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OM-218 Page 15
A. Standard Module Connections
ST-144 568-C
1 Cable Restraint
Route all cables under cable
restraint.
Separate Work Connections
See Section 4-4 for proper cable
size.
2 Negative (−) Weld Output
Terminal
3 Work Cable
4 Positive (+) Weld Output
Terminal
5 Electrode Holder Cable
For Electrode Positive (Reverse
Polarity/DCEP), connect work
cable to Negative (−) terminal and
electrode holder cable to Positive
(+) terminal.
For Electrode Negative (Straight
Polarity/DCEN), reverse cable
connections.
Common Work Connections
6 Common Work Connection
Terminal
7 Common Work Cable
See Table 3-1 for proper cable size.
8 Frame Connection Terminal
9 Jumper Link
For Electrode Negative (Straight
Polarity/DCEN), connect jumper
link across Positive (+) terminal and
Frame Connection terminal, and
connect electrode holder to Nega-
tive (−) terminal.
For Electrode Positive (Reverse
Polarity/DCEP), connect jumper
link across Negative (−) terminal
and Frame Connection terminal,
and connect electrode holder to
Positive (+) terminal.
Tools Needed:
1-1/4 in
Separate Work
Connections
Common Work
Connections
6
7
3
2
8
9
4
1
5
Y READ SAFETY BLOCKS at start of Section 4-6 before proceeding.
INADEQUATE WORK CABLE CONNECTIONS can cause serious
damage to input power service and create a hazardous condition.
Connect an electrical cable of adequate size between the common
work connection terminal and the workpiece whenever any mod-
ule(s) is connected to use the frame connection terminal and the
common work connection terminal.
Y For common work connection, work cable must be able
to carry combined weld output of all modules using the
common work connection terminal (see Table 3-1 for
proper cable size). When using the common work con-
nection terminal, all connections to the common work
connection terminal must be of the same polarity.
Table 3-1. Common Work Cable Size
Common Work Cable Sizes At Main Transformer
Rated Welding Current
Cable Length Cable Size
50 Feet 2 No. 3/0
100 Feet 2 No. 4/0
150 Feet 3 No. 3/0
200 Feet 3 No. 4/0