Page 20
5.4. MMA electrode holder and earth cable connection
(MMA wiring diagram: DCEP)
(MMA wiring diagram: DCEN)
Pay attention to the polarity of the wiring before MMA. Generally, there are two wiring
methods for DC welder: DCEP and DCEN.
DCEP: The electrode holder is connected to the positive polarity, and the workpiece is
connected to the negative polarity;
DCEN: The electrode holder is connected to the negative polarity, and the workpiece is
connected to the positive polarity.
The operator can also choose connection method based on the base metal and electrode.
Generally speaking, DCEP is recommended for basic electrodes, while no special provisions
are made for acid electrodes.
To Next Page
Loading...
