3-6. Weld Output Terminals And Selecting Cable Sizes

Y ARC WELDING can cause Electromagnetic Interference.

To reduce possible interference, keep weld cables as short as possible, close together, and down low, such as on the floor. Locate welding operation 100 meters from any sensitive electronic equipment. Be sure this welding machine is installed and grounded according to this manual. If interference still occurs, the user must take extra measures such as moving the welding machine, using shielded cables, using line filters, or shielding the work area.

 

 

 

 

Total Cable (Copper) Length In Weld Circuit Not Exceeding

 

 

 

 

100 ft (30 m) Or Less

150 ft

200 ft

250 ft

300 ft

350 ft

400 ft

 

 

 

(45 m)

(60 m)

(70 m)

(90 m)

(105 m)

(120 m)

 

 

 

 

 

Weld Output

Welding

10 – 60%

60 – 100%

 

 

 

 

 

 

Duty

Duty

 

 

10 – 100% Duty Cycle

 

Terminals

Amperes

 

 

 

Cycle

Cycle

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100

4

4

4

3

2

1

1/0

1/0

 

 

150

3

3

2

1

1/0

2/0

3/0

3/0

 

 

200

3

2

1

1/0

2/0

3/0

4/0

4/0

 

 

250

2

1

1/0

2/0

3/0

4/0

2-2/0

2-2/0

 

 

300

1

1/0

2/0

3/0

4/0

2-2/0

2-3/0

2-3/0

 

 

350

1/0

2/0

3/0

4/0

2-2/0

2-3/0

2-3/0

2-4/0

Positive

 

400

1/0

2/0

3/0

4/0

2-2/0

2-3/0

2-4/0

2-4/0

(+)

Negative

 

 

 

 

 

 

 

 

 

 

500

2/0

3/0

4/0

2-2/0

2-3/0

2-4/0

3-3/0

3-3/0

 

(–)

 

 

 

 

 

 

 

 

 

 

 

 

600

3/0

4/0

2-2/0

2-3/0

2-4/0

3-3/0

3-4/0

3-4/0

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.

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OM-188 422 Page 16

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Miller Electric 456 CC Weld Output Terminals And Selecting Cable Sizes, ARC Welding can cause Electromagnetic Interference