Weld Cable Sizes - Lincoln Electric LF-74 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 work-
ing on this equipment. Turn off the input power
to any other equipment connected to the weld-
ing 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 stipu-
lated 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 mini-
mizing 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-74
200 to 250 Ft.
150 to 200 Ft.
61 to 76 m
48 to 61 m
1/0
1
1/0
1
1 1/0
1/0
1
1/0
1
1/0
1
1 1/0
1/0
1
2/0
1/0
3/0
2/0
2/0 3/0
4/0
3/0
4/0
3/0
4/0
3/0
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