Weld Output Terminals And Selecting Cable Sizes - Miller Dimension NT 450 Owner's Manual

5-4. 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 be-
fore connecting to
weld output termi-
nals.
!
Do not use worn,
damaged, under-
sized, or poorly
spliced cables.
Welding
Amperes
Positive Negative
Terminal
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)
.
A complete Parts List is available at www.MillerWelds.com
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)
300 ft 350 ft
(90 m) (105 m) (120 m)
2
AWG (mm )
1 (50) 1/0 (60)
2/0 (70) 3/0 (95)
3/0 (95) 4/0 (120) 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)
Ref. S-0007-J 2011−07
OM-2252 Page 17
400 ft
1/0 (60)
3/0 (95)
2x2/0
(2x70)
2x3/0
(2x95)
2x4/0
(2x120)
2x4/0
(2x120)
3x3/0
(3x95)
3x4/0
(3x120)
4x4/0
(4x120)