Full-Load Currents of Motors

Note: the following table contains approximate full-load currents for motors of various types, speeds, and frequencies. Variations of 10% may be expected.

Hp. of
Motor

Current - Full-Load (Amperes)

Direct-current Motors
Single-phase Motors
115
volt
230
volt
550
volt
110
volt
220
volt
1/4
4.8
2.4
1/2
4.5
2.3
7
3.5
3/4
6.5
3.3
1.4
9.4
4.7
1
8.4
4.2
1.7
11
5.5
1
12.5
6.3
2.6
15.2
7.6
2
16.1
8.3
3.4
20
10
3
23
12.3
5.0
28
14
5
40
19.8
8.2
46
23
7
58
28.7
12
68
34
10
75
38
16
86
43
15
112
56
23
20
140
74
30
25
185
92
38
30
220
110
45
40
294
146
61
50
364
18
75
60
436
215
90
75
540
268
111
100
357
146
125
443
184
150
220
175
200
295

Full-Load Currents of Motors (Continued)

HP of
Motor
Current - Full-Load (Amperes)

Alternating-Current Motors

Squirrel-Cage Induction Motors

Slip-Ring Induction Motors

Two-phase

Three-phase

Two-phase

Three-phase

110
volt
220
volt
440
volt
550
volt
2300
volt
110
volt
220
volt
440
volt
550
volt
2300
volt
110
volt
220
volt
440
volt
550
volt
2300
volt
110
volt
220
volt
440
volt
550
volt
2300
volt
1/4                                        
1/2 4.3 2.2 1.1 .9   5.0 2.5 1.3 1.0                      
3/4 4.7 2.4 1.2 1.0   5.4 2.8 1.4 1.1   6.2 3.1 1.6 1.3   7.2 3.6 1.8 1.5  
1 5.7 2.9 1.4 1.2   6.6 3.3 1.7 1.3   6.7 3.4 1.7 1.4   7.8 3.9 2.0 1.6  
1 7.7 4.0 2 1.6   9.4 4.7 2.4 2.0   11.7 5.9 3.0 2.3   14.4        
2 10.4 5 3 2.0   12.0 6 3.0 2.4   12.5 6.3 3.1 2.5   20.02 7.2 3.6 2.9  
3   8 4 3.0     9 4.5 4.0     8.7 4.3 3.5     10 5.0 4  
5   13 7 6     15 7.5 6.0     13.0 6.5 5.2     15 7.5 6  
7   19 9 7     22 11 9.0     20.0 10.0 7.6     25 13 10  
10   24 12 10     27 14 11     24.3 12.1 10.0     28 14 11  
15   33 16 13     38 19 15     39 19.5 15.6     45 23 18  
20   45 23 19     52 26 21 5.7   49 24.7 19.8     56 28 22  
25   55 28 22     64 32 26 7   60 30.0 24.0 6.4   67 34 27 7.5
30   67 34 27 7   77 39 31 8   72 36.0 28.8 7.8   82 41 33 9
40   88 44 35 9   101 51 40 10   93 46.5 37.3 9.5   106 53 42 11
50   108 54 43 11   125 63 50 13   113 57 45 12.1   128 64 51 14
60   129 65 52 13   149 75 60 15   135 68 54 14.0   150 75 60 16
75   156 78 62 16   180 90 72 19   164 82 65 17.3   188 94 75 19
100   212 106 85 22   246 123 98 25   214 108 87 21.7   246 123 99 25
125   268 134 108 27   310 155 124 32   267 134 108 27   310 155 124 31
150   311 155 124 31   360 180 144 36   315 158 127 32   364 182 145 37
175                                        
200   415 208 166 43   480 240 195 49   430 216 173 44   490 245 196 52
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