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3-7. 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.
Weld Output
Terminals
!
Turn off power be-
fore connecting to
weld output termi-
nals.
!
Do not use worn,
damaged,
under-
sized, or repaired
cables.
Welding
Amperes
This chart is a general guideline and may not suit all applications. If cable overheats, use next size larger cable.
*
**Weld cable size (AWG) is based on either a 4 volts or less drop or a current density of at least 300 circular mils per ampere.
2
( ) = mm
for metric use
***For distances longer than those shown in this guide, call a factory applications rep. at 920-735-4505 (Miller) or 1-800-332-3281 (Hobart).
Weld Cable Size** and Total Cable (Copper) Length in Weld Circuit
100 ft (30 m) or Less
10 − 60%
60 − 100%
Duty
Duty
Cycle
Cycle
2
AWG (mm
)
AWG (mm
100
4 (20)
4 (20)
150
3 (30)
3 (30)
200
3 (30)
2 (35)
250
2 (35)
1 (50)
300
1 (50)
1/0 (60)
350
1/0 (60)
2/0 (70)
400
1/0 (60)
2/0 (70)
500
2/0 (70)
3/0 (95)
600
3/0 (95)
4/0 (120)
700
4/0 (120)
2x2/0 (2x70)
800
4/0 (120)
2x2/0 (2x70)
900
2x2/0 (2x70)
2x3/0 (2x95)
1000
2x2/0 (2x70)
2x3/0 (2x95)
2x4/0
1250
2x3/0 (2x95)
(2x120)
1500
600 (300)
750 (400)
Not Exceeding***
150 ft
200 ft
250 ft
(45 m)
(60 m)
(70 m)
10 − 100% Duty Cycle
2
)
4 (20)
3 (30)
2 (35)
2 (35)
1 (50)
1/0 (60)
1 (50)
1/0 (60)
2/0 (70)
1/0 (60)
2/0 (70)
3/0 (95)
2/0 (70)
3/0 (95)
4/0 (120)
2x2/0
3/0 (95)
4/0 (120)
(2x70)
2x2/0
3/0 (95)
4/0 (120)
(2x70)
2x2/0
2x3/0
4/0 (120)
(2x70)
(2x95)
2x2/0
2x3/0
2x4/0
(2x70)
(2x95)
(2x120)
2x3/0
2x4/0
3x3/0
(2x95)
(2x120)
(3x95)
2x3/0
2x4/0
3x4/0
(2x95)
(2x120)
(3x120)
2x4/0
3x3/0
3x4/0
(2x120)
(3x95)
(3x120)
2x4/0
3x3/0
4x3/0
(2x120)
(3x95)
(4x95)
3x3/0
4x3/0
4x4/0
(3x95)
(4x95)
(4x120)
2x750
1000 (500)
(2x400)
300 ft
350 ft
(90 m)
(105 m)
2
AWG (mm
)
1 (50)
1/0 (60)
2/0 (70)
3/0 (95)
3/0 (95)
4/0 (120)
2x2/0
4/0 (120)
(2x70)
2x2/0
2x3/0
(2x70)
(2x95)
2x3/0
2x3/0
(2x95)
(2x95)
2x3/0
2x4/0
(2x95)
(2x120)
2x4/0
3x3/0
(2x120)
(3x95)
3x3/0
3x4/0
(3x95)
(3x120)
3x4/0
3x4/0
(3x120)
(3x120)
3x4/0
4x4/0
(3x120)
(4x120)
4x4/0
4x4/0
(4x120)
(4x120)
4x4/0
(4x120)
Ref. S-0007-K 2013−09
OM-2238 Page 15
400 ft
(120 m)
1/0 (60)
3/0 (95)
4/0 (120)
2x2/0
(2x70)
2x3/0
(2x95)
2x4/0
(2x120)
2x4/0
(2x120)
3x3/0
(3x95)
3x4/0
(3x120)
4x4/0
(4x120)
4x4/0
(4x120)
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