|
Motor horsepower average current chart and
protection sizing
based on 1800 RPM Fan Motors, 60HZ
Square D Co., 1978
Figures read in chart are the Typical
FLA / Circuit Breaker* / Time delay Fuse
| |
Single
phase voltage |
|
Three phase
voltages |
|
|
Size in HP |
115vac |
230vac |
200vac |
230vac |
460vac |
0.16666666 |
4.4 / 15 /
7 |
2.2 / 15 /
3.5 |
- |
- |
- |
0.25 |
5.8 / 15 /
9 |
2.9 / 15 /
4.5 |
- |
- |
- |
0.33333333 |
7.2 / 15 /
12 |
3.6 / 15 /
5.6 |
- |
- |
- |
0.5 |
9.8 / 20 /
15 |
4.9 / 15 /
8 |
2.3 / 15 /
3.5 |
2 / 15 /
3.2 |
1 / 15 /
1.6 |
0.75 |
13.8 / 25 /
20 |
6.9 / 15 /
10 |
|
2.8 / 15 /
5 |
1.4 / 15 /
2.25 |
1 |
16 / 30 /
25 |
8 / 15 / 12 |
4.1 / 15 /
6.25 |
3.6 / 15 /
5.6 |
1.8 / 15 /
2.8 |
1.5 |
20 / 40 /
30 |
10 / 20 /
15 |
6 / 15 / 10 |
5.2 / 15 /
8 |
2.6 / 15 /
4 |
2 |
24 / 50 /
30 |
12 / 25 /
17.5 |
7.8 / 15 /
12 |
6.8 / 15 /
10 |
3.4 / 15 /
5.6 |
3 |
34 / 70 /
50 |
17 / 35 /
25 |
11 / 20 /
17.5 |
9.5 / 20 /
15 |
4.8 / 15 /
8 |
5 |
56 / 90 /
80 |
28 / 60 /
40 |
17.5 / 35 /
25 |
15.2 / 30 /
25 |
7.6 / 15 /
12 |
7.5 |
80 / 110 /
100 |
40 / 80 /
60 |
25.3 / 50 /
40 |
22 / 45 /
30 |
11 / 20 /
17.5 |
10 |
- |
50 / 90 /
60 |
32.2 / 60 /
50 |
28 / 60 /
40 |
14 / 25 /
20 |
15 |
- |
- |
48.3 / 90 /
60 |
42 / 80 /
60 |
21 / 40 /
30 |
20 |
|
|
62.1 / 100
/ 90 |
54 / 90 /
80 |
27 / 60 /
40 |
25 |
|
|
78.2 / 110
/ 100 |
68 / 100 /
100 |
34 / 70 /
50 |
30 |
|
|
92 / 125 /
125 |
80 / 110 /
100 |
40 / 80 /
60 |
40 |
|
|
120 / 175 /
175 |
104 / 150 /
150 |
52 / 90 /
80 |
50 |
|
|
150 / 200 /
200 |
130 / 200 /
200 |
65 / 100 /
100 |
60 |
|
|
177 / 250 /
250 |
154 / 225 /
200 |
77 / 110 /
100 |
75 |
|
|
221 / 300 /
300 |
192 / 250 /
300 |
96 / 125 /
150 |
100 |
|
|
285 / 400 /
400 |
248 / 350 /
350 |
124 / 200 /
175 |
125 |
|
|
359 / 500 /
500 |
312 / 450 /
400 |
156 / 225 /
200 |
150 |
|
|
414 / 600 /
600 |
360 / 500 /
500 |
180 / 250 /
250 |
200 |
|
|
- |
480 / 700 /
600 |
240 / 350 /
350 |
* Some localities require a minimum of 20 amp circuit
breakers
(Note by KR: This chart is for use in estimating purposes
and troubleshooting, manufacturer's specifications may differ slightly
| 
KR-Services-com LLC