Lincoln Electric IM801 RED-D-ARC GX 300 - Manual (Page 13)

Use a #8 or larger copper wire connected between the
machine grounding stud and the frame of the vehicle.
When this engine driven welder is connected 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 section enti-
tled "Standby Power Connections" as well as the arti-
cle on grounding in the latest National Electrical Code
and the local code.
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 water pipe going into
the ground for at least ten feet and having no insulat-
ed joints, or to the metal framework of a building
which has been effectively grounded.
The National Electrical 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.
WELDING TERMINALS
The GX 300 is equipped with a toggle switch for
selecting "hot" welding terminal when in the "WELD
TERMINALS ON" position or "cold" welding terminal
when in the "REMOTELY CONTROLLED" position.
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
with a 3/4" wrench.
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.
TABLE A-1
A-5 INSTALLATION A-5
An incorrect spark arrestor may lead to damage to
the engine or adversely affect performance.
------------------------------------------------------------------------
HIGH FREQUENCY GENERATORS FOR
TIG APPLICATIONS
The K930-2 TIG Module is suitable for use with the
GX 300. The GX 300 and any high frequency generat-
ing equipment must be properly grounded. See the
K930-2 Operating Manual for completed instructions
on installation, operation, and maintenance.
REMOTE CONTROL
The GX 300 is equipped with a 3 pin and a 14 pin
Amphenol connector.
When in the CC-STICK, PIPE, and CV-WIRE modes
and when a remote control is connected to the
Amphenol, the auto-sensing circuit in the GX 300
automatically switches the OUTPUT control from con-
trol at the welder to remote control.
The 14 pin connector is used to directly connect a
wire feeder or TIG Module (K930-2) control cable. In
the CV-WIRE mode, the GX 300 auto-sensing circuit
automatically makes the GX 300 Output Control inac-
tive and the wire feeder voltage control active when
the control cable is connected to the 14 pin connector.
NOTE: When a wire feeder with a built in welding volt-
age control is connected to the 14 pin connector, do
not connect anything to the other connector.
ELECTRICAL CONNECTIONS
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 to which this engine driven welder
supplies power must be grounded to the frame
of the welder using a grounded type plug or
have double insulation.
• Do not ground the machine to a pipe that carries
explosive or combustible material.
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When this welder is mounted on a truck or trailer, its
frame must be securely connected to the metal frame
of the vehicle.
GX 300
CAUTION
WARNING
TOTAL COMBINED LENGTH OF
ELECTRODE AND WORK CABLES
Cable Length
0-100Ft. (0-30meters)
100-150 Ft. (30-46m meters)
150-200 Ft. (46-61 meters)
Cable Size for
305 Amps
100% Duty Cycle
1 / 0 AWG
2 / 0 AWG
3 / 0 AWG