BERKELEY

®

Cable Selection

Stainless steel, 4" submersible motors

TWO DIFFERENT CABLE SIZES CAN BE USED

The example below is for reference. Depending on the installation, any number of combinations may be used, as long as the total percentage length of the two cables used does not exceed 100%. This is to ensure that adequate voltage will be supplied to the motor.

EXAMPLE:

1 HP,

230 Volt, 3W,

1 PH Motor

In a replacement installation, the well already has 210 feet of buried #12 cable between the service entrance and the well head. The question is: What size cable is required in the well with a 1 HP, 230 Volt, 1 PH, 3W motor setting at 310 feet?

1. According to the table, #12 cable is large enough for the 1 HP motor so the percent of the maximum allowable cable used by the 210-foot run is 210 ÷ 359 = 58.5%, since 359 feet is the total allowable.

2. With 58.5% of the total allowable cable already used between the service entrance and the well head, only

41.5% is left for the well. Therefore, the 310 feet needed in the well can only utilize 41.5% of the total feet allowed in the table.

3. From the table, 41.5% of the 573 feet for #10 cable equals only 238 feet, so a larger size is needed. For #8,

41.5% of 908 feet = 377 feet. As a result, #8 can be used for the 310 feet in the well.

CAUTION Use of wire size smaller than listed will void warranty.

MOTOR LEAD LENGTHS: PENTEK ® 2-WIRE PSC MOTORS

60 HZ MOTOR RATING

VOLTS HP

115 1/2

1/2

230

3/4

1

14

107

457

342

267

12

171

726

545

425

10

273

1158

869

678

8

60C AND 75C INSULATION – AWG COPPER WIRE SIZE

6 4 3 2 1 1/0

432

1835

672

2855

1071

4551

1346

5721

1700

7225

2142

9102

2703

11489

1376

1074

2141

1671

3413

2664

2080

4291

3349

2615

5419

4229

3303

6826

5328

4161

8617

6725

5252

2/0

3411

10871

8485

6626

3/0

4305

10711

8365 1-1/2 209 332 530 839 1305

MOTOR LEAD LENGTHS: PENTEK 3-WIRE MOTORS

CSIR CONTROL BOXES

60 HZ MOTOR RATING

VOLTS HP

115 1/2

1/2

230 3/4

1

CSCR CONTROL BOXES

14

94

348

277

231

12

150

553

441

367

10

240

883

704

585

8

60C AND 75C INSULATION – AWG COPPER WIRE SIZE

6 4 3 2 1 1/0

380

1398

591

2175

942

3467

1184

4359

1495

5505

1883

6935

2377

8753

1115

927

1734

1442

2765

2299

3476

2891

4390

3651

5530

4599

6981

5805

2/0

2999

8807

7324

3/0

3786

60 HZ MOTOR RATING

VOLTS HP

1/2

3/4

230

1

1-1/2

2

3

5

14

438

359

296

199

180

133

12

697

571

471

317

286

211

10

1112

912

751

505

456

337

206

8

60C AND 75C INSULATION – AWG COPPER WIRE SIZE

6 4 3 2 1 1/0

1761

1444

2740

2246

4369

3581

5492

4502

6936

5685

8738

7162

11029

9040

2/0

11406

1190

801

1852

1246

2952

1986

3711

2496

4686

3153

5904

3972

7452

5013

9402

6325

722

534

326

1123

830

507

1790

1324

809

2251

1664

1017

2843

2102

1284

3581

2648

1618

4520

3342

2042

5703

4217

2577

3/0

5323

3253

4/0

5424

4/0

4770

4/0

All lengths in feet.

NOTE: Based on service factor amps, 30C ambient and 5% voltage drop.

(1) This table is based on copper wire. If aluminum wire is used it must be two sizes larger.

Example: When the table calls for #12 copper wire you would use #10 aluminum wire.

(2) Cables #14 to 4/0 are AWG sizes.

CB6342WS

BERKELEY

®

Cable Selection

Stainless steel, 4" submersible motors

7.5

0.5

0.75

1

1.5

1.5

2

3

5

2

3

5

7.5

0.5

0.75

1

7.5

10

1.5

2

3

5

7.5

1.5

2

3

5

MOTOR LEAD LENGTHS: PENTEK ® 3-PHASE MOTORS

60 HZ MOTOR RATING 60C AND 75C INSULATION – AWG COPPER WIRE SIZE

VOLTS HP 14 12 10 8 6 4 3 2 1 1/0

0.5

3/4

1

629

468

386

1000

745

614

1595

1188

979

2526

1881

1551

3931

2927

2414 3848 4837

200

230

460

575

5367

4025

3220

2368

1964

1519

947

596

468

3870

3049

2454

1324

1006

3374

2531

2024

1489

1234

955

595

375

294

2433

1917

1543

832

633

73

844

633

516

383

316

251

290

237

183

109

461

376

292

173

117

1342

1006

821

610

503

399

186

2140

1605

1310

973

735

600

465

276

3777

3132

2423

1511

951

747

6173

4864

3915

2112

1605

803

636

367

1271

1007

581

385

8561

6420 10168

5136 8135

5981

4960

3837

2393

1506

1182

7703

6200

3345

2542

1163

951

737

438

295

3389

2542

2075

1541

7718

5971

3723

2344

1840

1810

1479

1147

681

459

5274

3956

3229

2397

1978

1567

904

599

5205

3956

2886

2358

1828

1086

3628

2965

2298

1365

3744

2902

1724

1161 731 919

8408 10570

6306

5148

3822

7927

6471

4804

10011

8172

6067

3153

2497

1441

955

3964

3140

1812

1201

5006

3965

2288

1517

5935

3737

2933

4698

3687

5933

4656

4717

3656

2172

1462

7643

6306

4995

2883

1911

7474

5866

5954

4614

2741

1846

2/0

3458

2329

3/0

4366

2940

4/0

5500

3704

9648

7960 10042

6305 7954 10042 12651

3639

2412

4591

3043

5795

3842

7301

4840

All lengths in feet.

NOTE: Based on service factor amps, 30C ambient and 5% voltage drop.

(1) This table is based on copper wire. If aluminum wire is used it must be two sizes larger. Example: When the table calls for

#12 copper wire you would use #10 aluminum wire.

(2) The portion of the total cable that is between the service entrance and a 3-phase motor starter should not exceed 25% of the total maximum length to assure reliable starter operation.

(3) Cables #14 to 4/0 are AWG sizes.

©2017 Pentair plc. All Rights Reserved.

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Because we are continuously improving our products and services, Pentair reserves the right to change specifications without prior notice.

CB6342WS (12/18/17)