Buck Boost Selection Tables
120V x 240 Volts Primary- 16/32 Volts Secondary
Buck-Boost Dry-Type Transformers
Line
Voltage		 95 100 105 208 215 215 220 225 135 240 240 245 250 225
Load
Voltage		 120 113 119 225 244 229 235 240 120 212 225 230 234 239
0.05
KVA		 KVA
AMPS
FUSE
 0.19
1.56
3		 0.35
3.13
5		 0.37
3.13
5		 0.37
1.56
2.5
 0.38
1.56
2.5		 0.72
3.12
5		 0.73
3.13
5		 0.75
3.122
5		 0.42
3.54
5		 0.38
1.77
2.5		 0.75
3.30
5		 0.77
3.33
5		 0.78
3.33
5		 0.08
3.33
5
0.075
KVA		 KVA
AMPS
FUSE
 0.28
2.34
4
 0.53
4.69
8		 0.56
4.69
8		 0.55
2.34
4		 0.57
2.34
4		 1.07
4.69
8		 1.10
4.89
8		 1.12
4.69
8		 0.63
5.31
6		 0.56
2.66
3		 1.12
5.00
6		 1.15
5.00
6		 1.17
5.00
6		 120
500.6
0.1
KVA		 KVA
AMPS
FUSE
 0.38
3.13
6
 0.71
6.25
10		 0.74
6.25
|10		 0.74
3.13
5		 0.75
3.13
5		 1.43
6.25
10		 1.47
6.25
10		 1.50
6.25
10		 0.84
7.08
10		 0.75
3.54
5		 1.50
6.67
10		 1.53
6.67
10		 1.56
6.6
10		 120
6.67
10
0.15
KVA		 KVA
AMPS
FUSE
 0.56
4.69
8
 1.06
9.38
15		 1.12
9.36
15		 1.11
4.69
8		 1.14
4.69
8		 2.15
9.37
15		 2.20
9.37
15		 2.25
9.37
15		 1.27
10.63
15
 1.13
5.31
6		 2.25
10.00
15		 2.30
10.00
15		 2.34
10.00
15		 2.39
10.00
15
0.25
KVA		 KVA
AMPS
FUSE
 0.9-4
7.81
15		 1.77
15.63
25		 1.8615
63
25		 1.84
7.81
12		 1.90
7.81
12		 3.58
15.62
25		 3.67
15.62
25		 3.75
15.62
25		 2.11
17.71
20		 1.88
8.85
10		 3.75
16.67
20		 3.83
16.67
20		 3.91
16.67
20		 3.98
16.67
20
0.5
KVA		 KVA
AMPS
FUSE
 1.88
15.63
25		 3.54
31.25
45		 3.72
31.25
46		 3.68
15.63
25		 3.81
15.63
25		 7.17
31.25
45		 7.33
31.25
45		 7.50
31.25
45		 4.22
35.42
40		 3.75
17.71
20		 7.50
33.33
40		 7.66
33.33
40		 7.81
33.33
40		 7.79
33.33
40
0.75
KVA		 KVA
AMPS
FUSE
 2.82
23.44
40		 5.31
46.88
70		 5.58
46.88
70		 5.53
23.44
35		 5.71
23.44
35		 10.75
46.87
70
 11.00
46.87
70		 11.25
46.87
70		 6.33
53.13
60		 5.63
26.56
30		 11.25
50.00
60		 11.48
50.00
60		 11.48
50.00
60		 11.95
50.00
60
1
KVA		 KVA
AMPS
FUSE
 3.76
31.25
50		 7.08
62.50
90		 7.44
62.50
90		 7.37
31.25
45		 7.61
31.25
45		 14.33
62.50
90		 14.67
62.50
90		 15.00
62.50
90		 8.44
70.83
80		 7.50
35.42
40		 15.00
66.67
80		 15.31
66.67
80		 15.62
66.67
80		 15.94
66.67
80
1.5
KVA		 KVA
AMPS
FUSE
 5.64
46.88
80		 10.63
93.75
150		 11.16
93.75
150		 11.05
46.88
70		 11.42
46.88
70		 21.50
93.75
125		 22.00
93.75
125		 22.50
93.75
125		 12.66
106.25
125		 11.25
53.13
60		 22.50
100.00
125		 22.97
100.00
125		 23.44
100.00
125		 23.91
1000
125
2
KVA		 KVA
AMPS
FUSE
 5.64
46.88
80		 10.63
93.75
150		 11.16
93.75
150		 11.05
46.88
70		 11.42
46.88
70		 21.50
93.75
125		 22.00
93.75
125		 22.50
93.75
125		 12.66
106.25
125		 11.25
53.13
60		 22.50
100.00
125		 22.97
100.00
125		 23.44
100.
125		 31.87
133.33
75
3
KVA		 KVA
AMPS
FUSE
 11.28
93.75
150		 21.25
167.50
300		 22.31
187.50
300		 22.10
93.75
150		 22.84
93.75
150		 43.00
187.51
250		 44.00
187.50
2500		 45.00
187.50
250		 25.31
212.50
250		 22.50
106.25
125		 45.00
200.00
250		 45.94
200.00
250		 46.87
200.
250		 47.81
200.00
250
5
KVA		 KVA
AMPS
FUSE
 18.80
156.25
250		 35.42
312.5
450		 37.19
312.50
450		 36.83
156.25
225		 38.07
156.25
225		 71.67
312.50
460		 73.33
312.50
460
 75.00
312.50
450
 42.19
354.17
400		 37.50
177.08
200		 75.00
333.33
400		 76.56
333.33
400		 78.12
333.33
400		 79.893
33.33
400
B A A D D C C C A D C C C C

