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3-8. Positioning Jumper Links
3-9. Electrical Service Guide
Failure to follow these fuse and circuit breaker recommendations could create an electric shock or fire hazard. These
recommendations are for a dedicated branch circuit that applies to the rated output and duty cycle of the welding power source.
Input Voltage
Input Amperes At Rated Output
Max Recommended Standard Fuse Rating In
1
Amperes
2
Time-Delay
3
Normal Operating
Min Input Conductor Size In AWG
Max Recommended Input Conductor Length
In Feet (Meters)
Min Grounding Conductor Size In AWG
** Power cord supplied with the unit is sized for 230V operation. Larger power cord may be required for cable lengths greater than 3 meters. C
onsult national and local regulations.
Reference: 2005 National Electrical Code (NEC) (including article 630)
1 If a circuit breaker is used in place of a fuse, choose a circuit breaker with time-current curves comparable to the recommended fuse.
2 "Time-Delay" fuses are UL class "RK5" .
3 "Normal Operating" (general purpose - no intentional delay) fuses are UL class "K5" (up to and including 60 amp), and UL class "H" ( 65 amp and
above).
4 Conductor data in this section specifies conductor size (excluding flexible cord or cable) between the panelboard and the equipment per NEC Table
310.16. If a flexible cord or cable is used, minimum conductor size may increase. See NEC Table 400.5(A) for flexible cord and cable requirements.
230/400 Volt Models
230 V
380/520 Volt Models
380 V
253
230
400
230
36
21
45
25
50
30
4
10
14
106
127
107
(32)
(39)
(33)
4
10
14
400 V
520 V
343
380
400
520
230
55
32
32
23
73
60
40
30
80
40
40
50
80
48
35
110
8
10
12
12
8
193
130
220
84
(59)
(40)
(67)
(25)
8
10
12
12
8
Check input voltage available at
site.
1
Jumper Links Access
Remove side panel.
2
Jumper Link Label
Check label − only one is on unit.
3
Input Voltage Jumper Links
Move jumper links to match input
voltage.
Close and secure side panel.
Ref. S9215023 / Ref S9215018
403
443
400
230
380
400
42
80
47
47
50
100
50
60
60
60
125
70
70
10
6
8
10
168
114
202
148
(51)
(35)
(61)
(45)
10
6
8
10
OM-233 381 Page 13
520
36
40
50
10
251
(76)
10
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