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A-6
INSTALLATION
POWER-ARC 4000
A-6
Cable Installation
Install the welding cables to your POWER-ARC 4000
as follows. See Figure A.1 for the location of parts.
1. The gasoline engine must be OFF to install weld-
ing cables.
2. Remove the 1/2 - 13 flanged nuts from the output
terminals.
3. Connect the electrode holder and work cables to
the weld output terminals. You can connect
either cable to either terminal, since the POWER-
ARC 4000 provides AC weld current.
4. Tighten the flanged nuts securely.
5. Be certain that the metal piece you are welding
(the “work”) is securely connected to the work
clamp and cable.
6. Check and tighten the connections periodically.
• Loose connections will cause the output termi-
nals to overheat. The terminals may eventually
melt.
• Do not cross the welding cables at the output
terminal connection. Keep the cables isolated
and separate from one another.
Lincoln Electric offers a welding accessory kit with
the properly specified welding cables. See the
ACCESSORIES section of this manual for more infor-
mation.
MACHINE GROUNDING
Because the POWER-ARC 4000 creates
its own power from its gasoline-engine
driven generator, you do not need to
connect the machine frame to an earth
ground. However, for best protection
against electrical shock, connect a heavy gauge wire
from the ground stud located on the bottom center of
the output panel (see Figure A.1) to a suitable earth
ground such as a metal pipe driven into the ground.
Do not ground the machine to a pipe that carries
explosive or combustible material.
When the POWER-ARC 4000 is mounted
on a truck or a trailer, the machine gen-
erator ground stud MUST be securely
connected to the metal frame of the
vehicle. See Figure A.1. The ground
stud is marked with the symbol.
PLUGS AND HAND-HELD EQUIPMENT
For further protection against electric shock, any
electrical equipment connected to the generator
receptacles must use a three-blade, grounded type
plug or an Underwriter’s Laboratories (UL) approved
double insulation system with a two-blade plug.
Lincoln offers an accessory plug kit that has the right
type of plugs. See the ACCESSORIES section of this
manual for details.
Ground fault protection is needed for hand held
equipment.
Never operate this machine with damaged or defec-
tive cords. All electrical equipment must be in safe
condition.
AUXILIARY POWER RECEPTACLES
The control panel of the POWER-ARC 4000 features
two auxiliary power receptacles:
• A 20 amp, 120 volt duplex (double outlet) recepta-
cle
• A 20 amp 240 volt simplex (single outlet) recepta-
cle.
See Figure A.1.
Through these receptacles the machine can supply
up to 4,000 rated continuous watts and 4,400 surge
watts of single-phase AC power.
CAUTION
WARNING
WARNING