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NEC Chart Motor Full Load Currents

Average Amperages for Given Horsepower Motor Ratings

The table below provides the average full-load currents of squirrel cage motors based on NEC (National
Electrical Code) Tables 430-148, 149, and 150. These values are given only as a guide - they may vary
depending on the type of motor and manufacturer. Refer to the actual motor nameplate for full-load
current values.

HP

115V

230V

460V


Single Phase

Single Phase

Three Phase

Three Phase

1/10

3.0

1.5

-

-

1/8

3.8

1.9

-

-

1/6

4.4

2.2

-

-

1/4

5.8

2.9

-

-

1/3

7.2

3.6

-

-

1/2

9.8

4.9

2.2

1.1

3/4

13.8

6.9

3.2

1.6

1

16.0

8.0

4.2

2.1

1 1/2

20.0

10.0

6.0

3.0

2

24.0

12.0

6.8

3.4

3

34.0

17.0

9.6

4.8

5

56.0

28.0

15.2

7.6

7 1/2

80.0

40.0

22.0

11.0

10

100.0

50.0

28.0

14.0

15

135.0

68.0

42.0

21.0

20

-

88.0

54.0

27.0

25

-

110.0

68.0

34.0

30

-

136.0

80.0

40.0

40

-

176.0

104.0

52.0

50

-

216.0

130.0

65.0

60

-

-

154.0

77.0

75

-

-

192.0

96.0

100

-

-

248.0

124.0

125

-

-

312.0

156.0

150

-

-

360.0

180.0

200

-

-

480.0

240.0

250

-

-

602.0

302.0

300

-

-

-

361.0

350

-

-

-

414.0

400

-

-

-

477.0

500

-

-

-

590.0