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3-9. Weld Output Terminals And Selecting Cable Sizes
NOTICE
−
The Total Cable Length in Weld Circuit (see table below) is the combined length of both weld cables. For example, if the power source is
100 ft (30 m) from the workpiece, the total cable length in the weld circuit is 200 ft (2 cables x 100 ft). Use the 200 ft (60 m) column to determine cable
size.
!
Turn off power be-
fore connecting to
weld output termi-
nals.
!
Do not use worn,
damaged, under-
sized, or poorly
spliced cables.
Weld Output
Terminals
Weld Cable Size** and Total Cable (Copper) Length in Weld Circuit
Not Exceeding***
30 m (100 ft) or Less
45 m
(150 ft)
60 m
(200 ft)
70 m
(250 ft)
90 m
(300 ft)
105 m
(350 ft)
120 m
(400 ft)
Welding
Amperes
10
−
60%
Duty
Cycle
mm
2
(AWG)
60
−
100%
Duty
Cycle
mm
2
(AWG)
10
−
100% Duty Cycle
mm
2
(AWG)
Positive
receptacle
MIG
Positive
receptacle
TIG/Stick
Negative receptacle
MIG/TIG/Stick
Gas
100
20 (4)
20 (4)
20 (4)
30 (3)
35 (2)
50 (1)
60 (1/0)
60 (1/0)
150
30 (3)
30 (3)
35 (2)
50 (1)
60 (1/0)
70 (2/0)
95 (3/0)
95 (3/0)
200
30 (3)
35 (2)
50 (1)
60 (1/0)
70 (2/0)
95 (3/0)
120 (4/0)
120 (4/0)
250
35 (2)
50 (1)
60 (1/0)
70 (2/0)
95 (3/0)
120 (4/0)
2x70
(2 ea. 2/0)
2x70
(2 ea. 2/0)
300
50 (1)
60 (1/0)
70 (2/0)
95 (3/0)
120 (4/0)
2x70
(2 ea. 2/0)
2x95
(2 ea. 3/0)
2x95
(2 ea. 3/0)
350
60 (1/0)
70 (2/0)
95 (3/0)
120 (4/0)
2x70
(2 ea. 2/0)
2x95
(2 ea. 3/0)
2x95
(2 ea. 3/0)
2x120
(2 ea. 4/0)
400
60 (1/0)
70 (2/0)
95 (3/0)
120 (4/0)
2x70
(2 ea. 2/0)
2x95
(2 ea. 3/0)
2x120
(2 ea. 4/0)
2x120
(2 ea. 4/0)
500
70 (2/0)
95 (3/0)
120 (4/0)
2x70
(2 ea. 2/0)
2x95
(2 ea. 3/0)
2x120
(2 ea. 4/0)
3x95
(3 ea. 3/0)
3x95
(3 ea. 3/0)
600
95 (3/0)
120 (4/0)
2x70
(2 ea. 2/0)
2x95
(2 ea. 3/0)
2x120
(2 ea. 4/0)
3x95
(3 ea. 3/0)
3x120
(3 ea. 4/0)
3x120
(3 ea. 4/0)
*
This chart is a general guideline and may not suit all applications. If cable overheats, use next size larger cable.
**Weld cable size is based on either a 4 volts or less drop or a current density of at least 300 circular mils per ampere.
***For distances longer than those shown in this guide, call a factory applications representative.
Milan Ref. S-0007-G 2009
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08