Baldor 22H series Installation & Operating Manual page 22

Section 1
General Information
Table 3-5 Wire Size and Protection Devices - 230 VAC Controls
Control Output Control O tp t
P Power Rating R ti
10
15
20
25
30
40
50
Note: All wire sizes based on 75 C copper wire, 3% line impedance. Higher temperature smaller gauge wire may be
used per NEC and local codes. Recommended fuses/breakers are based on 25 C ambient, maximum
continuous control output current and no harmonic current.
Table 3-6 Wire Size and Protection Devices - 460 VAC Controls
Control O tp t Control Output
Power Rating P R ti
10
15
20
25
30
40
50
60
75
100
125
150
200
250
300
350
400
450
Note: All wire sizes based on 75 C copper wire, 3% line impedance. Higher temperature smaller gauge wire may be
used per NEC and local codes. Recommended fuses/breakers are based on 25 C ambient, maximum
continuous control output current and no harmonic current.
MN722
Wire Size and Protection Devices
Table 3-5 lists the recommended wire size and the breaker or fuse size for each control.
The specified wire sizes and protective devices are based on the maximum output power
possible from the control. If the control is programmed for an operating zone that
provides less output power, the wire size and the rating of the protective devices may be
reduced but must meet NEC and other applicable codes.
p Input Breaker Inp t Breaker p
Fast Acting
35A
50A
60A
80A
100A
125A
150A
p Input Inp t p
Breaker B k
Fast Acting
20A
25A
30A
40A
45A
60A
70A
90A
125A
150A
175A
200A
250A
350A
400A
500A
600A
600A
Input Fuse Inp t F se
Time Delay
40A 35A
60A 50A
80A 60A
100A 80A
125A 100A
150A 125A
200A 150A
Input Fuse Inp t F se
Time Delay
25A 17.5A
30A 25A
40A 30A
50A 40A
60A 45A
80A 60A
100A 75A
125A 90A
150A 125A
200A 150A
250A 175A
300A 200A
350A 250A
450A 350A
500A 400A
600A 500A
800A 600A
800A 600A
Wire Gauge Wire Ga ge
2
AWG mm
10 10
8 10
4 25
4 25
3 30
1 50
2/0 70
Wire Gauge Wire Ga ge
2
AWG mm
12 4
10 6
8 10
8 10
6 16
4 25
4 25
2 35
1/0 54
2/0 70
2/0 70
4/0 120
(2)1/0 (2)54
(2)3/0 (2)95
(2)4/0 (2)120
(3)4/0 (3)120
(3)250 mcm (3)125
(3)250 mcm (3)125
Receiving & Installation 3-11