S-0007-E

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

4-9. Selecting Cable Sizes

NOTICE 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)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Welding

10 − 60%

60 − 100%

 

 

 

 

 

 

 

Duty

 

 

10 − 100% Duty Cycle

 

 

 

Amperes

Duty 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

 

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

700

4/0

2-2/0

2-3/0

2-4/0

3-3/0

3-4/0

3-4/0

4-4/0

 

 

 

 

 

 

 

 

 

 

 

800

4/0

2-2/0

2-3/0

2-4/0

3-4/0

3-4/0

4-4/0

4-4/0

 

 

 

 

 

 

 

 

 

 

*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.

4-10. Connecting Weld Output Cables

4

 

1

 

 

 

 

 

Do not place

 

 

 

anything between

 

 

 

weld cable terminal

 

 

 

and copper bar.

 

2

 

 

Tools Needed:

3

 

 

 

 

 

3/4 in (19 mm)

 

 

 

 

Correct Installation

! Turn off power before connecting to

1

Weld Output Terminal

weld output terminals.

 

2

Supplied Weld Output Terminal Nut

! Failure to properly connect weld

3

Weld Cable Terminal

cables may cause excessive heat

4

Copper Bar

and start a fire, or damage your ma-

Remove supplied nut from weld output ter-

chine.

 

minal. Slide weld cable terminal onto weld

803 778-B

Incorrect Installation

output terminal and secure with nut so that weld cable terminal is tight against copper bar. Do not place anything between weld cable terminal and copper bar. Make sure that the surfaces of the weld cable terminal and copper bar are clean.

OM-278 Page 15

Page 23
Image 23
Miller Electric 812, 652 manual Selecting Cable Sizes, Connecting Weld Output Cables