Handbook of Electrical Tables and Design Criteria

Fault-Current Calculations with Short-Circuit Tables and Data-Continued

Single-Phase L-N Fault-Current Tables-Continued

Short-Circuit Tables and Data: 480 Volts Single-Phase L-L

Single-Phase L-L Bolted Fault-Current [*] Table
One-Way Distance in Feet
Available Isc in Thousands (Isca)

5

10

15

20

25

30

40

50

60

70

80

90

100

125

150

175

200

225

250

300

350

400

500

600

1

949

903

862

824

789

757

700

651

609

571

539

509

483

428

384

348

318

293

272

237

211

189

157

135

3

2,585

2,270

2,024

1,826

1,664

1,527

1,313

1,151

1,025

923

840

771

712

598

515

453

404

365

332

282

245

217

176

148

5

3,944

3,256

2,773

2,414

2,138

1,918

1,591

1,360

1,187

1,053

946

859

787

650

554

482

427

383

347

293

253

223

180

151

10

6,512

4,828

3,836

3,182

2,719

2,373

1,892

1,573

1,346

1,177

1,045

940

854

695

586

506

446

398

360

302

260

228

183

153

15

8,318

5,754

4,399

3,560

2,990

2,577

2,020

1,661

1,410

1,225

1,083

970

879

711

598

515

453

404

364

305

262

230

184

154

20

9,657

6,365

4,747

3,785

3,147

2,693

2,090

1,708

1,444

1,250

1,103

986

892

720

604

520

456

406

367

306

263

231

185

154

25

10,689

6,798

4,983

3,934

3,249

2,768

2,135

1,737

1,465

1,266

1,115

996

900

725

607

522

458

408

368

307

264

231

185

155

30

11,509

7,120

5,155

4,039

3,321

2,820

2,166

1,758

1,479

1,277

1,123

1,003

905

729

610

524

460

409

369

308

264

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