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A-3
PROCESS SELECTIONS AND
CONNECTIONS
WARNING
ELECTRIC SHOCK can kill.
Only qualified personnel
should perform this
installation.
Turn the input power OFF at
the main switch or fuse box before working on
this equipment. Turn off the input power to any
other equipment connected to the welding
system at the main switch or fuse box before
working on the equipment.
Do not touch electrically "Hot" parts.
Always connect the OPTIMARC® grounding lug
(located at the rear of the case) to a proper safety
(Earth) ground.
Work Connection
Connect a work lead of sufficient size between the
proper output stud on the power source and the work.
Be sure the connection to the work makes tight metal to
LWF-32GS/34GS wire feeder connection
( FIGURE A.2 ).
Special instruction as follows:
For steel pulse mode, use 90%Ar 10%CO2;
For stainless steel pulse mode, use 98%Ar 2%CO2.
INSTALLATION
metal electrical contact. Poor work lead connections
can result in poor welding performance.
To avoid interference problems with other equipment
and to achieve the best possible operation, route all
cables directly to the work and wire feeder. Avoid
excessive lengths and do not coil excess cable.
Cable sizes are increased for greater lengths primarily
for the purpose of minimizing cable drop.
Minimum work and electrode cable sizes are as follows:
Current (60% Duty Cycle)
Note: The recommended cable size may need to
change depending on its quality. When the rated
current flow goes through, the total voltage drop on
ground cable and electrode cable must not exceed 4
volts.
Figure A.2
OPTIMARC
®
CV355P
TABLE A.1
Minimum Copper
Work Cable Size
Up To 30m Length
200A
300A
400A
500A
A-3
30 mm
2
50 mm
2
70 mm
2
95 mm
2
Rev.01
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