Miller Electric Bobcat 250 manual Selecting Weld Cable Sizes

. A complete Parts List is available at www.MillerWelds.com

5-7. Selecting Weld Cable Sizes*

Weld Cable Size** and Total Cable (Copper) Length in Weld Circuit

Not Exceeding***

Weld Output

Terminals

!

Turn off power before

connecting

to weld

output terminals.

150 ft

200 ft

250 ft

300 ft

350 ft

400 ft

!

Do not

use worn,

100 ft (30 m) or Less

(45 m)

(60 m)

(70 m)

(90 m)

(105 m)

(120 m)

damaged,

under-

sized,

or

poorly

spliced cables.

Welding

10 − 60%

60 − 100%

Duty

Duty

10 − 100% Duty Cycle

Amperes

Cycle

Cycle

100

4 (20)

4 (20)

4 (20)

3 (30)

2 (35)

1 (50)

1/0 (60)

1/0 (60)

150

3 (30)

3 (30)

2 (35)

1 (50)

1/0 (60)

2/0 (70)

3/0 (95)

3/0 (95)

200

3 (30)

2 (35)

1 (50)

1/0 (60)

2/0 (70)

3/0 (95)

4/0 (120)

4/0 (120)

250

2 (35)

1 (50)

1/0 (60)

2/0 (70)

3/0 (95)

4/0 (120)

2 ea. 2/0

2 ea. 2/0

(2x70)

(2x70)

300

1 (50)

1/0 (60)

2/0 (70)

3/0 (95)

4/0 (120)

2 ea. 2/0

2 ea. 3/0

2 ea. 3/0

(2x70)

(2x95)

(2x95)

350

1/0 (60)

2/0 (70)

3/0 (95)

4/0 (120)

2 ea. 2/0

2 ea. 3/0

2 ea. 3/0

2 ea. 4/0

(2x70)

(2x95)

(2x95)

(2x120)

400

1/0 (60)

2/0 (70)

3/0 (95)

4/0 (120)

2 ea. 2/0

2 ea. 3/0

2 ea. 4/0

2 ea. 4/0

(2x70)

(2x95)

(2x120)

(2x120)

500

2/0 (70)

3/0 (95)

4/0 (120)

2 ea. 2/0

2 ea. 3/0

2 ea. 4/0

3 ea. 3/0

3 ea. 3/0

(2x70)

(2x95)

(2x120)

(3x95)

(3x95)

*This chart is a general guideline and may not suit all applications. If cables overheat, 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.
( ) = mm2 for metric use	S-0007-F

***For distances longer than those shown in this guide, call a factory applications representative at 920-735-4505.

Notes

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