NEC (National Electric Code) Reccomendations
All data is based on what NEC code reccomends for the given motors at given voltages
Single Phase Motors
HP
Voltage Reccomened Breaker Reccomended Wire size
2
208
15
14
2
230
15
14
2
480
15
14
3
208
20
14
3
230
20
14
3
480
15
14
5
208
35
12
5
230
30
14
5
480
15
14
7.5
208
50
10
7.5
230
45
10
7.5
480
20
14
10
208
60
8
10
230
60
10
10
480
25
14
15
208
90
6
15
230
80
6
15
480
40
10
20
208
100
4
20
230
90
4
20
480
60
10
25
208
110
3
25
230
100
4
25
480
70
8
30
208
125
2
30
230
110
3
30
480
80
8
40
208
175 1 ought
40
230
150
1
40
480
90
6
50
230
200 2 ought
50
480
100
4
60
230
225 3 ought
60
480
110
3
75
230
250
250
75
480
125
1
100
230
350
350
100
480
200 1 ought
* Wire sized is based on 30ft or less run from main panel
*NEC reccomends copper wire type THW,THW-2, THHW,THHN,THWN,XHHW, THWN-2 or ZHHW-2
Solid copper wire is not reccomened
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