Lincoln Electric BIG RED 500, Operator'S Manual, Page: 12 / 68

A-5
INSTALLATION
BIG RED™ 500
A-5
MUFFLER OUTLET PIPE
Remove the plastic plug covering the muffler outlet
tube. Using the clamp provided secure the outlet pipe
to the outlet tube with the pipe positioned such that it
will direct the exhaust in the desired position
.
SPARK ARRESTOR
Some federal, state or local laws may require that
petrol or diesel engines be equipped with exhaust
spark arrestors when they are operated in certain
locations where unarrested sparks may present a fire
hazard. The standard muffler included with this welder
does not qualify as a spark arrestor. When required by
local regulations, a suitable spark arrestor, must be
installed and properly maintained.
An incorrect arrestor may lead to damage to the
engine or adversely affect performance.
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WELDING OUTPUT CABLES
With the engine off, connect the electrode and work
cables to the output studs. The welding process dic-
tates the polarity of the electrode cable. These con-
nections should be checked periodically and tightened
if necessary.
Listed in Table A.1 are copper cable sizes recom-
mended for the rated current and duty cycle. 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 cable voltage drop.
Table A.1 Combined Length of Electrode and
Work Cables.
MACHINE GROUNDING
Because this portable engine driven welder creates its
own power, it is not necessary to connect its frame to
an earth ground, unless the machine is connected to
premises wiring (home, shop, etc.).
To prevent dangerous electric shock, other equipment
powered by this engine driven welder must:
a) be grounded to the frame of the welder using
a grounding type plug,
or
b) be double insulated.
When this welder is mounted on a truck or trailer, its
frame must be securely connected to the metal frame
of the vehicle. When this engine driven welder is con-
nected to premises wiring such as that in a home or
shop, its frame must be connected to the system earth
ground. See further connection instructions in the sec-
tion entitled “Standby Power Connections” as well as
the article on grounding in the latest National
Electrical Code and the local codes.
In general, if the machine is to be grounded, it should
be connected with a #8 or larger copper wire to a solid
earth ground such as a metal ground stake going into
the ground for at least 10 Feet or to the metal frame-
work of a building which has been effectively ground-
ed. The National Electric Code lists a number of alter-
nate means of grounding electrical equipment. A
machine grounding stud marked with the symbol
is provided on the front of the welder.
CAUTION
AMPS Up to 150 ft. 150-200 ft. 200-250 ft.
@100% ( Up to 45m) (45-60m) (60-75m)
Duty Cycle
400 3/0 AWG 3/0 AWG 4/0 AWG
95mm 2 95mm 2 120mm 2
TOTAL COMBINED LENGTH OF ELECTRODE
AND WORK CABLES