Output Polarity Connections - Lincoln Electric POWER MIG SVM167-A Service Manual

A-4
3. The 208/230 volt 50/60 Hz model POWER MIG® is
shipped with a 7 ft.(2.1m). input cable and plug con-
nected to the welder.
4. Using the instructions in Figure A.2, have a qualified
electrician connect
Supplied) or cable to the input power lines and the
system ground per the U.S. National Electrical Code
and any applicable local codes. See "Technical
Specifications" at the beginning of this chapter for
proper wire sizes. For long runs over 100 feet, larg-
er copper wires should be used. Fuse the two hot
lines with super lag type fuses as shown in the fol-
lowing diagram. The center contact in the receptacle
is for the grounding connection. A green wire in the
input cable connects this contact to the frame of the
welder. This ensures proper grounding of the welder
frame when the welder plug is inserted into a
grounded receptacle.
FIGURE A.2 — Receptacle Diagram
INSTALLATION
FIGURE A.1 — Dual Voltage Machine Input Connections
a receptacle (Customer
CONNECT TO A SYSTEM
GROUNDING WIRE. SEE
THE UNITED STATES
NATIONAL ELECTRICAL
CODE AND/OR LOCAL
CODES FOR OTHER
DETAILS AND MEANS FOR
PROPER GROUNDING.
CONNECT TO HOT WIRES
OF A THREE-WIRE, SINGLE
PHASE SYSTEM.
POWER MIG® 215

OUTPUT POLARITY CONNECTIONS

The welder, as shipped from the factory, is connected
for electrode positive (+) polarity. This is the normal
polarity for GMA welding.
If negative (–) polarity is required, interchange the con-
nection of the two cables located in the wire drive com-
partment near the front panel. The electrode cable,
which is attached to the wire drive, is to be connected
to the negative (–) labeled terminal and the work lead,
which is attached to the work clamp, is to be connect-
ed to the positive (+) labeled terminal.
A-4