Weld Cable Sizes - Lincoln Electric LF-72/74 Service Manual

AA-5
RECOMMENDED CABLE SIZES (RUBBER COVERED COPPER - RATED 75°C)**
CABLE SIZES FOR COMBINED LENGTHS OF ELECTRODE AND WORK CABLES
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.
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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 AA.1
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
LF-72/74
100 to 150 Ft. 150 to 200 Ft.
31 to 48 m 48 to 61 m
2 1
2 1
2 1
2 1
2 1
1 1
1 1
1 1
1 1/0
2/0 2/0
2/0 2/0
2/0 3/0
3/0 3/0
3/0 3/0
AA-5
200 to 250 Ft.
61 to 76 m
1/0
1/0
1/0
1/0
1/0
1/0
1/0
1/0
2/0
3/0
3/0
4/0
4/0
4/0