Weld Cable Sizes - Lincoln Electric LF-72 Operator's Manual

A-4
RECOMMENDED CABLE SIZES (RUBBER COVERED COPPER - RATED 75°C)**
Percent
Duty
Amperes Cycle
200 60
200 100
225 20
225 40 & 30
250 30
250 40
250 60
250 100
300 60
325 100
350 60
400 60
400 100
500 60
** Tabled values are for operation at ambient temperatures of 40°C and below. Applications above 40°C
may require cables larger than recommended, or cables rated higher than 75°C.
INSTALLATION
SAFETY PRECAUTION
ELECTRIC SHOCK can
kill.
• Only qualified personnel should
perform this installation.
• Turn off the input power to the power source
at the disconnect 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 disconnect switch
or fuse box before working on this equipment.
• Do not touch electrically hot parts.
--------------------------------------------------------

WELD CABLE SIZES

Table A.1 has the copper cable sizes recommended
for different currents and duty cycles. Lengths
stipulated are the distance from the welder to work
and back to the welder again. Cable sizes are
increased for greater lengths primarily for the purpose
of minimizing voltage in the welding circuit.
TABLE A.1
CABLE SIZES FOR COMBINED LENGTHS OF ELECTRODE AND WORK CABLES
0 to 50 Ft. 50 to 100Ft.
0 to 15 m 15 to 31 m
2 2
2 2
4 or 5 3
3 3
3 3
2 2
1 1
1 1
1 1
2/0
2/0
1/0 1/0
2/0 2/0
3/0 3/0
2/0 2/0
100 to 150 Ft.
31 to 48 m
2
2
2
2
2
1
1
1
1
2/0
2/0
2/0
3/0
3/0
LF-72
150 to 200 Ft. 200 to 250 Ft.
61 to 76 m
48 to 61 m
1/0
1
1 1/0
1/0
1
1/0
1
1/0
1
1 1/0
1/0
1
1/0
1
2/0
1/0
2/0 3/0
3/0
2/0
4/0
3/0
4/0
3/0
4/0
3/0
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