Baldor VS1GV21-1B, Installation & Operating Manual, Page: 21 / 204

Power Wiring 4-5 MN765
Table 4-5 600VAC Three Phase Wire Size and Protective Devices
Control Rating Input Fuse (Amps) Wire Gauge
HP
Input
Amps
Fast Acting
(UL)
Fast Acting
(CUL)
Time
Delay
Semiconductor (CUL) AWG mm
2
1 1.7 6 6 5 14 2.5
2 2.7 6 6 5 14 2.5
3 3.9 10 10 8 14 2.5
5 6.1 15 15 12 14 2.5
7.5 9.0 17.5 17.5 15 14 2.5
10 11 17.5 17.5 15 14 2.5
15 17 35 35 30 10 6.0
20 22 40 40 35 10 6.0
25 27 50 50 40 8 10.0
30 32 70 *70 A70QS50-4 8 10.0
40 41 80 *80 A70QS70-4 6 16.0
50 52 80 *80 A70QS80-4 6 16.0
60 62 100 100 80 4 25.0
75 77 125 125 100 3 35.0
100 99 150 150 125 1 50.0
125 125 200 200 175 2/0 70.0
150 144 300 300 250 3/0 95.0
200 192 350 350 300
One - 250 kcmil
or Two - 1/0
150
or Two - 70
250 242 450 450 400 Two - 3/0 Two - 95
300 289 600 600 450 Two - 4/0 Two - 120
*Requires custom drive for CUL application using fast fuses.
Note: Wire sizes based on 75
0
C copper wire. Fuses based on 40
0
C ambient, max continuous output and no harmonic current.
Table 4-6 600VAC Three Phase Breaker Size
HP
UL Listed Breaker Size
(AMPS)
HP
UL Listed Breaker Size
(AMPS)
1 40
2 50
3 60 250
5 75 250
7.5 100 250
10 125 250
15 150 250
20 200 300
25 250 400
30 300 400