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5.3. MIG welding torch and earth cable connection
Pay attention to the polarity of the wiring before MIG. Generally, there are two wiring methods
for DC welder: DCEP and DCEN.
DCEP: The polarity changeover connector is connected to the positive polarity, and the
workpiece is connected to the negative polarity;
DCEN: The polarity changeover connector is connected to the negative polarity, and the
workpiece is connected to the positive polarity.
If MIG is selected, except for carbon steel flux-cored self-shielded welding, which
uses DCEN, this series of welders generally use DCEP for other gas-shielded welding
types.
5.3.1 DCEP
1) Ensure that the welder power switch is turned off.
2) Insert the torch plug into the Euro MIG torch interface on the front panel of the welder and
tighten it clockwise.
3) Insert the cable plug with earth clamp into the negative polarity socket on the front panel of
the welder and tighten it clockwise.
4) Insert the polarity changeover connector into the positive polarity socket on the front panel
of the welder and tighten it clockwise.
5) Connect one end of the gas hose to the gas valve inlet on the rear panel of the welder, and
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