4-6. Connecting To Weld Output Terminals

 

 

Open left side door.

 

 

1

Bracket

 

 

Route cables through bracket.

 

 

2 Positive (+) Weld Output

 

 

 

Terminal

 

 

3

Negative (−) Weld Output

 

 

 

Terminal

3

 

For Stick welding Direct Current

 

Electrode Positive (DCEP), con-

 

 

nect work cable to − terminal and

 

 

electrode holder cable to +

 

2

terminal.

 

For Direct Current Electrode Neg-

 

 

 

 

ative

(DCEN), reverse cable

 

 

connections.

 

 

If equipped with optional polarity

 

 

switch,

connect electrode holder

 

 

cable to Electrode (−) terminal and

 

 

work cable to Work (+) terminal.

Left Side

 

For MIG and FCAW welding with

CV option, connect work cable to (−) terminal and wire feeder cable to (+) terminal

Close door.

1

Tools Needed:

3/4 in

ST-158 700

4-7. Selecting Weld Cable Sizes

 

 

Total Cable (Copper) Length In Weld Circuit Not Exceeding

 

 

 

 

 

 

 

 

 

 

 

 

Welding

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)

Amperes

 

 

 

 

 

 

 

 

 

 

 

 

 

10 − 60%

60 − 100%

 

 

10 − 100% Duty Cycle

 

 

 

Duty Cycle

Duty 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

 

 

 

 

 

 

 

 

 

 

400

1/0

2/0

3/0

4/0

2-2/0

2-3/0

 

2-4/0

2-4/0

 

 

 

 

 

 

 

 

 

 

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. Contact your

distributor for the mm2 equivalent weld cable sizes.

S-0007-E

OM-129 647 Page 17

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Miller Electric 500DX R, OM-129 manual Connecting To Weld Output Terminals, Selecting Weld Cable Sizes