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|
Transformer KVA Ratings
| Single Phase Full Load Current |
| KVA Rating |
120V |
208V |
240V |
277V |
480V |
600V |
| Amperes |
| .050 |
.42 |
.24 |
.21 |
.18 |
.10 |
.08 |
| .075 |
.63 |
.36 |
.31 |
.27 |
.16 |
.13 |
| .100 |
.83 |
.48 |
.42 |
.36 |
.21 |
.17 |
| .150 |
1.3 |
.72 |
.63 |
.54 |
.31 |
.25 |
| .250 |
2.1 |
1.2 |
1.0 |
.90 |
.52 |
.42 |
| .500 |
4.2 |
2.4 |
2.1 |
1.8 |
1.4 |
.83 |
| .750 |
6.3 |
3.6 |
3.1 |
2.7 |
1.6 |
1.3 |
| 1 |
8.3 |
4.8 |
4.2 |
3.6 |
2.1 |
1.7 |
| 1.5 |
12.5 |
7.2 |
6.3 |
5.4 |
3.1 |
2.5 |
| 2 |
16.7 |
9.6 |
8.3 |
7.2 |
4.2 |
3.3 |
| 3 |
25.0 |
14.4 |
12.5 |
10.8 |
6.3 |
5.0 |
| 5 |
41.7 |
24.0 |
20.8 |
18.1 |
10.4 |
8.3 |
| 7.5 |
62.5 |
36.1 |
31.3 |
27.1 |
15.6 |
12.5 |
| 10 |
83.3 |
48.1 |
41.7 |
36.1 |
20.8 |
16.7 |
| 15 |
125.0 |
72.1 |
62.5 |
54.2 |
31.3 |
25.0 |
| 25 |
208.3 |
120.2 |
104.2 |
90.3 |
52.1 |
41.7 |
| 37.5 |
312.5 |
180.3 |
156.3 |
135.4 |
78.1 |
62.5 |
| 50 |
416.7 |
240.4 |
208.3 |
180.5 |
104.2 |
83.3 |
| 75 |
625.0 |
361.0 |
313.0 |
271.0 |
156.0 |
125.0 |
| 100 |
833.0 |
481.0 |
417.0 |
361.0 |
208.0 |
167.0 |
| 167 |
1392.0 |
803.0 |
696.0 |
603.0 |
348.0 |
278.0 |
| 200 |
1667.0 |
962.0 |
833.0 |
722.0 |
417.0 |
333.0 |
| 250 |
2083.0 |
1202.0 |
1042.0 |
903.0 |
521.0 |
417.0 |
| Single Phase AC Motor HP Amperage |
| Horse Power |
115V |
208V |
230V |
460V |
575V |
Min Tfmr. KVA |
Std. NEMA KVA Size |
| 1/6 |
4.4 |
2.4 |
2.2 |
1.1 |
.9 |
.53 |
.750 |
| 1/4 |
5.8 |
3.2 |
2.9 |
1.4 |
1.2 |
.70 |
.750 |
| 1/3 |
7.2 |
4.0 |
3.6 |
1.8 |
1.4 |
.87 |
1.0 |
| 1/2 |
9.8 |
5.4 |
4.9 |
2.5 |
2.0 |
1.2 |
1.5 |
| 3/4 |
13.8 |
7.6 |
6.9 |
3.5 |
2.8 |
1.7 |
2 |
| 1 |
16.0 |
8.8 |
8.0 |
4.0 |
3.2 |
1.9 |
2 |
| 1 1/2 |
20.0 |
11.0 |
10.0 |
5.0 |
4.0 |
2.4 |
3 |
| 2 |
24.0 |
13.2 |
12.0 |
6.0 |
4.8 |
2.9 |
3 |
| 3 |
34.0 |
18.7 |
17.0 |
8.5 |
6.8 |
4.1 |
5 |
| 5 |
56.0 |
30.8 |
28.0 |
14.0 |
11.2 |
6.7 |
7.5 |
| 7.5 |
80.0 |
44.0 |
40.0 |
21.0 |
16.0 |
9.6 |
10 |
| 10 |
100.0 |
55.0 |
50.0 |
26.0 |
20.0 |
12.0 |
15 |
| Three Phase Full Load Current |
| KVA Rating |
208V |
240V |
480V |
600V |
| Amperes |
| 3 |
8.3 |
7.2 |
3.6 |
2.9 |
| 6 |
16.7 |
14.4 |
7.2 |
5.8 |
| 9 |
25.0 |
21.7 |
10.8 |
8.7 |
| 15 |
41.6 |
36.1 |
18.0 |
14.4 |
| 30 |
83.3 |
72.2 |
36.1 |
28.9 |
| 45 |
125.0 |
108.3 |
54.1 |
43.3 |
| 75 |
208.2 |
180.4 |
90.2 |
72.2 |
| 112.5 |
312.0 |
271.0 |
135.0 |
108.0 |
| 150 |
416.0 |
361.0 |
180.0 |
144.0 |
| 225 |
625.0 |
541.0 |
271.0 |
217.0 |
| 300 |
833.0 |
722.0 |
361.0 |
289.0 |
| 500 |
1388.0 |
1203.0 |
601.0 |
481.0 |
| Three Phase AC Motor HP Amperage |
| Horse Power |
208V |
230V |
460V |
575V |
Mini Tfmr. KVA |
Std. NEMA KVA Size |
| 1/2 |
2.2 |
2.0 |
1.0 |
0.8 |
0.9 |
3.0 |
| 3/4 |
3.1 |
2.8 |
1.4 |
1.1 |
1.2 |
3.0 |
| 1 |
4.0 |
3.6 |
1.8 |
1.4 |
1.5 |
3.0 |
| 1 1/2 |
5.7 |
5.2 |
2.6 |
2.1 |
2.1 |
3.0 |
| 2 |
7.5 |
6.8 |
3.4 |
2.7 |
2.7 |
3.0 |
| 3 |
10.7 |
9.6 |
4.8 |
3.9 |
3.8 |
6.0 |
| 5 |
16.7 |
15.2 |
7.6 |
6.1 |
6.3 |
9.0 |
| 7 1/2 |
24.0 |
22.0 |
11.0 |
9.0 |
9.2 |
15.0 |
| 10 |
31.0 |
28.0 |
14.0 |
11.0 |
11.2 |
15.0 |
| 15 |
46.0 |
42.0 |
21.0 |
17.0 |
16.6 |
30.0 |
| 20 |
59.0 |
54.0 |
27.0 |
22.0 |
21.6 |
30.0 |
| 25 |
75.0 |
68.0 |
34.0 |
27.0 |
26.6 |
30.0 |
| 30 |
88.0 |
80.0 |
40.0 |
32.0 |
32.4 |
45.0 |
| 40 |
114.0 |
104.0 |
52.0 |
41.0 |
43.2 |
45.0 |
| 50 |
143.0 |
130.0 |
65.0 |
52.0 |
52.0 |
75.0 |
| 60 |
170.0 |
154.0 |
77.0 |
62.0 |
64.0 |
75.0 |
| 75 |
211.0 |
192.0 |
96.0 |
77.0 |
80.0 |
112.5 |
| 100 |
273.0 |
248.0 |
124.0 |
99.0 |
103.0 |
112.5 |
| 125 |
342.0 |
312.0 |
156.0 |
125.0 |
130.0 |
150.0 |
| 150 |
396.0 |
360.0 |
180.0 |
144.0 |
150.0 |
150.0 |
| 200 |
528.0 |
480.0 |
240.0 |
192.0 |
200.0 |
225.0 |
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