Complete Parts List available at www. MillerWelds.com
OM-228 042 Page 20
5-7. Weld Process/Polarity Table
Weld Process
Weld Polarity
Cable Connections
Weld Process
Weld Polarity
Wire Drive Lead
Work Clamp Lead
GMAW
−
Solid wire with shield-
ing gas
DCEP
−
Reverse polarity
Connect to positive (+) out-
put terminal
Connect to negative (
−
) output
terminal
FCAW
−
Self-shielding wire
−
no shielding gas
DCEN
−
Straight Polarity
Connect to negative (
−
)
output terminal
Connect to positive (+) output
terminal
5-8. Changing Weld Polarity
Connection hardware must be
tightened with proper tools. Do
not just hand tighten hardware.
A loose electrical connection
will cause poor weld perfor-
mance and excessive heating
at the terminal block.
1
Lead Connections For Direct
Current Electrode Negative
(DCEN)
2
Lead Connections For Direct
Current Electrode Positive
(DCEP)
Always read and follow wire
manufacturer’s recommended po-
larity, and see Section 5-7.
Close door.
1
2
Ref. 230 748-B