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5 OPERATION
NOTE!
Auxiliary transformer external supply (115 V AC). Neutral not bonded to PE.
5.3
Connecting welding and return cables
The power source has two outputs, a positive terminal (+) and a negative terminal (-), for
connecting welding and return cables. The output to which the welding cable is connected
depends on the welding method or type of electrode used.
Connect the return cable to the other output on the power source. Secure the return cable's
contact clamp to the workpiece, and make sure that there is a good contact between the
workpiece and the output for the return cable on the power source.
For SMAW welding, the welding cable can be connected to the positive terminal (+) or
negative terminal (-), depending on the type of electrode used. The connection polarity is
stated on the electrode packaging.
Recommended maximum current values for connection cables set
At an ambient temperature of +25°C and a normal 10-minute cycle:
Cable area
100%
0.08 in² (50
280 A
2
mm
)
0.11 in² (70
350 A
2
mm
)
0.15 in² (95
430 A
2
mm
)
0.19 in² (120
500 A
2
mm
)
2
700 A
2×70 mm
Use additional cables in parallel if the current-carrying capacity of the cable presented in the
table is exceeded.
At an ambient temperature of +40°C and a normal 10-minute cycle:
Cable area
100%
0.08 in² (50
250 A
2
mm
)
0.11 in² (70
310 A
2
mm
)
0.15 in² (95
370 A
2
mm
)
0.19 in² (120
430 A
2
mm
)
2
740 A
2×95 mm
Use additional cables in parallel if the current-carrying capacity of the cable presented in the
table is exceeded.
0463 730 001
Duty cycle
60%
35%
310 A
370 A
400 A
480 A
500 A
600 A
580 A
720 A
800 A
960 A
Duty cycle
60%
35%
270 A
320 A
350 A
420 A
430 A
520 A
510 A
620 A
860 A
1040 A
- 20 -
Voltage loss / 10 m
0.35 V / 100 A
0.25 V/100 A
0.19 V/100 A
0.15 V/100 A
0.25 V/100 A
Voltage loss / 10 m
0.37 V/100 A
0.27 V/100 A
0.20 V/100 A
0.16 V/100 A
0.20 V/100 A
© ESAB AB 2021
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