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3-11. Electrical Service Guide
Failure to follow these electrical service guide recommendations could create an electric shock or fire hazard. These recommenda-
tions are for a dedicated branch circuit sized for the rated output and duty cycle of the welding power source.
Input Voltage
Input Amperes At Rated Output
Max Recommended Standard Fuse Rating In Amperes
Circuit Breaker
Min Input Conductor Size In AWG
Max Recommended Input Conductor Length In Feet (Meters)
Min Grounding Conductor Size In AWG
Reference: 2005 National Electrical Code (NEC) (including article 630)
1 Choose a circuit breaker with time-current curves comparable to a Time Delay 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.
3-12. Placing Jumper Links
1
Tools Needed:
3/8 in
OM-225 757 Page 16
1
2
, Time-Delay
3
Normal Operating
4
4
200 VOLTS
230 VOLTS
153 980-C
230 VOLTS 460 VOLTS 575 VOLTS
2
Do not overtighten
jumper link nuts.
3/8 in
60 Hz Single Phase
200
66
80
100
8
65
(20)
8
!
Check input voltage available at
site.
Remove side panel from welding
power source.
1
Check label.
2
Move jumper links to match input
voltage.
Install side panel on welding power
source, or go on to Section 3-13.
144 916-D
230
460
575
57
29
23
70
35
25
80
40
35
8
10
12
87
229
217
(27)
(70)
(66)
8
10
12
Disconnect and lockout/tag-
out input
power
before
installing or moving jumper
links.
Jumper Link Label
Jumper Links
Ref. 804 352-C
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