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: 208 Volts Three-Phase

Three-Phase 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

903

824

757

700

651

609

539

483

438

400

369

342

318

272

237

211

189

172

157

135

118

105

85

72

3

2,271

1,827

1,528

1,313

1,151

1,025

841

712

618

546

489

443

404

332

282

245

217

194

176

148

128

112

91

76

5

3,257

2,415

1,919

1,592

1,360

1,187

947

787

674

589

523

470

427

348

293

253

223

199

180

151

130

114

92

77

10

4,830

3,184

2,375

1,894

1,574

1,347

1,046

854

722

626

552

493

446

360

302

260

228

203

183

153

132

115

93

77

15

5,757

3,562

2,579

2,021

1,662

1,411

1,084

880

740

639

562

502

453

365

305

262

230

205

185

154

132

116

93

77

20

6,368

3,787

2,695

2,092

1,709

1,445

1,103

893

749

646

567

506

456

367

307

263

231

205

185

155

133

116

93

78

25

6,801

3,936

2,769

2,136

1,739

1,466

1,116

901

755

650

571

509

459

368

308

264

231

206

185

155

133

116

93

78

30

7,124

4,042

2,821

2,167

1,759

1,480

1,124

906

759

653

573

510

460

369

308

265

232

206

186

155

133

116

93

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