Boosting

Bucking
Line
Voltage		 183Y/1
06		 208Y/1
20		 195 208 225 240 245 250 256 265 272
Load
Voltage		 208Y/1
20		 236Y/1
36		 208 236 240 208 230 234 240 234 240
0.05
KVA		 KVA
AMPS
FUSE		 1.12
3.13
5		 1.28
3.13		 1.13
3.12
5		 0.64

1.56
205

 1.30
3.12
5		 0.65
1.80
2.5		 1.33
3.33
5		 1.35
3.33
5		 1.39
3.33
5		 0.72
1.77
2.5		 0.74
1.77
2.5
0.075
KVA		 KVA
AMPS
FUSE		 1.68
4.89
8		 1.91
4.69
8		 1.69
4.69
8		 0.96
2.34
4		 1.95
4.69
4		 0.97
2.70
3		 1.99
5.00
6		 2.08
5.00
6		 2.08
5.00
6		 1.08
2.66
3		 1.10
2.66
3
0.1
KVA		 KVA
AMPS
FUSE		 2.25

6.25
10		 2.56
6.25
10		 2.25
6.25
10		 1.28
3.13
5		 2.60
6.25
10		 1.30
3.61
5		 2.65
6.67
10		 2.71
6.67
10		 2.77
6.67
10		 1.47
3.54
5
0.15
KVA		 KVA
AMPS
FUSE		 3.37
9.36
15		 3.83
9.38
15		 3.38
9.37
15		 1.91
4.69
8		 3.90
9.37
15		 1.96
5.41
6		 3.98
10.00
15		 4.06
10.00
15		 4.16
10.00
15		 2.15
5.31
6		 2.21
5.31
6
0.25
KVA		 KVA
AMPS
FUSE		 5.61
15.63
25		 6.83
15.82
25		 5.63
15.62
25		 3.19
7.81
12		 6.50
15.82
25		 3.25
9.01
10		 6.83
16367
20		 6.77
16.67
20		 6.93
16.67
20		 3.39
16.367
20		 3.68
8.85
10
0.5
KVA		 KVA
AMPS
FUSE		 11.23
31.25
45		 12.76
31.25
45		 11.25
31.25
45		 6.38
15.83
25		 12.99
31.25
45		 6.50
18.03
20		 13.25
33.33
40		 13.53
33.33
40		 13.86
33.33
40		 7.17
17.71
20		 7.36
17.71
20
0.75
KVA		 KVA
AMPS
FUSE		 16.84
46.88
70		 19.14
46.88
70		 16.89
46.87
70		 9.58
23.44
35		 19.49
46.87
70		 9.74
27.04
30		 19.89
50.00
60		 20.30
50.00
60		 20.78
50.00
60		 10.75
26.56
30		 11.04
26.56
30
1
KVA		 KVA
AMPS
FUSE		 22.45
62.50
90		 25.52
62.50
90		 22.52
62.50
90		 12.76
31.25
45		 25.98
62.50
90		 12.99
36.06
40		 26.52
66.67
80		 27.06
66.67
80		 27.71
66.67
80		 14.34
25.42
40		 14.72

25.42
30
1.5
KVA		 KVA
AMPS
FUSE		 33.68
93.75
150		 38.28
93.75
150
 33.77
93.75
125		 19.14
46.88
70		 38.97
93.75
125		 19.49
54.09
60		 39.78
100.00
125		 40.59
100.00
125		 41.57
100.00
125		 21.52
53.13
60		 22.08
53.15
60
2
KVA		 KVA
AMPS
FUSE		 44.90
125.00
200		 51.04
125.00
200		 45.03
125.00
175		 25.52
62.50
90		 51.96
125.00
175		 25.98
72.12
60		 53.04
133.33
175		 54.13
133.33
175		 56.43
133.33
175		 28.69
70.83
80		 29.44
70.83
80
3
KVA		 KVA
AMPS
FUSE		 67.36
187.50
300		 76.56
187.50
300		 67.56
187.50
250		 38.28
93.75
150		 77.94
187.50
125		 38.97
108.17
125		 79.57
200.00
250		 81.19
200.00
250		 83.14
200.00
250		 83.14
200.00
250		 44.17
106.25
125
5
KVA		 KVA
AMPS
FUSE		 1.12
312.50
450		 127.59
312.0
450
 112.58
312.50
450		 63.80
156.25
225		 129.90
312.50
450		 64.95
180.29
200		 136.31
333.33
400		 136.32
333.33
400		 138.56
333.33
400		 71.72
177.08
220		 73.61
177.08
200
Number
of
Transformers		 3 3 2 2 2 2 2 2 2 2 2
Diagram F F H G H L H H H G G
University Entrance
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