June 2005
CAT.02.02.S.K.CD For more information visit: www.EatonElectrical.ca
181
XT IEC Power Control
Reference Data
Single-Phase AC Motors
Table 430-148. Full-Load Currents in Amperes,
Single-Phase Alternating-Current Motors
The following values of full-load
currents are for motors running at
usual speeds and motors with normal
torque characteristics. Motors built for
especially low speeds or high torques
may have higher full-load currents and
multispeed motors will have full-load
current varying with speed, in which
case the nameplate current ratings
shall be used.
The voltages listed are rated motor
voltages. The currents listed shall be
permitted for system voltage ranges of
110 to 120 and 220 to 240V.
Three-Phase AC Motors
The following values of full-load
currents are typical for motors running
at speeds usual for belted motors
and motors with normal torque
characteristics.
Motors built for low speeds (1,200 RPM
or less) or high torques may require
more running current and multispeed
motors will have full-load current
varying with speed. In these cases
the nameplate current rating shall
be used.
The voltages listed are rated motor
voltages. The currents listed shall be
permitted for system voltage ranges of
110 to 120, 220 to 240, 440 to 480 and
550 to 600V.
hp 115V 200V 208V 230V
1/6
1/4
1/3
1/2
3/4
4.4
5.8
7.2
9.8
13.8
2.5
3.3
4.1
5.6
7.9
2.4
3.2
4.0
5.4
7.6
2.2
2.9
3.6
4.9
6.9
1
1-1/2
2
3
16
20
24
34
9.2
11.5
13.8
19.6
8.8
11
13.2
18.7
8
10
12
17
5
7-1/2
10
56
80
100
32.2
46
57.5
30.8
44
55
28
40
50
DC Motors
Table 430-147. Full-Load Current in Amperes,
Direct-Current Motors
The following values of full-load cur-
rents are for motors running at base
speed.
Note: These are average direct-current
quantities.
These are average direct-current quantities.
Table 430-150. Full-Load Current Three-Phase Alternating-Current Motors
For 90 and 80 percent power factor, the above figures shall be multiplied by 1.1 and 1.25
respectively.
hp Armature Voltage
Rating
Ampere
Capacity of
Fuses for Motors
Recommended
Values
120V 240V 120V 240V
1/4
1/3
1/2
3.1
4.1
5.4
1.6
2.0
2.7
5
5
7
3
3
3
3/4
1
1-1/2
2
3
7.6
9.5
13.2
17
25
3.8
4.7
6.6
8.5
12.2
10
15
20
25
30
5
7
10
12
15
5
7-1/2
10
15
20
40
58
76
—
—
20
29
38
55
72
50
80
100
—
—
25
40
50
75
100
25
30
40
50
60
—
—
—
—
—
89
106
140
173
206
—
—
—
—
—
125
150
200
250
275
75
100
125
150
200
—
—
—
—
—
255
341
425
506
675
—
—
—
—
—
350
500
600
—
—
hp Induction Type Squirrel-Cage and
Wound-Rotor Amperes
Synchronous Type Unity
Power Factor
Amperes
115V 200V 208V 230V 460V 575V 2300V 230V 460V 575V 2300V
1/2
3/4
1
4.4
6.4
8.4
2.5
3.7
4.8
2.4
3.5
4.6
2.2
3.2
4.2
1.1
1.6
2.1
.9
1.3
1.7
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1-1/2
2
3
12.0
13.6
—
6.9
7.8
11.0
6.6
7.5
10.6
6.0
6.8
9.6
3.0
3.4
4.8
2.4
2.7
3.9
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
5
7-1/2
10
—
—
—
17.5
25.3
32.2
16.7
24.2
30.8
15.2
22
28
7.6
11
14
6.1
9
11
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
15
20
25
—
—
—
48.3
62.1
78.2
46.2
59.4
74.8
42
54
68
21
27
34
17
22
27
—
—
—
—
—
53
—
—
26
—
—
21
—
—
—
30
40
50
—
—
—
92
120
150
88
114
143
80
104
130
40
52
65
32
41
52
—
—
—
63
83
104
32
41
52
26
33
42
—
—
—
60
75
100
—
—
—
177
221
285
169
211
273
154
192
248
77
96
124
62
77
99
16
20
26
123
155
202
61
78
101
49
62
81
12
15
20
125
150
200
—
—
—
359
414
552
343
396
528
312
360
480
156
180
240
125
144
192
31
37
49
253
302
400
126
151
201
101
121
161
25
30
40
250
300
350
—
—
—
—
—
—
—
—
—
—
—
—
302
361
414
242
289
336
60
72
83
—
—
—
—
—
—
—
—
—
—
—
—
400
450
500
—
—
—
—
—
—
—
—
—
—
—
—
477
515
590
382
412
472
95
103
118
—
—
—
—
—
—
—
—
—
—
—
—
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