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)

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

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