Amps

Motor Amp

DELTA ARMATURE WORKS

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Full - Load Currents

Three Phase AC Induction 60 Hz

Hp 115V 200V 230V 460V 575V

` 1/2 4 2.3 2 1 .8

3/4 5.6 3.2 2.8 1.4 1.2

1 8.3 4.15 3.6 1.8 1.4

11/2 10.4 6 5.5 2.6 2.1

2 13.6 7.8 6.8 3.4 2.7

3 - 11 9.6 4.8 3.9

5 17.5 15.2 7.6 6.1

71/2 25 22 11 9

10 32 28 14 11

15 48 42 21 17

20 60 52 27 22

25 78 68 34 27

30 92 80 40 32

40 120 104 52 41

50 150 130 65 52

60 177 154 77 62

75 221 192 96 77

100 285 248 124 99

125 358 312 156 125

150 415 360 180 144

200 550 480 240 192

Over

200 hp

Approx

0.1Amp/Hp 2.75 2.4 1.2 0.96

Full- Load Currents

Single - PhaseMotor

HP 115V 200V 230V

1/6 4.4 2.5 2.2

1/4 5.8 3.3 2.9

1/3 7.5 4.1 3.6

1/2 9.8 5.6 4.9

3/4 13.8 7.9 6.9

1 16 9.2 8

11/2 20 11.5 10

2 24 13.8 12

3 34 19.6 17

5 56 32.2 28

71/2 80 46.0 40

10 100 57.5 50

Nema Size Starters

Maximum Horsepower

Polyphase Motors

Full Voltage Starting

NEMA 200V 230V 460V

Size 575V

00 11/2 11/2 2

0 3 3 5

1 71/2 71/2 10

2 10 15 25

3 25 30 50

4 40 50 100

5 75 100 200

6 150 200 400

7 300 600

12 1

9 4

6 7

3 10

11 8 5 2

1

4

7

10

12 11

9 8

6 5

3 2

Dual Voltage

Y-Connected Start

Delta- Connected Run

Voltage L1 L2 L3 Join

Low Start 1&7 2&8 3&9 4&5&6, 10&11&12

Voltage Run 1,6,7,12 2.4.8.10. 3,5,9,11

High Star 1 2 3 4&7, 5&8, 6&9,

10&11&11

Voltage Run 1,12, 2,10 3,11 4&7, 5&8, 6&9

STANDARD 9. LEAD MOTOR STAR & DELTA CONNECTION

STAR

VOLTAGE L1 L2 L3 JOIN

220 1&7 2&8 3&9 456

440 1 2 3 4&7 5&8 6&9

DELTA

VOLTAGE L1 L2 L3 JOIN

220 1,7&6 2,8&4 3,9&5

440 1 2 3 4&7 5&8 6&9

STANDARD 1PHASE CONNECTION 6 LEAD MOTOR

VOLTAGE L1 L2 JOIN

110 1,2,5 3,4,8

220 1 4,8, 2,5,3,

TO REVRISE ENDERCHANGE 5 & 8

Maximun Locked-Rotor Currents.

Three Phase Induction Motors 60Hz

Hp 200V 230V 460V 575V

1/2 23 20 10 8

3/4 29 25 12.5 10

1 34.5 30 15 12

11/2 46 40 20 16

2 57.5 50 25 20

3 73.5 64 32 25

5 106 92 46 37

7/1/2 146 127 63 51

10 186 162 81 65

15 267 232 116 93

20 334 290 145 116

25 420 365 182 146

30 500 435 217 174

40 667 580 290 232

50 834 725 362 290

60 1000 870 435 348

75 1250 1085 592 435

100 1670 1450 725 580

125 2085 1815 907 726

150 2500 2170 1085 870

200 3340 2900 1450 1160

250 4200 3650 1825 1460

MINIMUN SAFE WIRE SIZES {AT 86 Deg. Fah.}

Single Phase Three Phase

110 V 220 V 220V 440 V

HP X Y X Y X Y X Y

1/6 14 14 14 14 14 14 14 14

1/4 14 14 14 14 14 14 14 14

1/2 14 14 14 14 14 14 14 14

3/4 14 14 14 14 14 14 14 14

1 12 12 14 14 14 14 14 14

11/2 10 10 14 14 14 14 14 14

2 10 10 14 14 14 14 14 14

3 6 8 10 10 14 14 14 14

5 8 8 12 12 14 14

71/2 6 6 10 10 14 14

10 8 8 12 12

15 6 6 10 10

20 4 6 8 8

25 3 4 8 8

30 1 3 6 8

40 00 1 4 6

50 000 00 3 4

60 0000 000 2 3

75 300M 4/0 0 1

100 500M 350M 3/0 2/0

125 4/0 3/0

150 300M 4/0

200 500M 350M

X= R, RW, T, TW Types of Wire. y= RH Type of Wire.

5 6

3 1

2.

4