Weld Output Terminals And Selecting Cable Sizes - Miller Electric Millermatic 350P Aluminum Owner's Manual

5-2. 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.
Weld Output
Terminals
!
Turn off power
before connecting
to weld output
terminals.
!
Do not use worn,
damaged, under-
sized, or poorly
spliced cables.
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, see AWS Fact Sheet No. 39, Welding Cables, available from the American Welding
Society at http://www.aws.org.
.
A complete Parts List is available at www.MillerWelds.com
Weld Cable Size** and Total Cable (Copper) Length in Weld Circuit
100 ft (30 m) or Less
10 − 60% 60 − 100%
Welding
Duty Cycle Duty 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)
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)
2 ea. 2/0
3/0 (95) 4/0 (120)
(2x70)
2 ea. 2/0
3/0 (95) 4/0 (120)
(2x70)
2 ea. 2/0 2 ea. 3/0
4/0 (120)
(2x70) (2x95)
300 ft 350 ft
(90 m) (105 m) (120 m)
2
AWG (mm )
1 (50) 1/0 (60) 1/0 (60)
2/0 (70) 3/0 (95) 3/0 (95)
3/0 (95) 4/0 (120) 4/0 (120)
2 ea. 2/0 2 ea. 2/0
4/0 (120)
(2x70)
2 ea. 2/0 2 ea. 3/0 2 ea. 3/0
(2x70) (2x95)
2 ea. 3/0 2 ea. 3/0 2 ea. 4/0
(2x95) (2x95) (2x120)
2 ea. 3/0 2 ea. 4/0 2 ea. 4/0
(2x95) (2x120) (2x120)
2 ea. 4/0 3 ea. 3/0 3 ea. 3/0
(2x120) (3x95)
Ref. S-0007-M 2017−08
OM-254915 Page 15
400 ft
(2x70)
(2x95)
(3x95)