19 22 32 41 55 64 73 135 181 211 245 283 328 380
2.7 3.5 2.7 3.5 4.7 7 9 11 14 16 19 22 32 41 55 64 73 135 181 211 245 283 328 380
mm 2 0.13 0.16 0.2 0.26 0.33 0.41 0.52 0.65 0.82 1.04 1.5 2.5 4 6 10 16 25 35 50 55 70 95 120 120
AWG 26 25 24 23 22 21 20 19 18 17 16 14 12 10 8 6 4 2 1 O OO O OO OOOO
3cx1.5 3cx2.5 3cx4 3cx6 3cx10 3cx16 3cx25 3cx35 3cx50 3cx70 3cx95 3cx120 3cx150 3cx185 3cx225
gth in mtr for Cu conductor ( for Alu multiply 0.62) 10
16
25
35
50
70
95
120
150
417 333 267 208 167 133 104 83 67 60 63 48 42 38 33 30 27 21 17 13
427 333 267 213 167 133 107 95 85 76 67 61 53 48 43 33 27 21
417 333 260 208 167 149 132 119 104 95 83 74 67 52 42 33
467 365 292 233 208 185 167 146 133 117 104 94 73 58 47
495 396 317 283 251 226 198 181 158 141 127 99 79 63
417 370 333 292 267 233 208 187 146 117 93
452 396 362 317 283 253 198 158 127
457 400 357 320 250 200 160
435 388 348 272 217 174
11 8 7 5 4
by B Type C.B 10 0 800 500 400 320 250 200 160 127 100 80 64
17 13 11 8 7 5 4
26 21 17 13 10 8 7
36 29 23 19 16 12 9
49 40 32 25 20 16 13
16 0 0 800 640 512 400 320 256 203 160 128 102
25 0 0 0 0 800 625 500 400 317 250 200 160
35
50
875 700 560 444 350 280 224
760 603 475 380 304
by CType C.B 10 667 400 250 200 160 125 100 80 64 50 40 32
16
25
35
50
640 400 320 256 200 160 128 102 80 64 51
625 500 400 313 250 200 159 125 100 80
875 700 560 438 350 280 222 175 140 112
760 594 475 380 302 238 190 152
by D Type C.B 10
16
25
35
50
762 457 286 229 183 143 114 91 73 57
714 446 357 286 223 179 143 113 89
625 500 400 313 250 200 159 125
848 679 543 424 339 271 215 170
952 714 476 286 179 143 114 89 71 57 45 36
73 58 47 37 29 23 19
99 79 63 50 40 32 25
125 100 80 63 50 40 32
136 109 87 69 54 43 35
29 23
46 37
71 57
100 80
136 109
185
240
459 411 321 257 206
400 320 256
161 128 103 82 64 51 41
200 160 128 102 80 64 51
"C" For Copper conductor.
"C" F
14 12 10 8 6 4 3 2 1 O OO O OO OO O O 250 kcmil 300 kcmil 350 kcmil 400 kcmil 500 kcmil 600 kcmil 750 kcmil
3 Sin Singl gle e Con Condu duct ctor or 600V Nonmagn Steel etic 389 389 617 617 981 982 1557 1559 2425 2430 3806 3826 4774 4811 5907 6044 7293 7493 8925 9317 10755 11424 12844 13923 15082 16673 16483 18594 18177 20868 19704 22737 20566 24297 22185 26706 22965 28033 24137 29735
3 Con Cond duc ucto torr Cab Cable le 600V Nonmagn Steel etic 389 389 617 617 982 982 1559 1560 2431 2433 3830 3838 4820 4833 5989 6087 7454 7579 9210 9473 11245 11703 13656 14410 16392 17483 18311 19779 20617 22525 22646 24904 24253 26916 26980 30096 28752 32154 31051 34605
1000 kcmil
25278
33864
AWG/Kcm ill
31491
AWG/Kcm ill
37197
3 Single 60 Steel
14 12 10 8 6 4 3 2 1 O OO O OO OO OO 250 kcmil 300 kcmil 350 kcmil 400 kcmil 500 kcmil 600 kcmil 750 kcmil
237 376 599 951 1481 2346 2952 3713 4645 5777 7187 8826 10741 12122 13910 15484 16671 18756 20093 21766
1000 kcmil
23478
Maximum Length of Copper Conductor circuit in Meter protcted by B Type C.B Rated Current of C.B (A) 6 10 16 20 25 32 40 50 63 80 100 125
1.5
2.5
4
6
10
16
25
200 120 75 60 48 37 30 24 19 15 12 10
333 200 125 100 80 62 50 40 32 25 20 16
533 320 200 160 128 100 80 64 51 40 32 26
800 480 300 240 192 150 120 96 76 60 48 38
0 800 500 400 320 250 200 160 127 100 80 64
0 0 800 640 512 400 320 256 203 160 128 102
0 0 0 0 800 625 500 400 317 250 200 160
Maximum Length of Copper Conductor circuit in Meter protcted by CType C.B Rated Current of C.B (A) 6 10 16
1.5
2.5
4
6
10
16
25
100 60 37
167 100 62
267 160 100
400 240 150
667 400 250
640 400
625
20 25 32 40 50 63 80 100 125
30 24 18 15 12 9.5 7.5 6 5
50 40 31 25 20 16 12.5 10 8
80 64 50 40 32 26 20 16 13
120 96 75 60 48 38 30 24 19
200 160 125 100 80 64 50 40 32
320 256 200 160 128 102 80 64 51
500 400 313 250 200 159 125 100 80
Maximum Length of Copper Conductor circuit in Meter protcted by D Type C.B Rated Current of C.B (A) 1 2 3 4 6 10 16 20 25 32 40 50 63 80 100 125
1.5
2.5
4
6
10
16
25
429 214 143 107 71 43 27 21 17 13 11 9 7 5 4 3
714 357 238 179 119 71 45 36 29 22 18 14 11 9 7 6
571 381 286 190 114 71 57 46 36 29 23 18 14 11 9
857 571 429 286 171 107 86 69 54 43 34 27 21 17 14
952 714 476 286 179 143 114 89 71 57 45 36 29 23
762 457 286 229 183 143 114 91 73 57 46 37
714 446 357 286 223 179 143 113 89 71 57
r Allu conductor. onductor 0V Nonmagn etic 237 376 599 952 1482 2350 2961 3730 4678 5838 7301 9110 11174 12862 14923 16813 18506 21391 23451 25976
3 Conductor Cable 600V Nonmagn Steel etic 237 237 376 376 599 599 952 952 1482 1482 2351 2353 2963 2966 3734 3740 4686 4699 5852 5876 7327 7373 9077 9243 11185 11409 12797 13236 14917 15495 16795 17635 18462 19588 21395 23018 23633 25708 26432 29036
28779
29865
35
50
875 700 560 444 350 280 224
760 603 475 380 304
35
50
875
32938
MCCB/EL CB 0.5 1
1 2
2
4
4 6 10 16 20 32 45 50 63 80 100 225 600 800 1600 2000 3000 3200 4000 5000
6 10 16 20 32 45 50 63 80 100 225 600 800 1600 2000 3000 3200 4000 5000 6000
6000
6000
700 560 438 350 280 222 175 140 112
760 594 475 380 302 238 190 152
35
50
625 500 400 313 250 200 159 125 100 80
848 679 543 424 339 271 215 170 136 109
