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. 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
W
e
ld P
rocess
W
e
ld P
o
l
ar
i
ty
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