Electrical Output Connections; Welding Cable Connections; Cable Installation And Cable Sizes - Lincoln Electric CLASSIC III SVM 137-A Service Manual

A-6
ELECTRICAL OUTPUT
CONNECTIONS
See Figure A.1 for the location of the 115 and 230 volt
receptacles, weld output terminals, and ground stud.

WELDING CABLE CONNECTIONS

CABLE INSTALLATION AND CABLE SIZES

With the engine off, connect the electrode and work
cables to the terminals located on the fuel tank mount-
ing rail. (See size recommendations below.) For posi-
tive polarity, connect the electrode cable to the terminal
marked Positive (+). For Negative polarity, connect the
electrode cable to the Negative (-) terminal. These con-
nections should be checked periodically and tightened
if necessary.
FIGURE A.1 - CLASSIC III & CLASSIC IIID OUTPUT CONNECTIONS
3
1
TABLE A.1 - RECOMMENDED COPPER WELDING CABLE SIZE AND LENGTH
TOTAL COMBINED LENGTH OF ELECTRODE AND WORK CABLES
Amps
225
300
350
INSTALLATION
• Loose connections will cause the output terminals to
overheat. The terminals may eventually melt.
• Do not cross the welding cables at the output terminal
connection. Keep the cables isolated and separate
from one another.
When welding at a considerable distance from the
welder, be sure you use ample size welding cables.
Table A.1 lists recommended cable sizes and lengths
for rated current and duty cycle. Length refers to the
distance from the welder to the work and back to the
welder. Cable diameters are increased for long cable
lengths to reduce voltage drops.
Lincoln Electric offers a welding accessory kit with the
properly
Accessories section of this manual for more
information.
2
Duty Cycle Up to 200 ft.
100%
50%
30%
Classic III and IIID
CAUTION
specified welding
4
1
1. 230 VAC RECEPTACLE
2. 115 VAC RECEPTACLE
3. OUTPUT TERMINALS
4. GROUND STUD
Cable sizes for combined length of
electrode plus work cable
200 to 250 ft.
1
1/0
2/0
A-6
cables. See the
1/0
2/0
3/0