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% Duty

 

 

10 – 100% Duty Cycle

 

 

 

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

 

 

 

 

 

 

 

 

 

 

*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

4-8. Remote 14 Receptacle Information

NOTE

Engine runs at weld/power speed whenever a device connected to the remote 14 receptacle is running.

A

J

B

K

I

 

 

C

L N

H

D

M

G

 

E

F

ST-801 943-B

 

Socket*

Socket Information

24 VOLTS AC

A

24 volts ac.

 

 

 

B

Contact closure to A completes 24 volt ac contac-

 

 

tor control circuit. Protected by circuit breaker

 

 

CB5.

115 VOLTS AC

I

115 volts ac.

 

 

 

J

Contact closure to I completes 115 volt ac contac-

 

 

tor control circuit. Protected by circuit breaker

 

 

CB6.

 

C

0 to +10 volts dc output to remote control.

A/V

D

Remote control circuit common.

AMPERAGE

 

 

VOLTAGE

E

0 to +10 volts dc input command signal from

 

 

remote control.

 

G

Circuit common for 24 and 115 volt ac circuits.

GND

K

Chassis common.

 

*The remaining sockets are not used.

OM-486 Page 16

Page 20
Image 20
Miller Electric 251 NT manual Selecting Weld Cable Sizes, Remote 14 Receptacle Information, 100 ft 30 m Or Less

251 NT specifications

The Miller Electric 251 NT is a highly regarded multi-process welding machine known for its versatility and advanced features, making it an ideal choice for professionals in various industries. With its robust construction and user-friendly interface, the 251 NT provides an efficient solution for MIG, TIG, and Stick welding applications.

One of the main features of the Miller Electric 251 NT is its impressive output range, which allows for welding on a variety of materials and thicknesses. It delivers up to 250 amps of power, enabling users to tackle both thin and thick metals with ease. Additionally, the machine is equipped with an Auto-Set feature, which automatically adjusts the welding settings according to the material thickness and type. This eliminates the guesswork, significantly enhancing productivity and reducing setup time.

Another noteworthy aspect of the Miller Electric 251 NT is its inverter technology. This advanced technology provides a compact, lightweight design without compromising performance. Inverter technology allows for greater energy efficiency, resulting in reduced operational costs over time. The 251 NT also features a Duty Cycle of 60% at 250 amps, which means it can handle demanding tasks while maintaining optimal performance.

The Miller Electric 251 NT is designed with user convenience in mind. The intuitive digital display offers clear visibility of the settings, allowing welders to make quick adjustments. Furthermore, the machine includes a built-in memory function to store frequently used parameters, enhancing workflow efficiency.

Safety is a key component of the 251 NT's design. It comes equipped with various safety features, including overload protection and a thermal overload warning system. These features ensure that the machine operates within safe limits, minimizing the risk of damage and ensuring longevity.

In terms of portability, the Miller Electric 251 NT's lightweight design and integrated handle make it easy to transport between job sites. The durable housing protects the internal components, making it suitable for rigorous use in demanding environments.

Overall, the Miller Electric 251 NT offers a combination of power, flexibility, and ease of use, making it a top choice for welders looking to enhance their capabilities across multiple welding processes. Whether in a professional shop or on a construction site, the 251 NT stands out as a reliable and efficient welding solution.